/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-23.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:32:55,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:32:55,228 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 07:32:55,234 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:32:55,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:32:55,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:32:55,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:32:55,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:32:55,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:32:55,269 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:32:55,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:32:55,269 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:32:55,270 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:32:55,270 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:32:55,271 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:32:55,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:32:55,271 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:32:55,272 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:32:55,272 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:32:55,272 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:32:55,273 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:32:55,273 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:32:55,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:32:55,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:32:55,274 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:32:55,275 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:32:55,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:32:55,275 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:32:55,276 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:32:55,276 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:32:55,276 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:32:55,277 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:32:55,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:32:55,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:32:55,278 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:32:55,278 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:32:55,278 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:32:55,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:32:55,279 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:32:55,279 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:32:55,280 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:32:55,280 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:32:55,280 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:32:55,280 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:32:55,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:32:55,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:32:55,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:32:55,488 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:32:55,488 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:32:55,489 INFO L431 ainManager$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-23.i [2023-12-19 07:32:56,802 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:32:57,080 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:32:57,080 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-23.i [2023-12-19 07:32:57,111 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/639c68c34/b4cf5473a5f646d7bae8bd9ecc5b46f6/FLAGeb9b75c0b [2023-12-19 07:32:57,125 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/639c68c34/b4cf5473a5f646d7bae8bd9ecc5b46f6 [2023-12-19 07:32:57,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:32:57,129 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:32:57,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:32:57,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:32:57,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:32:57,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:32:57" (1/1) ... [2023-12-19 07:32:57,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7872c8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:57, skipping insertion in model container [2023-12-19 07:32:57,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:32:57" (1/1) ... [2023-12-19 07:32:57,195 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:32:57,375 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-23.i[916,929] [2023-12-19 07:32:57,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:32:57,587 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:32:57,596 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-23.i[916,929] [2023-12-19 07:32:57,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:32:57,718 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:32:57,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:57 WrapperNode [2023-12-19 07:32:57,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:32:57,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:32:57,721 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:32:57,721 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:32:57,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:57" (1/1) ... [2023-12-19 07:32:57,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:57" (1/1) ... [2023-12-19 07:32:57,919 INFO L138 Inliner]: procedures = 26, calls = 111, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 795 [2023-12-19 07:32:57,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:32:57,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:32:57,921 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:32:57,921 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:32:57,932 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:57" (1/1) ... [2023-12-19 07:32:57,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:57" (1/1) ... [2023-12-19 07:32:57,947 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:57" (1/1) ... [2023-12-19 07:32:57,989 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 07:32:57,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:57" (1/1) ... [2023-12-19 07:32:57,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:57" (1/1) ... [2023-12-19 07:32:58,014 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:57" (1/1) ... [2023-12-19 07:32:58,021 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:57" (1/1) ... [2023-12-19 07:32:58,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:57" (1/1) ... [2023-12-19 07:32:58,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:57" (1/1) ... [2023-12-19 07:32:58,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:32:58,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:32:58,079 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:32:58,079 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:32:58,080 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:57" (1/1) ... [2023-12-19 07:32:58,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:32:58,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:58,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 07:32:58,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 07:32:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:32:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:32:58,151 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:32:58,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:32:58,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:32:58,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:32:58,315 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:32:58,317 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:32:59,380 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:32:59,454 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:32:59,455 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:32:59,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:32:59 BoogieIcfgContainer [2023-12-19 07:32:59,455 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:32:59,457 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:32:59,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:32:59,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:32:59,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:32:57" (1/3) ... [2023-12-19 07:32:59,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425980ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:32:59, skipping insertion in model container [2023-12-19 07:32:59,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:32:57" (2/3) ... [2023-12-19 07:32:59,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425980ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:32:59, skipping insertion in model container [2023-12-19 07:32:59,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:32:59" (3/3) ... [2023-12-19 07:32:59,465 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-23.i [2023-12-19 07:32:59,481 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:32:59,482 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:32:59,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:32:59,546 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;@7935425c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:32:59,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:32:59,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 303 states, 202 states have (on average 1.6386138613861385) internal successors, (331), 203 states have internal predecessors, (331), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-19 07:32:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2023-12-19 07:32:59,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:59,598 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:32:59,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:59,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:59,605 INFO L85 PathProgramCache]: Analyzing trace with hash -894469703, now seen corresponding path program 1 times [2023-12-19 07:32:59,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:59,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062531576] [2023-12-19 07:32:59,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:59,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:00,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:00,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062531576] [2023-12-19 07:33:00,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:33:00,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896632541] [2023-12-19 07:33:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:00,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:00,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:00,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:00,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 07:33:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:00,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:33:00,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:00,526 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 18818 trivial. 0 not checked. [2023-12-19 07:33:00,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:33:00,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896632541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:33:00,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:33:00,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:33:00,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783746597] [2023-12-19 07:33:00,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:33:00,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:33:00,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:00,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:33:00,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:33:00,568 INFO L87 Difference]: Start difference. First operand has 303 states, 202 states have (on average 1.6386138613861385) internal successors, (331), 203 states have internal predecessors, (331), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-19 07:33:00,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:00,649 INFO L93 Difference]: Finished difference Result 599 states and 1142 transitions. [2023-12-19 07:33:00,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:33:00,655 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 2 states have call successors, (98) Word has length 630 [2023-12-19 07:33:00,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:00,667 INFO L225 Difference]: With dead ends: 599 [2023-12-19 07:33:00,668 INFO L226 Difference]: Without dead ends: 297 [2023-12-19 07:33:00,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 629 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:33:00,684 INFO L413 NwaCegarLoop]: 507 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, 507 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:00,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 507 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:33:00,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-12-19 07:33:00,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2023-12-19 07:33:00,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 197 states have (on average 1.5939086294416243) internal successors, (314), 197 states have internal predecessors, (314), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-19 07:33:00,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 510 transitions. [2023-12-19 07:33:00,794 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 510 transitions. Word has length 630 [2023-12-19 07:33:00,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:00,796 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 510 transitions. [2023-12-19 07:33:00,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-19 07:33:00,797 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 510 transitions. [2023-12-19 07:33:00,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2023-12-19 07:33:00,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:00,811 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:00,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:01,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 07:33:01,021 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:01,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:01,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1233429440, now seen corresponding path program 1 times [2023-12-19 07:33:01,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:01,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682353776] [2023-12-19 07:33:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:01,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:01,226 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:01,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872935833] [2023-12-19 07:33:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:01,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:01,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:01,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:01,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 07:33:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:01,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:33:01,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-19 07:33:02,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:33:02,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:02,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682353776] [2023-12-19 07:33:02,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:02,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872935833] [2023-12-19 07:33:02,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872935833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:33:02,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:33:02,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:33:02,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750123943] [2023-12-19 07:33:02,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:33:02,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:33:02,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:02,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:33:02,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:33:02,386 INFO L87 Difference]: Start difference. First operand 297 states and 510 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:02,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:02,523 INFO L93 Difference]: Finished difference Result 889 states and 1528 transitions. [2023-12-19 07:33:02,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:33:02,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 631 [2023-12-19 07:33:02,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:02,533 INFO L225 Difference]: With dead ends: 889 [2023-12-19 07:33:02,533 INFO L226 Difference]: Without dead ends: 593 [2023-12-19 07:33:02,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 629 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:33:02,536 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 217 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:02,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 983 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:33:02,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-12-19 07:33:02,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 590. [2023-12-19 07:33:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 391 states have (on average 1.5933503836317136) internal successors, (623), 391 states have internal predecessors, (623), 196 states have call successors, (196), 2 states have call predecessors, (196), 2 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-19 07:33:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 1015 transitions. [2023-12-19 07:33:02,669 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 1015 transitions. Word has length 631 [2023-12-19 07:33:02,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:02,671 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 1015 transitions. [2023-12-19 07:33:02,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:02,672 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 1015 transitions. [2023-12-19 07:33:02,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-19 07:33:02,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:02,684 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:02,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:02,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 07:33:02,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:02,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:02,895 INFO L85 PathProgramCache]: Analyzing trace with hash -170333401, now seen corresponding path program 1 times [2023-12-19 07:33:02,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:02,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732718064] [2023-12-19 07:33:02,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:02,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:02,981 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:02,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680493127] [2023-12-19 07:33:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:02,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:02,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:02,983 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:03,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 07:33:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:03,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:33:03,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-19 07:33:04,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:33:04,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:04,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732718064] [2023-12-19 07:33:04,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:04,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680493127] [2023-12-19 07:33:04,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680493127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:33:04,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:33:04,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:33:04,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759967261] [2023-12-19 07:33:04,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:33:04,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:33:04,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:04,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:33:04,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:33:04,087 INFO L87 Difference]: Start difference. First operand 590 states and 1015 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:04,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:04,134 INFO L93 Difference]: Finished difference Result 1179 states and 2029 transitions. [2023-12-19 07:33:04,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:33:04,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 632 [2023-12-19 07:33:04,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:04,141 INFO L225 Difference]: With dead ends: 1179 [2023-12-19 07:33:04,142 INFO L226 Difference]: Without dead ends: 590 [2023-12-19 07:33:04,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:33:04,145 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 210 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:04,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 501 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:33:04,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-12-19 07:33:04,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2023-12-19 07:33:04,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 391 states have (on average 1.588235294117647) internal successors, (621), 391 states have internal predecessors, (621), 196 states have call successors, (196), 2 states have call predecessors, (196), 2 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-19 07:33:04,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 1013 transitions. [2023-12-19 07:33:04,222 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 1013 transitions. Word has length 632 [2023-12-19 07:33:04,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:04,223 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 1013 transitions. [2023-12-19 07:33:04,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:04,224 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 1013 transitions. [2023-12-19 07:33:04,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-19 07:33:04,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:04,235 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:04,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:04,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:04,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:04,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:04,448 INFO L85 PathProgramCache]: Analyzing trace with hash 77813093, now seen corresponding path program 1 times [2023-12-19 07:33:04,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:04,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211529622] [2023-12-19 07:33:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:04,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:04,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:04,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181183081] [2023-12-19 07:33:04,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:04,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:04,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:04,550 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:04,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 07:33:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:04,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:33:04,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:05,072 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-19 07:33:05,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:33:05,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:05,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211529622] [2023-12-19 07:33:05,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:05,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181183081] [2023-12-19 07:33:05,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181183081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:33:05,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:33:05,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:33:05,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826048142] [2023-12-19 07:33:05,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:33:05,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:33:05,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:05,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:33:05,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:33:05,077 INFO L87 Difference]: Start difference. First operand 590 states and 1013 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:05,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:05,168 INFO L93 Difference]: Finished difference Result 1579 states and 2711 transitions. [2023-12-19 07:33:05,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:33:05,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 632 [2023-12-19 07:33:05,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:05,177 INFO L225 Difference]: With dead ends: 1579 [2023-12-19 07:33:05,177 INFO L226 Difference]: Without dead ends: 990 [2023-12-19 07:33:05,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:33:05,181 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 304 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1002 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 [2023-12-19 07:33:05,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1002 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:33:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-12-19 07:33:05,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 986. [2023-12-19 07:33:05,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 669 states have (on average 1.5994020926756354) internal successors, (1070), 671 states have internal predecessors, (1070), 312 states have call successors, (312), 4 states have call predecessors, (312), 4 states have return successors, (312), 310 states have call predecessors, (312), 312 states have call successors, (312) [2023-12-19 07:33:05,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1694 transitions. [2023-12-19 07:33:05,326 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1694 transitions. Word has length 632 [2023-12-19 07:33:05,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:05,328 INFO L495 AbstractCegarLoop]: Abstraction has 986 states and 1694 transitions. [2023-12-19 07:33:05,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:05,328 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1694 transitions. [2023-12-19 07:33:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-19 07:33:05,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:05,336 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:05,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:05,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:05,548 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:05,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:05,549 INFO L85 PathProgramCache]: Analyzing trace with hash -56200413, now seen corresponding path program 1 times [2023-12-19 07:33:05,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:05,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27940540] [2023-12-19 07:33:05,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:05,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:05,619 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:05,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759207125] [2023-12-19 07:33:05,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:05,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:05,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:05,621 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:05,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 07:33:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:05,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:33:06,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-19 07:33:06,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:33:06,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:06,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27940540] [2023-12-19 07:33:06,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:06,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759207125] [2023-12-19 07:33:06,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759207125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:33:06,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:33:06,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:33:06,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659746998] [2023-12-19 07:33:06,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:33:06,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:33:06,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:06,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:33:06,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:33:06,079 INFO L87 Difference]: Start difference. First operand 986 states and 1694 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:06,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:06,242 INFO L93 Difference]: Finished difference Result 2920 states and 5012 transitions. [2023-12-19 07:33:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:33:06,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 632 [2023-12-19 07:33:06,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:06,256 INFO L225 Difference]: With dead ends: 2920 [2023-12-19 07:33:06,256 INFO L226 Difference]: Without dead ends: 1935 [2023-12-19 07:33:06,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:33:06,261 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 443 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:06,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1331 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:33:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2023-12-19 07:33:06,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1300. [2023-12-19 07:33:06,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 983 states have (on average 1.6826042726347914) internal successors, (1654), 985 states have internal predecessors, (1654), 312 states have call successors, (312), 4 states have call predecessors, (312), 4 states have return successors, (312), 310 states have call predecessors, (312), 312 states have call successors, (312) [2023-12-19 07:33:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 2278 transitions. [2023-12-19 07:33:06,434 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 2278 transitions. Word has length 632 [2023-12-19 07:33:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:06,435 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 2278 transitions. [2023-12-19 07:33:06,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:06,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 2278 transitions. [2023-12-19 07:33:06,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-19 07:33:06,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:06,442 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:06,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:06,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:06,654 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:06,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:06,655 INFO L85 PathProgramCache]: Analyzing trace with hash -110593311, now seen corresponding path program 1 times [2023-12-19 07:33:06,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:06,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542210332] [2023-12-19 07:33:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:06,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:06,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:06,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294147384] [2023-12-19 07:33:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:06,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:06,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:06,729 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:06,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 07:33:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:07,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:33:07,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-19 07:33:07,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:33:07,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:07,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542210332] [2023-12-19 07:33:07,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:07,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294147384] [2023-12-19 07:33:07,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294147384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:33:07,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:33:07,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:33:07,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993466516] [2023-12-19 07:33:07,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:33:07,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:33:07,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:07,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:33:07,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:33:07,217 INFO L87 Difference]: Start difference. First operand 1300 states and 2278 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:07,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:07,410 INFO L93 Difference]: Finished difference Result 3234 states and 5588 transitions. [2023-12-19 07:33:07,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:33:07,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 632 [2023-12-19 07:33:07,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:07,422 INFO L225 Difference]: With dead ends: 3234 [2023-12-19 07:33:07,422 INFO L226 Difference]: Without dead ends: 1935 [2023-12-19 07:33:07,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:33:07,428 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 428 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:07,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1106 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:33:07,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2023-12-19 07:33:07,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1300. [2023-12-19 07:33:07,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 983 states have (on average 1.6744659206510681) internal successors, (1646), 985 states have internal predecessors, (1646), 312 states have call successors, (312), 4 states have call predecessors, (312), 4 states have return successors, (312), 310 states have call predecessors, (312), 312 states have call successors, (312) [2023-12-19 07:33:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 2270 transitions. [2023-12-19 07:33:07,625 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 2270 transitions. Word has length 632 [2023-12-19 07:33:07,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:07,626 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 2270 transitions. [2023-12-19 07:33:07,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:07,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 2270 transitions. [2023-12-19 07:33:07,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-19 07:33:07,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:07,633 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:07,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:07,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:07,849 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:07,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:07,850 INFO L85 PathProgramCache]: Analyzing trace with hash -2104738017, now seen corresponding path program 1 times [2023-12-19 07:33:07,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:07,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210874433] [2023-12-19 07:33:07,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:07,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:07,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:07,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1137760744] [2023-12-19 07:33:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:07,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:07,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:07,929 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:07,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 07:33:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:08,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:33:08,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-19 07:33:08,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:33:08,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:08,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210874433] [2023-12-19 07:33:08,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:08,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137760744] [2023-12-19 07:33:08,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137760744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:33:08,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:33:08,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:33:08,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369698610] [2023-12-19 07:33:08,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:33:08,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:33:08,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:08,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:33:08,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:33:08,922 INFO L87 Difference]: Start difference. First operand 1300 states and 2270 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:09,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:09,126 INFO L93 Difference]: Finished difference Result 3906 states and 6822 transitions. [2023-12-19 07:33:09,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:33:09,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 632 [2023-12-19 07:33:09,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:09,142 INFO L225 Difference]: With dead ends: 3906 [2023-12-19 07:33:09,142 INFO L226 Difference]: Without dead ends: 2607 [2023-12-19 07:33:09,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 629 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:33:09,148 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 245 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:09,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1493 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:33:09,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2023-12-19 07:33:09,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2595. [2023-12-19 07:33:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2595 states, 1962 states have (on average 1.673802242609582) internal successors, (3284), 1966 states have internal predecessors, (3284), 624 states have call successors, (624), 8 states have call predecessors, (624), 8 states have return successors, (624), 620 states have call predecessors, (624), 624 states have call successors, (624) [2023-12-19 07:33:09,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2595 states to 2595 states and 4532 transitions. [2023-12-19 07:33:09,531 INFO L78 Accepts]: Start accepts. Automaton has 2595 states and 4532 transitions. Word has length 632 [2023-12-19 07:33:09,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:09,533 INFO L495 AbstractCegarLoop]: Abstraction has 2595 states and 4532 transitions. [2023-12-19 07:33:09,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:09,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2595 states and 4532 transitions. [2023-12-19 07:33:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-19 07:33:09,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:09,543 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:09,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:09,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:09,755 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:09,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:09,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2027837219, now seen corresponding path program 1 times [2023-12-19 07:33:09,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:09,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694587318] [2023-12-19 07:33:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:09,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:09,832 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:09,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759197589] [2023-12-19 07:33:09,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:09,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:09,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:09,837 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:09,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 07:33:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:10,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:33:10,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9493 proven. 129 refuted. 0 times theorem prover too weak. 9390 trivial. 0 not checked. [2023-12-19 07:33:10,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:33:11,007 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 162 proven. 129 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-19 07:33:11,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:11,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694587318] [2023-12-19 07:33:11,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:11,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759197589] [2023-12-19 07:33:11,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759197589] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:33:11,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:33:11,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:33:11,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128813398] [2023-12-19 07:33:11,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:33:11,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:33:11,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:11,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:33:11,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:33:11,012 INFO L87 Difference]: Start difference. First operand 2595 states and 4532 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2023-12-19 07:33:12,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:12,005 INFO L93 Difference]: Finished difference Result 5327 states and 9247 transitions. [2023-12-19 07:33:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:33:12,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) Word has length 632 [2023-12-19 07:33:12,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:12,021 INFO L225 Difference]: With dead ends: 5327 [2023-12-19 07:33:12,021 INFO L226 Difference]: Without dead ends: 2733 [2023-12-19 07:33:12,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1266 GetRequests, 1256 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:33:12,031 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 565 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:12,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1158 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 07:33:12,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2023-12-19 07:33:12,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2714. [2023-12-19 07:33:12,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2019 states have (on average 1.638930163447251) internal successors, (3309), 2024 states have internal predecessors, (3309), 678 states have call successors, (678), 16 states have call predecessors, (678), 16 states have return successors, (678), 673 states have call predecessors, (678), 678 states have call successors, (678) [2023-12-19 07:33:12,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 4665 transitions. [2023-12-19 07:33:12,420 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 4665 transitions. Word has length 632 [2023-12-19 07:33:12,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:12,421 INFO L495 AbstractCegarLoop]: Abstraction has 2714 states and 4665 transitions. [2023-12-19 07:33:12,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2023-12-19 07:33:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 4665 transitions. [2023-12-19 07:33:12,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-19 07:33:12,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:12,430 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:12,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:12,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 07:33:12,642 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:12,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:12,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1151818213, now seen corresponding path program 1 times [2023-12-19 07:33:12,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:12,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490607543] [2023-12-19 07:33:12,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:12,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:12,716 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:12,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151202547] [2023-12-19 07:33:12,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:12,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:12,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:12,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:12,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 07:33:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:13,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:33:13,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-19 07:33:13,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:33:13,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:13,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490607543] [2023-12-19 07:33:13,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:13,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151202547] [2023-12-19 07:33:13,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151202547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:33:13,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:33:13,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:33:13,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939555337] [2023-12-19 07:33:13,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:33:13,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:33:13,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:13,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:33:13,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:33:13,188 INFO L87 Difference]: Start difference. First operand 2714 states and 4665 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:13,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:13,666 INFO L93 Difference]: Finished difference Result 7472 states and 12927 transitions. [2023-12-19 07:33:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:33:13,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 632 [2023-12-19 07:33:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:13,695 INFO L225 Difference]: With dead ends: 7472 [2023-12-19 07:33:13,696 INFO L226 Difference]: Without dead ends: 4846 [2023-12-19 07:33:13,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 629 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:33:13,757 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 345 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:13,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 1930 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:33:13,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4846 states. [2023-12-19 07:33:14,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4846 to 4822. [2023-12-19 07:33:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 3791 states have (on average 1.6768662621999473) internal successors, (6357), 3804 states have internal predecessors, (6357), 1006 states have call successors, (1006), 24 states have call predecessors, (1006), 24 states have return successors, (1006), 993 states have call predecessors, (1006), 1006 states have call successors, (1006) [2023-12-19 07:33:14,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 8369 transitions. [2023-12-19 07:33:14,231 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 8369 transitions. Word has length 632 [2023-12-19 07:33:14,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:14,232 INFO L495 AbstractCegarLoop]: Abstraction has 4822 states and 8369 transitions. [2023-12-19 07:33:14,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 8369 transitions. [2023-12-19 07:33:14,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-19 07:33:14,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:14,249 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:14,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:14,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:14,460 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:14,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:14,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1818292889, now seen corresponding path program 1 times [2023-12-19 07:33:14,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:14,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944541100] [2023-12-19 07:33:14,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:14,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:14,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:14,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935783844] [2023-12-19 07:33:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:14,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:14,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:14,565 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:14,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 07:33:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:14,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:33:15,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 7623 proven. 78 refuted. 0 times theorem prover too weak. 11311 trivial. 0 not checked. [2023-12-19 07:33:15,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:33:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 213 proven. 78 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-19 07:33:15,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:15,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944541100] [2023-12-19 07:33:15,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:15,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935783844] [2023-12-19 07:33:15,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935783844] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:33:15,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:33:15,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 07:33:15,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320222806] [2023-12-19 07:33:15,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:33:15,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:33:15,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:15,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:33:15,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:33:15,712 INFO L87 Difference]: Start difference. First operand 4822 states and 8369 transitions. Second operand has 12 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 3 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 3 states have call predecessors, (125), 3 states have call successors, (125) [2023-12-19 07:33:17,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:17,518 INFO L93 Difference]: Finished difference Result 13104 states and 22555 transitions. [2023-12-19 07:33:17,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 07:33:17,519 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 3 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 3 states have call predecessors, (125), 3 states have call successors, (125) Word has length 632 [2023-12-19 07:33:17,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:17,567 INFO L225 Difference]: With dead ends: 13104 [2023-12-19 07:33:17,568 INFO L226 Difference]: Without dead ends: 8370 [2023-12-19 07:33:17,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1277 GetRequests, 1253 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2023-12-19 07:33:17,586 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1455 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 901 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 901 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:17,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1869 Invalid, 2053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [901 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 07:33:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8370 states. [2023-12-19 07:33:18,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8370 to 5616. [2023-12-19 07:33:18,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5616 states, 4475 states have (on average 1.6735195530726257) internal successors, (7489), 4490 states have internal predecessors, (7489), 1105 states have call successors, (1105), 35 states have call predecessors, (1105), 35 states have return successors, (1105), 1090 states have call predecessors, (1105), 1105 states have call successors, (1105) [2023-12-19 07:33:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5616 states to 5616 states and 9699 transitions. [2023-12-19 07:33:18,152 INFO L78 Accepts]: Start accepts. Automaton has 5616 states and 9699 transitions. Word has length 632 [2023-12-19 07:33:18,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:18,153 INFO L495 AbstractCegarLoop]: Abstraction has 5616 states and 9699 transitions. [2023-12-19 07:33:18,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 3 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 3 states have call predecessors, (125), 3 states have call successors, (125) [2023-12-19 07:33:18,154 INFO L276 IsEmpty]: Start isEmpty. Operand 5616 states and 9699 transitions. [2023-12-19 07:33:18,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-19 07:33:18,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:18,167 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:18,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:18,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 07:33:18,378 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:18,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:18,379 INFO L85 PathProgramCache]: Analyzing trace with hash 920899611, now seen corresponding path program 1 times [2023-12-19 07:33:18,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:18,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849494882] [2023-12-19 07:33:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:18,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:18,439 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:18,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102047906] [2023-12-19 07:33:18,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:18,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:18,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:18,441 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:18,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 07:33:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:18,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:33:18,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:19,146 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9003 proven. 108 refuted. 0 times theorem prover too weak. 9901 trivial. 0 not checked. [2023-12-19 07:33:19,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:33:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 183 proven. 108 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-19 07:33:19,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:19,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849494882] [2023-12-19 07:33:19,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:19,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102047906] [2023-12-19 07:33:19,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102047906] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:33:19,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:33:19,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:33:19,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139054003] [2023-12-19 07:33:19,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:33:19,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:33:19,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:19,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:33:19,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:33:19,496 INFO L87 Difference]: Start difference. First operand 5616 states and 9699 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) [2023-12-19 07:33:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:20,264 INFO L93 Difference]: Finished difference Result 11214 states and 19322 transitions. [2023-12-19 07:33:20,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:33:20,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) Word has length 632 [2023-12-19 07:33:20,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:20,298 INFO L225 Difference]: With dead ends: 11214 [2023-12-19 07:33:20,298 INFO L226 Difference]: Without dead ends: 5686 [2023-12-19 07:33:20,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1266 GetRequests, 1256 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:33:20,318 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 307 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:20,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 991 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:33:20,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2023-12-19 07:33:20,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 5632. [2023-12-19 07:33:20,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5632 states, 4487 states have (on average 1.647648763093381) internal successors, (7393), 4502 states have internal predecessors, (7393), 1105 states have call successors, (1105), 39 states have call predecessors, (1105), 39 states have return successors, (1105), 1090 states have call predecessors, (1105), 1105 states have call successors, (1105) [2023-12-19 07:33:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5632 states to 5632 states and 9603 transitions. [2023-12-19 07:33:20,901 INFO L78 Accepts]: Start accepts. Automaton has 5632 states and 9603 transitions. Word has length 632 [2023-12-19 07:33:20,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:20,903 INFO L495 AbstractCegarLoop]: Abstraction has 5632 states and 9603 transitions. [2023-12-19 07:33:20,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) [2023-12-19 07:33:20,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5632 states and 9603 transitions. [2023-12-19 07:33:20,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-19 07:33:20,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:20,918 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:20,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:21,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 07:33:21,126 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:21,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:21,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1681555999, now seen corresponding path program 1 times [2023-12-19 07:33:21,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:21,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657732449] [2023-12-19 07:33:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:21,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:21,185 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:21,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035392546] [2023-12-19 07:33:21,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:21,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:21,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:21,188 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:21,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 07:33:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:21,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:33:21,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:21,731 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 5943 proven. 54 refuted. 0 times theorem prover too weak. 13015 trivial. 0 not checked. [2023-12-19 07:33:21,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:33:22,229 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 237 proven. 54 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-19 07:33:22,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:22,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657732449] [2023-12-19 07:33:22,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:22,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035392546] [2023-12-19 07:33:22,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035392546] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:33:22,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:33:22,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 07:33:22,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975033713] [2023-12-19 07:33:22,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:33:22,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:33:22,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:22,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:33:22,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:33:22,233 INFO L87 Difference]: Start difference. First operand 5632 states and 9603 transitions. Second operand has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 3 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) [2023-12-19 07:33:23,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:23,114 INFO L93 Difference]: Finished difference Result 11246 states and 19130 transitions. [2023-12-19 07:33:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:33:23,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 3 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) Word has length 632 [2023-12-19 07:33:23,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:23,150 INFO L225 Difference]: With dead ends: 11246 [2023-12-19 07:33:23,151 INFO L226 Difference]: Without dead ends: 5702 [2023-12-19 07:33:23,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1266 GetRequests, 1256 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:33:23,167 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 323 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:23,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 993 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:33:23,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5702 states. [2023-12-19 07:33:23,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5702 to 5648. [2023-12-19 07:33:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5648 states, 4499 states have (on average 1.6370304512113802) internal successors, (7365), 4514 states have internal predecessors, (7365), 1105 states have call successors, (1105), 43 states have call predecessors, (1105), 43 states have return successors, (1105), 1090 states have call predecessors, (1105), 1105 states have call successors, (1105) [2023-12-19 07:33:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5648 states to 5648 states and 9575 transitions. [2023-12-19 07:33:23,707 INFO L78 Accepts]: Start accepts. Automaton has 5648 states and 9575 transitions. Word has length 632 [2023-12-19 07:33:23,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:23,711 INFO L495 AbstractCegarLoop]: Abstraction has 5648 states and 9575 transitions. [2023-12-19 07:33:23,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 3 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) [2023-12-19 07:33:23,711 INFO L276 IsEmpty]: Start isEmpty. Operand 5648 states and 9575 transitions. [2023-12-19 07:33:23,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-12-19 07:33:23,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:23,725 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:23,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:23,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 07:33:23,937 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:23,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:23,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1058514008, now seen corresponding path program 1 times [2023-12-19 07:33:23,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:23,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470780800] [2023-12-19 07:33:23,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:23,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:23,995 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:23,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680469157] [2023-12-19 07:33:23,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:23,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:23,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:23,997 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:24,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 07:33:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:24,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:33:24,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-19 07:33:25,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:33:25,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:25,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470780800] [2023-12-19 07:33:25,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:25,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680469157] [2023-12-19 07:33:25,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680469157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:33:25,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:33:25,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:33:25,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589761718] [2023-12-19 07:33:25,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:33:25,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:33:25,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:25,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:33:25,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:33:25,144 INFO L87 Difference]: Start difference. First operand 5648 states and 9575 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:25,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:25,946 INFO L93 Difference]: Finished difference Result 16768 states and 28441 transitions. [2023-12-19 07:33:25,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:33:25,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 633 [2023-12-19 07:33:25,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:25,984 INFO L225 Difference]: With dead ends: 16768 [2023-12-19 07:33:25,984 INFO L226 Difference]: Without dead ends: 11208 [2023-12-19 07:33:26,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:33:26,002 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 188 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:26,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 963 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:33:26,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11208 states. [2023-12-19 07:33:26,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11208 to 10668. [2023-12-19 07:33:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 8527 states have (on average 1.6323443180485517) internal successors, (13919), 8554 states have internal predecessors, (13919), 2057 states have call successors, (2057), 83 states have call predecessors, (2057), 83 states have return successors, (2057), 2030 states have call predecessors, (2057), 2057 states have call successors, (2057) [2023-12-19 07:33:26,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 18033 transitions. [2023-12-19 07:33:27,001 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 18033 transitions. Word has length 633 [2023-12-19 07:33:27,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:27,003 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 18033 transitions. [2023-12-19 07:33:27,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-19 07:33:27,003 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 18033 transitions. [2023-12-19 07:33:27,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-12-19 07:33:27,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:27,031 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:27,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:27,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 07:33:27,245 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:27,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:27,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1035881754, now seen corresponding path program 1 times [2023-12-19 07:33:27,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:27,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509047355] [2023-12-19 07:33:27,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:27,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:27,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:27,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216558862] [2023-12-19 07:33:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:27,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:27,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:27,306 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:27,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 07:33:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:27,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 07:33:27,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 8413 proven. 93 refuted. 0 times theorem prover too weak. 10506 trivial. 0 not checked. [2023-12-19 07:33:28,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:33:29,340 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 198 proven. 93 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-19 07:33:29,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:29,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509047355] [2023-12-19 07:33:29,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:29,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216558862] [2023-12-19 07:33:29,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216558862] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:33:29,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:33:29,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-19 07:33:29,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277609320] [2023-12-19 07:33:29,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:33:29,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 07:33:29,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:29,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 07:33:29,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:33:29,344 INFO L87 Difference]: Start difference. First operand 10668 states and 18033 transitions. Second operand has 10 states, 10 states have (on average 24.1) internal successors, (241), 10 states have internal predecessors, (241), 4 states have call successors, (196), 3 states have call predecessors, (196), 5 states have return successors, (196), 4 states have call predecessors, (196), 4 states have call successors, (196) [2023-12-19 07:33:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:34,722 INFO L93 Difference]: Finished difference Result 61978 states and 104243 transitions. [2023-12-19 07:33:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 07:33:34,723 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.1) internal successors, (241), 10 states have internal predecessors, (241), 4 states have call successors, (196), 3 states have call predecessors, (196), 5 states have return successors, (196), 4 states have call predecessors, (196), 4 states have call successors, (196) Word has length 633 [2023-12-19 07:33:34,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:34,934 INFO L225 Difference]: With dead ends: 61978 [2023-12-19 07:33:34,934 INFO L226 Difference]: Without dead ends: 51398 [2023-12-19 07:33:34,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1271 GetRequests, 1257 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=142, Unknown=0, NotChecked=0, Total=240 [2023-12-19 07:33:34,983 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 2224 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:34,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 1964 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 07:33:35,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51398 states. [2023-12-19 07:33:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51398 to 35460. [2023-12-19 07:33:39,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35460 states, 27655 states have (on average 1.605170855179895) internal successors, (44391), 27762 states have internal predecessors, (44391), 7497 states have call successors, (7497), 307 states have call predecessors, (7497), 307 states have return successors, (7497), 7390 states have call predecessors, (7497), 7497 states have call successors, (7497) [2023-12-19 07:33:39,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35460 states to 35460 states and 59385 transitions. [2023-12-19 07:33:39,138 INFO L78 Accepts]: Start accepts. Automaton has 35460 states and 59385 transitions. Word has length 633 [2023-12-19 07:33:39,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:39,139 INFO L495 AbstractCegarLoop]: Abstraction has 35460 states and 59385 transitions. [2023-12-19 07:33:39,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.1) internal successors, (241), 10 states have internal predecessors, (241), 4 states have call successors, (196), 3 states have call predecessors, (196), 5 states have return successors, (196), 4 states have call predecessors, (196), 4 states have call successors, (196) [2023-12-19 07:33:39,140 INFO L276 IsEmpty]: Start isEmpty. Operand 35460 states and 59385 transitions. [2023-12-19 07:33:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-12-19 07:33:39,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:39,185 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:39,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:39,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:39,397 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:39,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:39,398 INFO L85 PathProgramCache]: Analyzing trace with hash 925692904, now seen corresponding path program 1 times [2023-12-19 07:33:39,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:39,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847551879] [2023-12-19 07:33:39,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:39,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:39,453 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:39,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527941065] [2023-12-19 07:33:39,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:39,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:39,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:39,455 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:39,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 07:33:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:39,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 07:33:39,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:41,651 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 10689 proven. 234 refuted. 0 times theorem prover too weak. 8089 trivial. 0 not checked. [2023-12-19 07:33:41,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:33:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 342 proven. 237 refuted. 0 times theorem prover too weak. 18433 trivial. 0 not checked. [2023-12-19 07:33:44,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:44,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847551879] [2023-12-19 07:33:44,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:44,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527941065] [2023-12-19 07:33:44,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527941065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:33:44,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:33:44,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-12-19 07:33:44,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971395913] [2023-12-19 07:33:44,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:33:44,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 07:33:44,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:44,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 07:33:44,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2023-12-19 07:33:44,697 INFO L87 Difference]: Start difference. First operand 35460 states and 59385 transitions. Second operand has 20 states, 20 states have (on average 13.95) internal successors, (279), 20 states have internal predecessors, (279), 6 states have call successors, (196), 4 states have call predecessors, (196), 8 states have return successors, (196), 6 states have call predecessors, (196), 6 states have call successors, (196) [2023-12-19 07:34:08,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:08,302 INFO L93 Difference]: Finished difference Result 201718 states and 331717 transitions. [2023-12-19 07:34:08,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-19 07:34:08,303 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 13.95) internal successors, (279), 20 states have internal predecessors, (279), 6 states have call successors, (196), 4 states have call predecessors, (196), 8 states have return successors, (196), 6 states have call predecessors, (196), 6 states have call successors, (196) Word has length 633 [2023-12-19 07:34:08,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:09,371 INFO L225 Difference]: With dead ends: 201718 [2023-12-19 07:34:09,371 INFO L226 Difference]: Without dead ends: 166346 [2023-12-19 07:34:09,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1340 GetRequests, 1266 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1970 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1755, Invalid=3945, Unknown=0, NotChecked=0, Total=5700 [2023-12-19 07:34:09,504 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 4814 mSDsluCounter, 5615 mSDsCounter, 0 mSdLazyCounter, 5572 mSolverCounterSat, 2465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4930 SdHoareTripleChecker+Valid, 6183 SdHoareTripleChecker+Invalid, 8037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2465 IncrementalHoareTripleChecker+Valid, 5572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:09,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4930 Valid, 6183 Invalid, 8037 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2465 Valid, 5572 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-19 07:34:09,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166346 states. [2023-12-19 07:34:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166346 to 90740. [2023-12-19 07:34:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90740 states, 68881 states have (on average 1.565584123343157) internal successors, (107839), 69264 states have internal predecessors, (107839), 20685 states have call successors, (20685), 1173 states have call predecessors, (20685), 1173 states have return successors, (20685), 20302 states have call predecessors, (20685), 20685 states have call successors, (20685) [2023-12-19 07:34:22,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90740 states to 90740 states and 149209 transitions. [2023-12-19 07:34:22,252 INFO L78 Accepts]: Start accepts. Automaton has 90740 states and 149209 transitions. Word has length 633 [2023-12-19 07:34:22,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:22,254 INFO L495 AbstractCegarLoop]: Abstraction has 90740 states and 149209 transitions. [2023-12-19 07:34:22,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.95) internal successors, (279), 20 states have internal predecessors, (279), 6 states have call successors, (196), 4 states have call predecessors, (196), 8 states have return successors, (196), 6 states have call predecessors, (196), 6 states have call successors, (196) [2023-12-19 07:34:22,254 INFO L276 IsEmpty]: Start isEmpty. Operand 90740 states and 149209 transitions. [2023-12-19 07:34:22,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2023-12-19 07:34:22,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:22,322 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:34:22,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 07:34:22,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 07:34:22,524 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:22,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:22,524 INFO L85 PathProgramCache]: Analyzing trace with hash -397375723, now seen corresponding path program 1 times [2023-12-19 07:34:22,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:22,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229484487] [2023-12-19 07:34:22,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:22,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:22,584 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:22,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413431185] [2023-12-19 07:34:22,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:22,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:22,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:22,586 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:34:22,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 07:34:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:23,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-19 07:34:23,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 12418 proven. 552 refuted. 0 times theorem prover too weak. 6042 trivial. 0 not checked. [2023-12-19 07:34:48,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:34:52,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:52,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229484487] [2023-12-19 07:34:52,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:52,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413431185] [2023-12-19 07:34:52,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413431185] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 07:34:52,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 07:34:52,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2023-12-19 07:34:52,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562192702] [2023-12-19 07:34:52,554 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 07:34:52,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-19 07:34:52,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-19 07:34:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=855, Unknown=1, NotChecked=0, Total=992 [2023-12-19 07:34:52,558 INFO L87 Difference]: Start difference. First operand 90740 states and 149209 transitions. Second operand has 22 states, 22 states have (on average 7.636363636363637) internal successors, (168), 21 states have internal predecessors, (168), 5 states have call successors, (98), 5 states have call predecessors, (98), 8 states have return successors, (98), 5 states have call predecessors, (98), 5 states have call successors, (98) [2023-12-19 07:35:17,976 WARN L293 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 91 DAG size of output: 85 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 07:35:25,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 07:35:35,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 07:35:48,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 07:36:07,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:07,941 INFO L93 Difference]: Finished difference Result 335201 states and 547004 transitions. [2023-12-19 07:36:07,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-19 07:36:07,941 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.636363636363637) internal successors, (168), 21 states have internal predecessors, (168), 5 states have call successors, (98), 5 states have call predecessors, (98), 8 states have return successors, (98), 5 states have call predecessors, (98), 5 states have call successors, (98) Word has length 634 [2023-12-19 07:36:07,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:09,043 INFO L225 Difference]: With dead ends: 335201 [2023-12-19 07:36:09,043 INFO L226 Difference]: Without dead ends: 244557 [2023-12-19 07:36:09,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 808 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=1209, Invalid=4340, Unknown=1, NotChecked=0, Total=5550 [2023-12-19 07:36:09,253 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 5624 mSDsluCounter, 4369 mSDsCounter, 0 mSdLazyCounter, 5099 mSolverCounterSat, 1140 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5664 SdHoareTripleChecker+Valid, 4784 SdHoareTripleChecker+Invalid, 6240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1140 IncrementalHoareTripleChecker+Valid, 5099 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:09,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5664 Valid, 4784 Invalid, 6240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1140 Valid, 5099 Invalid, 1 Unknown, 0 Unchecked, 23.4s Time] [2023-12-19 07:36:09,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244557 states. [2023-12-19 07:36:26,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244557 to 113124. [2023-12-19 07:36:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113124 states, 92562 states have (on average 1.5727188263002096) internal successors, (145574), 93154 states have internal predecessors, (145574), 18640 states have call successors, (18640), 1921 states have call predecessors, (18640), 1921 states have return successors, (18640), 18048 states have call predecessors, (18640), 18640 states have call successors, (18640) [2023-12-19 07:36:27,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113124 states to 113124 states and 182854 transitions. [2023-12-19 07:36:27,345 INFO L78 Accepts]: Start accepts. Automaton has 113124 states and 182854 transitions. Word has length 634 [2023-12-19 07:36:27,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:27,346 INFO L495 AbstractCegarLoop]: Abstraction has 113124 states and 182854 transitions. [2023-12-19 07:36:27,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.636363636363637) internal successors, (168), 21 states have internal predecessors, (168), 5 states have call successors, (98), 5 states have call predecessors, (98), 8 states have return successors, (98), 5 states have call predecessors, (98), 5 states have call successors, (98) [2023-12-19 07:36:27,346 INFO L276 IsEmpty]: Start isEmpty. Operand 113124 states and 182854 transitions. [2023-12-19 07:36:27,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2023-12-19 07:36:27,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:27,445 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:36:27,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 07:36:27,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 07:36:27,657 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:27,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:27,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1408492973, now seen corresponding path program 1 times [2023-12-19 07:36:27,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:27,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281839512] [2023-12-19 07:36:27,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:27,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:27,730 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:27,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908734527] [2023-12-19 07:36:27,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:27,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:27,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:27,732 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:36:27,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 07:36:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:28,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-19 07:36:28,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 12418 proven. 552 refuted. 0 times theorem prover too weak. 6042 trivial. 0 not checked. [2023-12-19 07:36:31,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:37:24,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:24,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281839512] [2023-12-19 07:37:24,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:37:24,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908734527] [2023-12-19 07:37:24,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908734527] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 07:37:24,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 07:37:24,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-12-19 07:37:24,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442460181] [2023-12-19 07:37:24,580 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 07:37:24,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 07:37:24,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:24,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 07:37:24,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=873, Unknown=9, NotChecked=0, Total=1056 [2023-12-19 07:37:24,585 INFO L87 Difference]: Start difference. First operand 113124 states and 182854 transitions. Second operand has 23 states, 23 states have (on average 7.304347826086956) internal successors, (168), 22 states have internal predecessors, (168), 5 states have call successors, (98), 5 states have call predecessors, (98), 8 states have return successors, (98), 5 states have call predecessors, (98), 5 states have call successors, (98) [2023-12-19 07:38:25,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:38:25,643 INFO L93 Difference]: Finished difference Result 396426 states and 642713 transitions. [2023-12-19 07:38:25,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-19 07:38:25,644 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.304347826086956) internal successors, (168), 22 states have internal predecessors, (168), 5 states have call successors, (98), 5 states have call predecessors, (98), 8 states have return successors, (98), 5 states have call predecessors, (98), 5 states have call successors, (98) Word has length 634 [2023-12-19 07:38:25,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:38:26,785 INFO L225 Difference]: With dead ends: 396426 [2023-12-19 07:38:26,786 INFO L226 Difference]: Without dead ends: 283418 [2023-12-19 07:38:27,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 696 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 48.9s TimeCoverageRelationStatistics Valid=1141, Invalid=3680, Unknown=9, NotChecked=0, Total=4830 [2023-12-19 07:38:27,020 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 4885 mSDsluCounter, 3643 mSDsCounter, 0 mSdLazyCounter, 4458 mSolverCounterSat, 1386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4963 SdHoareTripleChecker+Valid, 4053 SdHoareTripleChecker+Invalid, 5844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1386 IncrementalHoareTripleChecker+Valid, 4458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:38:27,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4963 Valid, 4053 Invalid, 5844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1386 Valid, 4458 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-12-19 07:38:27,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283418 states.