/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-94.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 20:21:09,561 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 20:21:09,618 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 20:21:09,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 20:21:09,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 20:21:09,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 20:21:09,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 20:21:09,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 20:21:09,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 20:21:09,643 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 20:21:09,643 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 20:21:09,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 20:21:09,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 20:21:09,645 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 20:21:09,645 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 20:21:09,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 20:21:09,646 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 20:21:09,646 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 20:21:09,646 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 20:21:09,647 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 20:21:09,647 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 20:21:09,647 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 20:21:09,648 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 20:21:09,648 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 20:21:09,652 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 20:21:09,652 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 20:21:09,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 20:21:09,653 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 20:21:09,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 20:21:09,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 20:21:09,654 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 20:21:09,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 20:21:09,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:21:09,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 20:21:09,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 20:21:09,655 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 20:21:09,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 20:21:09,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 20:21:09,656 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 20:21:09,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 20:21:09,657 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 20:21:09,660 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 20:21:09,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 20:21:09,660 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 20:21:09,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 20:21:09,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 20:21:09,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 20:21:09,907 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 20:21:09,907 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 20:21:09,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-94.i [2023-12-20 20:21:11,113 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 20:21:11,349 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 20:21:11,350 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-94.i [2023-12-20 20:21:11,369 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14d03e79c/76c5a3a59fd44f69a296775c80da806e/FLAG9fb487046 [2023-12-20 20:21:11,379 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14d03e79c/76c5a3a59fd44f69a296775c80da806e [2023-12-20 20:21:11,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 20:21:11,382 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 20:21:11,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 20:21:11,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 20:21:11,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 20:21:11,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:21:11" (1/1) ... [2023-12-20 20:21:11,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6626d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:11, skipping insertion in model container [2023-12-20 20:21:11,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:21:11" (1/1) ... [2023-12-20 20:21:11,448 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 20:21:11,568 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-500_file-94.i[916,929] [2023-12-20 20:21:11,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:21:11,793 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 20:21:11,802 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-500_file-94.i[916,929] [2023-12-20 20:21:11,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:21:11,886 INFO L206 MainTranslator]: Completed translation [2023-12-20 20:21:11,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:11 WrapperNode [2023-12-20 20:21:11,886 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 20:21:11,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 20:21:11,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 20:21:11,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 20:21:11,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:11" (1/1) ... [2023-12-20 20:21:11,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:11" (1/1) ... [2023-12-20 20:21:11,978 INFO L138 Inliner]: procedures = 26, calls = 133, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 811 [2023-12-20 20:21:11,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 20:21:11,979 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 20:21:11,979 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 20:21:11,979 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 20:21:11,993 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:11" (1/1) ... [2023-12-20 20:21:11,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:11" (1/1) ... [2023-12-20 20:21:12,003 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:11" (1/1) ... [2023-12-20 20:21:12,081 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]. [2023-12-20 20:21:12,086 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:11" (1/1) ... [2023-12-20 20:21:12,087 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:11" (1/1) ... [2023-12-20 20:21:12,120 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:11" (1/1) ... [2023-12-20 20:21:12,125 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:11" (1/1) ... [2023-12-20 20:21:12,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:11" (1/1) ... [2023-12-20 20:21:12,145 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:11" (1/1) ... [2023-12-20 20:21:12,156 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 20:21:12,157 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 20:21:12,157 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 20:21:12,157 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 20:21:12,158 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:11" (1/1) ... [2023-12-20 20:21:12,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:21:12,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:12,201 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) [2023-12-20 20:21:12,228 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 [2023-12-20 20:21:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 20:21:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 20:21:12,238 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 20:21:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 20:21:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 20:21:12,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 20:21:12,379 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 20:21:12,381 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 20:21:13,159 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 20:21:13,208 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 20:21:13,209 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 20:21:13,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:21:13 BoogieIcfgContainer [2023-12-20 20:21:13,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 20:21:13,212 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 20:21:13,212 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 20:21:13,215 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 20:21:13,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 08:21:11" (1/3) ... [2023-12-20 20:21:13,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e4b333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:21:13, skipping insertion in model container [2023-12-20 20:21:13,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:11" (2/3) ... [2023-12-20 20:21:13,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e4b333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:21:13, skipping insertion in model container [2023-12-20 20:21:13,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:21:13" (3/3) ... [2023-12-20 20:21:13,218 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-94.i [2023-12-20 20:21:13,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 20:21:13,234 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 20:21:13,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 20:21:13,307 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;@244d03d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 20:21:13,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 20:21:13,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 321 states, 198 states have (on average 1.5505050505050506) internal successors, (307), 199 states have internal predecessors, (307), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-20 20:21:13,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2023-12-20 20:21:13,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:13,352 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:13,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:13,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:13,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1865648465, now seen corresponding path program 1 times [2023-12-20 20:21:13,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:13,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437134615] [2023-12-20 20:21:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:13,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:13,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:13,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437134615] [2023-12-20 20:21:13,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 20:21:13,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027907830] [2023-12-20 20:21:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:13,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:13,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:13,783 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) [2023-12-20 20:21:13,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 20:21:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:14,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 20:21:14,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 28322 trivial. 0 not checked. [2023-12-20 20:21:14,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:21:14,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027907830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:21:14,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:21:14,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:21:14,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631383334] [2023-12-20 20:21:14,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:21:14,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 20:21:14,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:14,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 20:21:14,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 20:21:14,486 INFO L87 Difference]: Start difference. First operand has 321 states, 198 states have (on average 1.5505050505050506) internal successors, (307), 199 states have internal predecessors, (307), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) Second operand has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-20 20:21:14,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:14,579 INFO L93 Difference]: Finished difference Result 639 states and 1212 transitions. [2023-12-20 20:21:14,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 20:21:14,582 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 2 states have call successors, (120) Word has length 760 [2023-12-20 20:21:14,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:14,592 INFO L225 Difference]: With dead ends: 639 [2023-12-20 20:21:14,592 INFO L226 Difference]: Without dead ends: 319 [2023-12-20 20:21:14,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 20:21:14,602 INFO L413 NwaCegarLoop]: 538 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, 538 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 [2023-12-20 20:21:14,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 538 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:21:14,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-12-20 20:21:14,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2023-12-20 20:21:14,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 197 states have (on average 1.5279187817258884) internal successors, (301), 197 states have internal predecessors, (301), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-20 20:21:14,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 541 transitions. [2023-12-20 20:21:14,714 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 541 transitions. Word has length 760 [2023-12-20 20:21:14,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:14,715 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 541 transitions. [2023-12-20 20:21:14,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-20 20:21:14,716 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 541 transitions. [2023-12-20 20:21:14,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2023-12-20 20:21:14,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:14,735 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:14,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 20:21:14,944 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 [2023-12-20 20:21:14,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:14,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:14,945 INFO L85 PathProgramCache]: Analyzing trace with hash -981734411, now seen corresponding path program 1 times [2023-12-20 20:21:14,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:14,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76275806] [2023-12-20 20:21:14,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:14,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:15,123 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:15,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548460202] [2023-12-20 20:21:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:15,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:15,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:15,137 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) [2023-12-20 20:21:15,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 20:21:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:15,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 20:21:15,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:15,757 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 20:21:15,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:21:15,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:15,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76275806] [2023-12-20 20:21:15,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:15,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548460202] [2023-12-20 20:21:15,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548460202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:21:15,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:21:15,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 20:21:15,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391394232] [2023-12-20 20:21:15,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:21:15,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 20:21:15,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:15,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 20:21:15,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:21:15,765 INFO L87 Difference]: Start difference. First operand 319 states and 541 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:16,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:16,399 INFO L93 Difference]: Finished difference Result 1542 states and 2621 transitions. [2023-12-20 20:21:16,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 20:21:16,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 760 [2023-12-20 20:21:16,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:16,410 INFO L225 Difference]: With dead ends: 1542 [2023-12-20 20:21:16,410 INFO L226 Difference]: Without dead ends: 1224 [2023-12-20 20:21:16,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:21:16,413 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 1504 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:16,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 2744 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 20:21:16,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-12-20 20:21:16,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 976. [2023-12-20 20:21:16,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 657 states have (on average 1.5753424657534247) internal successors, (1035), 659 states have internal predecessors, (1035), 314 states have call successors, (314), 4 states have call predecessors, (314), 4 states have return successors, (314), 312 states have call predecessors, (314), 314 states have call successors, (314) [2023-12-20 20:21:16,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1663 transitions. [2023-12-20 20:21:16,580 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1663 transitions. Word has length 760 [2023-12-20 20:21:16,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:16,582 INFO L495 AbstractCegarLoop]: Abstraction has 976 states and 1663 transitions. [2023-12-20 20:21:16,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:16,582 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1663 transitions. [2023-12-20 20:21:16,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2023-12-20 20:21:16,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:16,590 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:16,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 20:21:16,798 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 [2023-12-20 20:21:16,799 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:16,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:16,799 INFO L85 PathProgramCache]: Analyzing trace with hash -607481159, now seen corresponding path program 1 times [2023-12-20 20:21:16,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:16,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085616832] [2023-12-20 20:21:16,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:16,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:16,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:16,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030753511] [2023-12-20 20:21:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:16,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:16,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:16,916 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) [2023-12-20 20:21:16,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 20:21:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:17,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 20:21:17,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:17,551 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 20:21:17,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:21:17,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:17,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085616832] [2023-12-20 20:21:17,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:17,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030753511] [2023-12-20 20:21:17,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030753511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:21:17,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:21:17,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 20:21:17,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121782288] [2023-12-20 20:21:17,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:21:17,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 20:21:17,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:17,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 20:21:17,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:21:17,555 INFO L87 Difference]: Start difference. First operand 976 states and 1663 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:18,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:18,105 INFO L93 Difference]: Finished difference Result 2088 states and 3545 transitions. [2023-12-20 20:21:18,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 20:21:18,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 760 [2023-12-20 20:21:18,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:18,118 INFO L225 Difference]: With dead ends: 2088 [2023-12-20 20:21:18,118 INFO L226 Difference]: Without dead ends: 1113 [2023-12-20 20:21:18,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 756 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:21:18,124 INFO L413 NwaCegarLoop]: 980 mSDtfsCounter, 1239 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:18,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 2084 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 20:21:18,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2023-12-20 20:21:18,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 989. [2023-12-20 20:21:18,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 670 states have (on average 1.5701492537313433) internal successors, (1052), 672 states have internal predecessors, (1052), 314 states have call successors, (314), 4 states have call predecessors, (314), 4 states have return successors, (314), 312 states have call predecessors, (314), 314 states have call successors, (314) [2023-12-20 20:21:18,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1680 transitions. [2023-12-20 20:21:18,254 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1680 transitions. Word has length 760 [2023-12-20 20:21:18,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:18,255 INFO L495 AbstractCegarLoop]: Abstraction has 989 states and 1680 transitions. [2023-12-20 20:21:18,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:18,264 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1680 transitions. [2023-12-20 20:21:18,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2023-12-20 20:21:18,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:18,271 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:18,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 20:21:18,480 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 [2023-12-20 20:21:18,481 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:18,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:18,481 INFO L85 PathProgramCache]: Analyzing trace with hash -43727887, now seen corresponding path program 1 times [2023-12-20 20:21:18,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:18,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468406888] [2023-12-20 20:21:18,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:18,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:18,559 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:18,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1721758634] [2023-12-20 20:21:18,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:18,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:18,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:18,561 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) [2023-12-20 20:21:18,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 20:21:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:18,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:21:18,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 20:21:19,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:21:19,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:19,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468406888] [2023-12-20 20:21:19,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:19,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721758634] [2023-12-20 20:21:19,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721758634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:21:19,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:21:19,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:21:19,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920852031] [2023-12-20 20:21:19,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:21:19,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:21:19,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:21:19,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:19,041 INFO L87 Difference]: Start difference. First operand 989 states and 1680 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:19,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:19,171 INFO L93 Difference]: Finished difference Result 2684 states and 4575 transitions. [2023-12-20 20:21:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:21:19,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 761 [2023-12-20 20:21:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:19,182 INFO L225 Difference]: With dead ends: 2684 [2023-12-20 20:21:19,182 INFO L226 Difference]: Without dead ends: 1696 [2023-12-20 20:21:19,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:19,186 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 288 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:19,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1151 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 20:21:19,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2023-12-20 20:21:19,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1692. [2023-12-20 20:21:19,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1217 states have (on average 1.5981922760887428) internal successors, (1945), 1223 states have internal predecessors, (1945), 466 states have call successors, (466), 8 states have call predecessors, (466), 8 states have return successors, (466), 460 states have call predecessors, (466), 466 states have call successors, (466) [2023-12-20 20:21:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2877 transitions. [2023-12-20 20:21:19,343 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2877 transitions. Word has length 761 [2023-12-20 20:21:19,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:19,344 INFO L495 AbstractCegarLoop]: Abstraction has 1692 states and 2877 transitions. [2023-12-20 20:21:19,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:19,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2877 transitions. [2023-12-20 20:21:19,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2023-12-20 20:21:19,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:19,352 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:19,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 20:21:19,560 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 [2023-12-20 20:21:19,561 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:19,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:19,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1573390741, now seen corresponding path program 1 times [2023-12-20 20:21:19,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:19,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348875233] [2023-12-20 20:21:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:19,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:19,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:19,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613620085] [2023-12-20 20:21:19,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:19,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:19,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:19,631 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) [2023-12-20 20:21:19,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 20:21:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:20,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:21:20,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 20:21:20,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:21:20,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:20,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348875233] [2023-12-20 20:21:20,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:20,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613620085] [2023-12-20 20:21:20,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613620085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:21:20,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:21:20,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:21:20,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352028614] [2023-12-20 20:21:20,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:21:20,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:21:20,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:20,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:21:20,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:20,137 INFO L87 Difference]: Start difference. First operand 1692 states and 2877 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:20,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:20,306 INFO L93 Difference]: Finished difference Result 4615 states and 7836 transitions. [2023-12-20 20:21:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:21:20,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 762 [2023-12-20 20:21:20,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:20,323 INFO L225 Difference]: With dead ends: 4615 [2023-12-20 20:21:20,323 INFO L226 Difference]: Without dead ends: 2924 [2023-12-20 20:21:20,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:20,330 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 337 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:20,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1266 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:21:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2023-12-20 20:21:20,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 2920. [2023-12-20 20:21:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2047 states have (on average 1.5676599902296042) internal successors, (3209), 2061 states have internal predecessors, (3209), 856 states have call successors, (856), 16 states have call predecessors, (856), 16 states have return successors, (856), 842 states have call predecessors, (856), 856 states have call successors, (856) [2023-12-20 20:21:20,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4921 transitions. [2023-12-20 20:21:20,615 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4921 transitions. Word has length 762 [2023-12-20 20:21:20,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:20,616 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4921 transitions. [2023-12-20 20:21:20,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:20,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4921 transitions. [2023-12-20 20:21:20,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-12-20 20:21:20,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:20,625 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:20,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 20:21:20,831 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 [2023-12-20 20:21:20,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:20,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:20,833 INFO L85 PathProgramCache]: Analyzing trace with hash -202791277, now seen corresponding path program 1 times [2023-12-20 20:21:20,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:20,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024771390] [2023-12-20 20:21:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:20,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:20,903 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:20,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469326536] [2023-12-20 20:21:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:20,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:20,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:20,905 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) [2023-12-20 20:21:20,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 20:21:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:21,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:21:21,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 20:21:21,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:21:21,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:21,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024771390] [2023-12-20 20:21:21,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:21,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469326536] [2023-12-20 20:21:21,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469326536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:21:21,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:21:21,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:21:21,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37775143] [2023-12-20 20:21:21,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:21:21,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:21:21,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:21,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:21:21,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:21,405 INFO L87 Difference]: Start difference. First operand 2920 states and 4921 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:21,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:21,690 INFO L93 Difference]: Finished difference Result 8259 states and 13885 transitions. [2023-12-20 20:21:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:21:21,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 763 [2023-12-20 20:21:21,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:21,718 INFO L225 Difference]: With dead ends: 8259 [2023-12-20 20:21:21,719 INFO L226 Difference]: Without dead ends: 5340 [2023-12-20 20:21:21,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:21,729 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 338 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:21,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 1061 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:21:21,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5340 states. [2023-12-20 20:21:22,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5340 to 5334. [2023-12-20 20:21:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5334 states, 3673 states have (on average 1.5475088483528452) internal successors, (5684), 3703 states have internal predecessors, (5684), 1628 states have call successors, (1628), 32 states have call predecessors, (1628), 32 states have return successors, (1628), 1598 states have call predecessors, (1628), 1628 states have call successors, (1628) [2023-12-20 20:21:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5334 states to 5334 states and 8940 transitions. [2023-12-20 20:21:22,214 INFO L78 Accepts]: Start accepts. Automaton has 5334 states and 8940 transitions. Word has length 763 [2023-12-20 20:21:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:22,215 INFO L495 AbstractCegarLoop]: Abstraction has 5334 states and 8940 transitions. [2023-12-20 20:21:22,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:22,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5334 states and 8940 transitions. [2023-12-20 20:21:22,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-12-20 20:21:22,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:22,226 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:22,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 20:21:22,448 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 [2023-12-20 20:21:22,449 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:22,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:22,449 INFO L85 PathProgramCache]: Analyzing trace with hash 230937809, now seen corresponding path program 1 times [2023-12-20 20:21:22,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:22,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767348817] [2023-12-20 20:21:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:22,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:22,517 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:22,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526911974] [2023-12-20 20:21:22,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:22,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:22,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:22,519 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) [2023-12-20 20:21:22,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 20:21:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:23,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:21:23,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 20:21:23,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:21:23,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:23,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767348817] [2023-12-20 20:21:23,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:23,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526911974] [2023-12-20 20:21:23,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526911974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:21:23,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:21:23,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:21:23,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536796420] [2023-12-20 20:21:23,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:21:23,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:21:23,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:21:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:23,080 INFO L87 Difference]: Start difference. First operand 5334 states and 8940 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:23,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:23,589 INFO L93 Difference]: Finished difference Result 16000 states and 26818 transitions. [2023-12-20 20:21:23,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:21:23,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 763 [2023-12-20 20:21:23,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:23,664 INFO L225 Difference]: With dead ends: 16000 [2023-12-20 20:21:23,664 INFO L226 Difference]: Without dead ends: 10667 [2023-12-20 20:21:23,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:23,690 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 537 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:23,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1519 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:21:23,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10667 states. [2023-12-20 20:21:24,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10667 to 10665. [2023-12-20 20:21:24,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10665 states, 7344 states have (on average 1.5433006535947713) internal successors, (11334), 7404 states have internal predecessors, (11334), 3256 states have call successors, (3256), 64 states have call predecessors, (3256), 64 states have return successors, (3256), 3196 states have call predecessors, (3256), 3256 states have call successors, (3256) [2023-12-20 20:21:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10665 states to 10665 states and 17846 transitions. [2023-12-20 20:21:24,706 INFO L78 Accepts]: Start accepts. Automaton has 10665 states and 17846 transitions. Word has length 763 [2023-12-20 20:21:24,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:24,707 INFO L495 AbstractCegarLoop]: Abstraction has 10665 states and 17846 transitions. [2023-12-20 20:21:24,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:24,707 INFO L276 IsEmpty]: Start isEmpty. Operand 10665 states and 17846 transitions. [2023-12-20 20:21:24,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-12-20 20:21:24,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:24,723 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:24,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 20:21:24,934 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 [2023-12-20 20:21:24,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:24,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:24,935 INFO L85 PathProgramCache]: Analyzing trace with hash 479084303, now seen corresponding path program 1 times [2023-12-20 20:21:24,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:24,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329760161] [2023-12-20 20:21:24,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:24,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:25,018 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:25,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301080972] [2023-12-20 20:21:25,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:25,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:25,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:25,025 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) [2023-12-20 20:21:25,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 20:21:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:25,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:21:25,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 20:21:25,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:21:25,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:25,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329760161] [2023-12-20 20:21:25,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:25,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301080972] [2023-12-20 20:21:25,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301080972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:21:25,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:21:25,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:21:25,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099675166] [2023-12-20 20:21:25,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:21:25,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:21:25,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:25,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:21:25,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:25,569 INFO L87 Difference]: Start difference. First operand 10665 states and 17846 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:26,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:26,673 INFO L93 Difference]: Finished difference Result 31993 states and 53536 transitions. [2023-12-20 20:21:26,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:21:26,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 763 [2023-12-20 20:21:26,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:26,746 INFO L225 Difference]: With dead ends: 31993 [2023-12-20 20:21:26,747 INFO L226 Difference]: Without dead ends: 21329 [2023-12-20 20:21:26,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:26,792 INFO L413 NwaCegarLoop]: 1031 mSDtfsCounter, 532 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:26,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1563 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:21:26,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21329 states. [2023-12-20 20:21:28,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21329 to 21263. [2023-12-20 20:21:28,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21263 states, 14622 states have (on average 1.5326220763233485) internal successors, (22410), 14742 states have internal predecessors, (22410), 6512 states have call successors, (6512), 128 states have call predecessors, (6512), 128 states have return successors, (6512), 6392 states have call predecessors, (6512), 6512 states have call successors, (6512) [2023-12-20 20:21:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21263 states to 21263 states and 35434 transitions. [2023-12-20 20:21:28,770 INFO L78 Accepts]: Start accepts. Automaton has 21263 states and 35434 transitions. Word has length 763 [2023-12-20 20:21:28,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:28,772 INFO L495 AbstractCegarLoop]: Abstraction has 21263 states and 35434 transitions. [2023-12-20 20:21:28,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:28,772 INFO L276 IsEmpty]: Start isEmpty. Operand 21263 states and 35434 transitions. [2023-12-20 20:21:28,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-12-20 20:21:28,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:28,788 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:28,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 20:21:29,001 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 [2023-12-20 20:21:29,001 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:29,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:29,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1821738287, now seen corresponding path program 1 times [2023-12-20 20:21:29,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:29,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875817393] [2023-12-20 20:21:29,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:29,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:29,068 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:29,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589322174] [2023-12-20 20:21:29,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:29,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:29,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:29,070 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) [2023-12-20 20:21:29,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 20:21:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:29,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 20:21:29,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 20:21:31,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:21:31,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:31,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875817393] [2023-12-20 20:21:31,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:31,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589322174] [2023-12-20 20:21:31,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589322174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:21:31,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:21:31,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 20:21:31,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304501438] [2023-12-20 20:21:31,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:21:31,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 20:21:31,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:31,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 20:21:31,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:21:31,411 INFO L87 Difference]: Start difference. First operand 21263 states and 35434 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:33,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:33,935 INFO L93 Difference]: Finished difference Result 61403 states and 102166 transitions. [2023-12-20 20:21:33,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 20:21:33,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 763 [2023-12-20 20:21:33,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:34,088 INFO L225 Difference]: With dead ends: 61403 [2023-12-20 20:21:34,088 INFO L226 Difference]: Without dead ends: 39989 [2023-12-20 20:21:34,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:21:34,162 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 1567 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:34,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 1698 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 20:21:34,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39989 states. [2023-12-20 20:21:37,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39989 to 39983. [2023-12-20 20:21:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39983 states, 27518 states have (on average 1.5225670470237662) internal successors, (41898), 27718 states have internal predecessors, (41898), 12176 states have call successors, (12176), 288 states have call predecessors, (12176), 288 states have return successors, (12176), 11976 states have call predecessors, (12176), 12176 states have call successors, (12176) [2023-12-20 20:21:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39983 states to 39983 states and 66250 transitions. [2023-12-20 20:21:37,594 INFO L78 Accepts]: Start accepts. Automaton has 39983 states and 66250 transitions. Word has length 763 [2023-12-20 20:21:37,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:37,596 INFO L495 AbstractCegarLoop]: Abstraction has 39983 states and 66250 transitions. [2023-12-20 20:21:37,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:37,596 INFO L276 IsEmpty]: Start isEmpty. Operand 39983 states and 66250 transitions. [2023-12-20 20:21:37,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-12-20 20:21:37,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:37,618 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:37,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 20:21:37,827 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 [2023-12-20 20:21:37,828 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:37,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:37,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1399036461, now seen corresponding path program 1 times [2023-12-20 20:21:37,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:37,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550019780] [2023-12-20 20:21:37,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:37,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:37,888 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:37,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930319707] [2023-12-20 20:21:37,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:37,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:37,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:37,889 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) [2023-12-20 20:21:37,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 20:21:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:38,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 20:21:38,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 20:21:40,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:21:40,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:40,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550019780] [2023-12-20 20:21:40,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:40,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930319707] [2023-12-20 20:21:40,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930319707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:21:40,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:21:40,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 20:21:40,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077099936] [2023-12-20 20:21:40,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:21:40,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 20:21:40,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:40,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 20:21:40,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:21:40,273 INFO L87 Difference]: Start difference. First operand 39983 states and 66250 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:43,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:43,291 INFO L93 Difference]: Finished difference Result 106167 states and 175996 transitions. [2023-12-20 20:21:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 20:21:43,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 763 [2023-12-20 20:21:43,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:43,520 INFO L225 Difference]: With dead ends: 106167 [2023-12-20 20:21:43,520 INFO L226 Difference]: Without dead ends: 66185 [2023-12-20 20:21:43,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:21:43,620 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 1445 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:43,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 1702 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 20:21:43,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66185 states. [2023-12-20 20:21:48,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66185 to 66035. [2023-12-20 20:21:48,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66035 states, 45202 states have (on average 1.5150657050572984) internal successors, (68484), 45530 states have internal predecessors, (68484), 20336 states have call successors, (20336), 496 states have call predecessors, (20336), 496 states have return successors, (20336), 20008 states have call predecessors, (20336), 20336 states have call successors, (20336) [2023-12-20 20:21:48,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66035 states to 66035 states and 109156 transitions. [2023-12-20 20:21:48,903 INFO L78 Accepts]: Start accepts. Automaton has 66035 states and 109156 transitions. Word has length 763 [2023-12-20 20:21:48,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:48,904 INFO L495 AbstractCegarLoop]: Abstraction has 66035 states and 109156 transitions. [2023-12-20 20:21:48,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:21:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand 66035 states and 109156 transitions. [2023-12-20 20:21:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-12-20 20:21:48,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:48,933 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:48,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 20:21:49,142 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 [2023-12-20 20:21:49,143 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:49,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:49,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1120640847, now seen corresponding path program 1 times [2023-12-20 20:21:49,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:49,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480183088] [2023-12-20 20:21:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:49,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:49,210 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:49,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529418951] [2023-12-20 20:21:49,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:49,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:49,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:49,212 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) [2023-12-20 20:21:49,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 20:21:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:49,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:21:49,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 14093 proven. 204 refuted. 0 times theorem prover too weak. 14263 trivial. 0 not checked. [2023-12-20 20:21:50,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:21:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 153 proven. 204 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-20 20:21:50,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:50,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480183088] [2023-12-20 20:21:50,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:50,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529418951] [2023-12-20 20:21:50,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529418951] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:21:50,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:21:50,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-20 20:21:50,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335857899] [2023-12-20 20:21:50,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:21:50,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 20:21:50,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:50,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 20:21:50,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 20:21:50,807 INFO L87 Difference]: Start difference. First operand 66035 states and 109156 transitions. Second operand has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 3 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 3 states have call predecessors, (189), 3 states have call successors, (189) [2023-12-20 20:21:54,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:54,641 INFO L93 Difference]: Finished difference Result 133461 states and 219591 transitions. [2023-12-20 20:21:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 20:21:54,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 3 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 3 states have call predecessors, (189), 3 states have call successors, (189) Word has length 763 [2023-12-20 20:21:54,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:54,876 INFO L225 Difference]: With dead ends: 133461 [2023-12-20 20:21:54,877 INFO L226 Difference]: Without dead ends: 67427 [2023-12-20 20:21:55,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1528 GetRequests, 1518 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-20 20:21:55,030 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 488 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:55,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 990 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 20:21:55,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67427 states. [2023-12-20 20:21:59,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67427 to 66483. [2023-12-20 20:21:59,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66483 states, 45538 states have (on average 1.5016030567877376) internal successors, (68380), 45866 states have internal predecessors, (68380), 20336 states have call successors, (20336), 608 states have call predecessors, (20336), 608 states have return successors, (20336), 20008 states have call predecessors, (20336), 20336 states have call successors, (20336) [2023-12-20 20:21:59,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66483 states to 66483 states and 109052 transitions. [2023-12-20 20:21:59,862 INFO L78 Accepts]: Start accepts. Automaton has 66483 states and 109052 transitions. Word has length 763 [2023-12-20 20:21:59,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:59,867 INFO L495 AbstractCegarLoop]: Abstraction has 66483 states and 109052 transitions. [2023-12-20 20:21:59,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 3 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 3 states have call predecessors, (189), 3 states have call successors, (189) [2023-12-20 20:21:59,867 INFO L276 IsEmpty]: Start isEmpty. Operand 66483 states and 109052 transitions. [2023-12-20 20:21:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-12-20 20:21:59,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:59,896 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:59,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 20:22:00,108 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 [2023-12-20 20:22:00,109 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:00,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:00,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1564541521, now seen corresponding path program 1 times [2023-12-20 20:22:00,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:00,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833677365] [2023-12-20 20:22:00,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:00,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:00,184 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:00,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046394026] [2023-12-20 20:22:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:00,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:00,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:00,187 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) [2023-12-20 20:22:00,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 20:22:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:00,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:22:00,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:00,999 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 12759 proven. 117 refuted. 0 times theorem prover too weak. 15684 trivial. 0 not checked. [2023-12-20 20:22:00,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:22:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 240 proven. 117 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-20 20:22:01,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:01,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833677365] [2023-12-20 20:22:01,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:01,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046394026] [2023-12-20 20:22:01,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046394026] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:22:01,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:22:01,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 20:22:01,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028075448] [2023-12-20 20:22:01,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:22:01,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:22:01,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:01,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:22:01,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:22:01,585 INFO L87 Difference]: Start difference. First operand 66483 states and 109052 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (160), 2 states have call predecessors, (160), 2 states have call successors, (160) [2023-12-20 20:22:03,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:03,639 INFO L93 Difference]: Finished difference Result 88571 states and 145436 transitions. [2023-12-20 20:22:03,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 20:22:03,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (160), 2 states have call predecessors, (160), 2 states have call successors, (160) Word has length 763 [2023-12-20 20:22:03,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:03,697 INFO L225 Difference]: With dead ends: 88571 [2023-12-20 20:22:03,698 INFO L226 Difference]: Without dead ends: 22089 [2023-12-20 20:22:03,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1528 GetRequests, 1518 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 20:22:03,888 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 320 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:03,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1278 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 20:22:03,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22089 states. [2023-12-20 20:22:05,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22089 to 21321. [2023-12-20 20:22:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21321 states, 14747 states have (on average 1.4969146267037363) internal successors, (22075), 14844 states have internal predecessors, (22075), 6376 states have call successors, (6376), 197 states have call predecessors, (6376), 197 states have return successors, (6376), 6279 states have call predecessors, (6376), 6376 states have call successors, (6376) [2023-12-20 20:22:05,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21321 states to 21321 states and 34827 transitions. [2023-12-20 20:22:05,768 INFO L78 Accepts]: Start accepts. Automaton has 21321 states and 34827 transitions. Word has length 763 [2023-12-20 20:22:05,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:22:05,769 INFO L495 AbstractCegarLoop]: Abstraction has 21321 states and 34827 transitions. [2023-12-20 20:22:05,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (160), 2 states have call predecessors, (160), 2 states have call successors, (160) [2023-12-20 20:22:05,769 INFO L276 IsEmpty]: Start isEmpty. Operand 21321 states and 34827 transitions. [2023-12-20 20:22:05,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2023-12-20 20:22:05,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:22:05,781 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:22:05,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 20:22:05,993 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 [2023-12-20 20:22:05,993 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:05,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:05,994 INFO L85 PathProgramCache]: Analyzing trace with hash 901512896, now seen corresponding path program 1 times [2023-12-20 20:22:05,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:05,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888454882] [2023-12-20 20:22:05,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:05,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:06,058 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:06,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311682224] [2023-12-20 20:22:06,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:06,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:06,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:06,060 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) [2023-12-20 20:22:06,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 20:22:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:06,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:22:06,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 20:22:06,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:22:06,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:06,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888454882] [2023-12-20 20:22:06,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:06,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311682224] [2023-12-20 20:22:06,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311682224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:22:06,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:22:06,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:22:06,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31505959] [2023-12-20 20:22:06,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:22:06,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:22:06,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:06,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:22:06,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:22:06,599 INFO L87 Difference]: Start difference. First operand 21321 states and 34827 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:22:08,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:08,294 INFO L93 Difference]: Finished difference Result 63405 states and 103625 transitions. [2023-12-20 20:22:08,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:22:08,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 765 [2023-12-20 20:22:08,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:08,390 INFO L225 Difference]: With dead ends: 63405 [2023-12-20 20:22:08,390 INFO L226 Difference]: Without dead ends: 42295 [2023-12-20 20:22:08,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:22:08,436 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 524 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:08,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 1060 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:22:08,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42295 states. [2023-12-20 20:22:11,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42295 to 42293. [2023-12-20 20:22:11,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42293 states, 29271 states have (on average 1.489904683816747) internal successors, (43611), 29464 states have internal predecessors, (43611), 12632 states have call successors, (12632), 389 states have call predecessors, (12632), 389 states have return successors, (12632), 12439 states have call predecessors, (12632), 12632 states have call successors, (12632) [2023-12-20 20:22:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42293 states to 42293 states and 68875 transitions. [2023-12-20 20:22:11,878 INFO L78 Accepts]: Start accepts. Automaton has 42293 states and 68875 transitions. Word has length 765 [2023-12-20 20:22:11,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:22:11,879 INFO L495 AbstractCegarLoop]: Abstraction has 42293 states and 68875 transitions. [2023-12-20 20:22:11,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:22:11,879 INFO L276 IsEmpty]: Start isEmpty. Operand 42293 states and 68875 transitions. [2023-12-20 20:22:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2023-12-20 20:22:11,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:22:11,892 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:22:11,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 20:22:12,093 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 [2023-12-20 20:22:12,093 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:12,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:12,094 INFO L85 PathProgramCache]: Analyzing trace with hash 4119618, now seen corresponding path program 1 times [2023-12-20 20:22:12,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:12,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432378445] [2023-12-20 20:22:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:12,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:12,151 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:12,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740789445] [2023-12-20 20:22:12,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:12,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:12,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:12,152 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) [2023-12-20 20:22:12,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 20:22:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:12,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:22:12,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 12419 proven. 111 refuted. 0 times theorem prover too weak. 16030 trivial. 0 not checked. [2023-12-20 20:22:12,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:22:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 246 proven. 111 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-20 20:22:13,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:13,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432378445] [2023-12-20 20:22:13,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:13,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740789445] [2023-12-20 20:22:13,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740789445] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:22:13,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:22:13,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 20:22:13,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352202215] [2023-12-20 20:22:13,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:22:13,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:22:13,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:13,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:22:13,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:22:13,282 INFO L87 Difference]: Start difference. First operand 42293 states and 68875 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 2 states have call predecessors, (158), 2 states have call successors, (158) [2023-12-20 20:22:15,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:15,085 INFO L93 Difference]: Finished difference Result 67021 states and 109413 transitions. [2023-12-20 20:22:15,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 20:22:15,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 2 states have call predecessors, (158), 2 states have call successors, (158) Word has length 765 [2023-12-20 20:22:15,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:15,136 INFO L225 Difference]: With dead ends: 67021 [2023-12-20 20:22:15,136 INFO L226 Difference]: Without dead ends: 24939 [2023-12-20 20:22:15,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1532 GetRequests, 1522 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 20:22:15,203 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 551 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:15,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 949 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 20:22:15,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24939 states. [2023-12-20 20:22:17,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24939 to 24677. [2023-12-20 20:22:17,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24677 states, 17462 states have (on average 1.4968503035162066) internal successors, (26138), 17543 states have internal predecessors, (26138), 6984 states have call successors, (6984), 230 states have call predecessors, (6984), 230 states have return successors, (6984), 6903 states have call predecessors, (6984), 6984 states have call successors, (6984) [2023-12-20 20:22:17,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24677 states to 24677 states and 40106 transitions. [2023-12-20 20:22:17,335 INFO L78 Accepts]: Start accepts. Automaton has 24677 states and 40106 transitions. Word has length 765 [2023-12-20 20:22:17,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:22:17,336 INFO L495 AbstractCegarLoop]: Abstraction has 24677 states and 40106 transitions. [2023-12-20 20:22:17,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 2 states have call predecessors, (158), 2 states have call successors, (158) [2023-12-20 20:22:17,336 INFO L276 IsEmpty]: Start isEmpty. Operand 24677 states and 40106 transitions. [2023-12-20 20:22:17,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2023-12-20 20:22:17,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:22:17,349 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:22:17,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 20:22:17,558 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 [2023-12-20 20:22:17,558 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:17,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash -694534718, now seen corresponding path program 1 times [2023-12-20 20:22:17,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:17,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924721267] [2023-12-20 20:22:17,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:17,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:17,621 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:17,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951588391] [2023-12-20 20:22:17,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:17,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:17,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:17,623 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) [2023-12-20 20:22:17,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 20:22:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:18,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 20:22:18,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 20:22:18,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:22:18,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:18,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924721267] [2023-12-20 20:22:18,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:18,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951588391] [2023-12-20 20:22:18,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951588391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:22:18,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:22:18,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 20:22:18,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189489992] [2023-12-20 20:22:18,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:22:18,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:22:18,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:22:18,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:22:18,871 INFO L87 Difference]: Start difference. First operand 24677 states and 40106 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 6 states have internal predecessors, (168), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:22:22,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:22,367 INFO L93 Difference]: Finished difference Result 86659 states and 141073 transitions. [2023-12-20 20:22:22,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 20:22:22,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 6 states have internal predecessors, (168), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 765 [2023-12-20 20:22:22,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:22,529 INFO L225 Difference]: With dead ends: 86659 [2023-12-20 20:22:22,529 INFO L226 Difference]: Without dead ends: 62197 [2023-12-20 20:22:22,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-20 20:22:22,591 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 2567 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2567 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:22,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2567 Valid, 3181 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 20:22:22,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62197 states. [2023-12-20 20:22:27,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62197 to 44113. [2023-12-20 20:22:27,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44113 states, 28734 states have (on average 1.4305700563792023) internal successors, (41106), 28867 states have internal predecessors, (41106), 14796 states have call successors, (14796), 582 states have call predecessors, (14796), 582 states have return successors, (14796), 14663 states have call predecessors, (14796), 14796 states have call successors, (14796) [2023-12-20 20:22:27,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44113 states to 44113 states and 70698 transitions. [2023-12-20 20:22:27,674 INFO L78 Accepts]: Start accepts. Automaton has 44113 states and 70698 transitions. Word has length 765 [2023-12-20 20:22:27,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:22:27,675 INFO L495 AbstractCegarLoop]: Abstraction has 44113 states and 70698 transitions. [2023-12-20 20:22:27,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 6 states have internal predecessors, (168), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:22:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 44113 states and 70698 transitions. [2023-12-20 20:22:27,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2023-12-20 20:22:27,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:22:27,689 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:22:27,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 20:22:27,889 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 [2023-12-20 20:22:27,890 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:27,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1911488836, now seen corresponding path program 1 times [2023-12-20 20:22:27,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:27,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408420394] [2023-12-20 20:22:27,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:27,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:27,945 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:27,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940322929] [2023-12-20 20:22:27,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:27,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:27,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:27,946 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) [2023-12-20 20:22:27,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 20:22:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:28,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 20:22:28,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:29,290 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 20:22:29,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:22:29,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:29,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408420394] [2023-12-20 20:22:29,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:29,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940322929] [2023-12-20 20:22:29,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940322929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:22:29,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:22:29,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 20:22:29,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56998687] [2023-12-20 20:22:29,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:22:29,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 20:22:29,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:29,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 20:22:29,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 20:22:29,293 INFO L87 Difference]: Start difference. First operand 44113 states and 70698 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:22:32,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:32,953 INFO L93 Difference]: Finished difference Result 110591 states and 177281 transitions. [2023-12-20 20:22:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 20:22:32,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 765 [2023-12-20 20:22:32,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:33,124 INFO L225 Difference]: With dead ends: 110591 [2023-12-20 20:22:33,124 INFO L226 Difference]: Without dead ends: 66693 [2023-12-20 20:22:33,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 20:22:33,210 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 1165 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:33,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 1092 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 20:22:33,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66693 states. [2023-12-20 20:22:39,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66693 to 65971. [2023-12-20 20:22:39,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65971 states, 42966 states have (on average 1.4245915374947633) internal successors, (61209), 43165 states have internal predecessors, (61209), 22134 states have call successors, (22134), 870 states have call predecessors, (22134), 870 states have return successors, (22134), 21935 states have call predecessors, (22134), 22134 states have call successors, (22134) [2023-12-20 20:22:40,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65971 states to 65971 states and 105477 transitions. [2023-12-20 20:22:40,012 INFO L78 Accepts]: Start accepts. Automaton has 65971 states and 105477 transitions. Word has length 765 [2023-12-20 20:22:40,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:22:40,014 INFO L495 AbstractCegarLoop]: Abstraction has 65971 states and 105477 transitions. [2023-12-20 20:22:40,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:22:40,014 INFO L276 IsEmpty]: Start isEmpty. Operand 65971 states and 105477 transitions. [2023-12-20 20:22:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2023-12-20 20:22:40,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:22:40,026 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:22:40,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-20 20:22:40,226 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 [2023-12-20 20:22:40,227 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:40,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:40,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1000872147, now seen corresponding path program 1 times [2023-12-20 20:22:40,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:40,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413875992] [2023-12-20 20:22:40,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:40,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:40,290 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:40,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142796577] [2023-12-20 20:22:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:40,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:40,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:40,292 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) [2023-12-20 20:22:40,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 20:22:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:40,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:22:40,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 10239 proven. 81 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-20 20:22:41,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:22:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 276 proven. 81 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-20 20:22:41,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:41,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413875992] [2023-12-20 20:22:41,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:41,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142796577] [2023-12-20 20:22:41,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142796577] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:22:41,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:22:41,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 20:22:41,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449899884] [2023-12-20 20:22:41,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:22:41,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:22:41,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:41,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:22:41,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:22:41,417 INFO L87 Difference]: Start difference. First operand 65971 states and 105477 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-12-20 20:22:45,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:45,794 INFO L93 Difference]: Finished difference Result 133467 states and 212220 transitions. [2023-12-20 20:22:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 20:22:45,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) Word has length 766 [2023-12-20 20:22:45,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:45,990 INFO L225 Difference]: With dead ends: 133467 [2023-12-20 20:22:45,991 INFO L226 Difference]: Without dead ends: 67711 [2023-12-20 20:22:46,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1534 GetRequests, 1524 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 20:22:46,098 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 555 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:46,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 957 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 20:22:46,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67711 states. [2023-12-20 20:22:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67711 to 66551. [2023-12-20 20:22:52,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66551 states, 43401 states have (on average 1.4083085643187945) internal successors, (61122), 43600 states have internal predecessors, (61122), 22134 states have call successors, (22134), 1015 states have call predecessors, (22134), 1015 states have return successors, (22134), 21935 states have call predecessors, (22134), 22134 states have call successors, (22134) [2023-12-20 20:22:52,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66551 states to 66551 states and 105390 transitions. [2023-12-20 20:22:52,754 INFO L78 Accepts]: Start accepts. Automaton has 66551 states and 105390 transitions. Word has length 766 [2023-12-20 20:22:52,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:22:52,755 INFO L495 AbstractCegarLoop]: Abstraction has 66551 states and 105390 transitions. [2023-12-20 20:22:52,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-12-20 20:22:52,755 INFO L276 IsEmpty]: Start isEmpty. Operand 66551 states and 105390 transitions. [2023-12-20 20:22:52,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2023-12-20 20:22:52,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:22:52,767 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:22:52,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 20:22:52,976 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 [2023-12-20 20:22:52,976 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:52,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:52,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1985825999, now seen corresponding path program 1 times [2023-12-20 20:22:52,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:52,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723409228] [2023-12-20 20:22:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:52,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:53,034 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:53,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240636246] [2023-12-20 20:22:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:53,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:53,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:53,035 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) [2023-12-20 20:22:53,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 20:22:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:53,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:22:53,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:54,320 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 12507 proven. 243 refuted. 0 times theorem prover too weak. 15810 trivial. 0 not checked. [2023-12-20 20:22:54,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:22:54,709 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 114 proven. 243 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-20 20:22:54,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:54,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723409228] [2023-12-20 20:22:54,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:54,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240636246] [2023-12-20 20:22:54,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240636246] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:22:54,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:22:54,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 20:22:54,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216314588] [2023-12-20 20:22:54,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:22:54,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:22:54,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:54,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:22:54,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:22:54,713 INFO L87 Difference]: Start difference. First operand 66551 states and 105390 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 2 states have call successors, (201), 2 states have call predecessors, (201), 4 states have return successors, (202), 2 states have call predecessors, (202), 2 states have call successors, (202) [2023-12-20 20:22:58,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:58,573 INFO L93 Difference]: Finished difference Result 122943 states and 193190 transitions. [2023-12-20 20:22:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 20:22:58,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 2 states have call successors, (201), 2 states have call predecessors, (201), 4 states have return successors, (202), 2 states have call predecessors, (202), 2 states have call successors, (202) Word has length 766 [2023-12-20 20:22:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:58,737 INFO L225 Difference]: With dead ends: 122943 [2023-12-20 20:22:58,738 INFO L226 Difference]: Without dead ends: 56611 [2023-12-20 20:22:58,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1534 GetRequests, 1524 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 20:22:58,847 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 422 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:58,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 943 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 20:22:58,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56611 states. [2023-12-20 20:23:03,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56611 to 31677. [2023-12-20 20:23:03,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31677 states, 22404 states have (on average 1.4627745045527585) internal successors, (32772), 22405 states have internal predecessors, (32772), 8760 states have call successors, (8760), 512 states have call predecessors, (8760), 512 states have return successors, (8760), 8759 states have call predecessors, (8760), 8760 states have call successors, (8760) [2023-12-20 20:23:03,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31677 states to 31677 states and 50292 transitions. [2023-12-20 20:23:03,377 INFO L78 Accepts]: Start accepts. Automaton has 31677 states and 50292 transitions. Word has length 766 [2023-12-20 20:23:03,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:23:03,378 INFO L495 AbstractCegarLoop]: Abstraction has 31677 states and 50292 transitions. [2023-12-20 20:23:03,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 2 states have call successors, (201), 2 states have call predecessors, (201), 4 states have return successors, (202), 2 states have call predecessors, (202), 2 states have call successors, (202) [2023-12-20 20:23:03,378 INFO L276 IsEmpty]: Start isEmpty. Operand 31677 states and 50292 transitions. [2023-12-20 20:23:03,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2023-12-20 20:23:03,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:23:03,386 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:23:03,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-20 20:23:03,597 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 [2023-12-20 20:23:03,598 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:23:03,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:23:03,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1403788539, now seen corresponding path program 1 times [2023-12-20 20:23:03,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:23:03,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366435894] [2023-12-20 20:23:03,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:23:03,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:23:03,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:23:03,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539441665] [2023-12-20 20:23:03,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:23:03,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:23:03,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:23:03,656 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) [2023-12-20 20:23:03,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-20 20:23:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:23:04,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-20 20:23:04,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:23:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 20:23:04,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:23:04,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:23:04,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366435894] [2023-12-20 20:23:04,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:23:04,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539441665] [2023-12-20 20:23:04,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539441665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:23:04,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:23:04,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 20:23:04,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510693440] [2023-12-20 20:23:04,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:23:04,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 20:23:04,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:23:04,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 20:23:04,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-20 20:23:04,497 INFO L87 Difference]: Start difference. First operand 31677 states and 50292 transitions. Second operand has 9 states, 9 states have (on average 18.88888888888889) internal successors, (170), 9 states have internal predecessors, (170), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:23:10,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:23:10,811 INFO L93 Difference]: Finished difference Result 102241 states and 161507 transitions. [2023-12-20 20:23:10,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 20:23:10,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.88888888888889) internal successors, (170), 9 states have internal predecessors, (170), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 767 [2023-12-20 20:23:10,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:23:10,990 INFO L225 Difference]: With dead ends: 102241 [2023-12-20 20:23:10,990 INFO L226 Difference]: Without dead ends: 70739 [2023-12-20 20:23:11,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2023-12-20 20:23:11,054 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 1976 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 894 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 3527 SdHoareTripleChecker+Invalid, 2352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 894 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 20:23:11,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1976 Valid, 3527 Invalid, 2352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [894 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 20:23:11,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70739 states. [2023-12-20 20:23:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70739 to 44308. [2023-12-20 20:23:14,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44308 states, 31931 states have (on average 1.4569853747142276) internal successors, (46523), 31932 states have internal predecessors, (46523), 11602 states have call successors, (11602), 774 states have call predecessors, (11602), 774 states have return successors, (11602), 11601 states have call predecessors, (11602), 11602 states have call successors, (11602) [2023-12-20 20:23:14,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44308 states to 44308 states and 69727 transitions. [2023-12-20 20:23:14,612 INFO L78 Accepts]: Start accepts. Automaton has 44308 states and 69727 transitions. Word has length 767 [2023-12-20 20:23:14,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:23:14,612 INFO L495 AbstractCegarLoop]: Abstraction has 44308 states and 69727 transitions. [2023-12-20 20:23:14,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.88888888888889) internal successors, (170), 9 states have internal predecessors, (170), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 20:23:14,613 INFO L276 IsEmpty]: Start isEmpty. Operand 44308 states and 69727 transitions. [2023-12-20 20:23:14,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2023-12-20 20:23:14,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:23:14,622 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:23:14,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-20 20:23:14,832 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 [2023-12-20 20:23:14,833 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:23:14,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:23:14,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1622643257, now seen corresponding path program 1 times [2023-12-20 20:23:14,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:23:14,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704824522] [2023-12-20 20:23:14,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:23:14,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:23:14,887 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:23:14,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545143363] [2023-12-20 20:23:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:23:14,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:23:14,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:23:14,889 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) [2023-12-20 20:23:14,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-20 20:23:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:23:15,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 20:23:15,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:23:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 20:23:15,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:23:15,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:23:15,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704824522] [2023-12-20 20:23:15,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:23:15,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545143363] [2023-12-20 20:23:15,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545143363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:23:15,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:23:15,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 20:23:15,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636483536] [2023-12-20 20:23:15,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:23:15,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:23:15,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:23:15,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:23:15,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:23:15,940 INFO L87 Difference]: Start difference. First operand 44308 states and 69727 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120)