/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-64.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:21:06,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:21:06,119 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:21:06,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:21:06,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:21:06,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:21:06,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:21:06,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:21:06,146 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:21:06,149 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:21:06,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:21:06,149 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:21:06,150 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:21:06,151 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:21:06,151 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:21:06,151 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:21:06,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:21:06,151 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:21:06,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:21:06,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:21:06,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:21:06,152 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:21:06,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:21:06,152 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:21:06,152 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:21:06,153 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:21:06,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:21:06,153 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:21:06,153 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:21:06,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:21:06,154 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:21:06,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:21:06,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:21:06,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:21:06,155 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:21:06,155 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:21:06,155 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:21:06,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:21:06,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:21:06,155 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:21:06,155 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:21:06,155 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:21:06,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:21:06,156 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:21:06,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:21:06,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:21:06,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:21:06,371 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:21:06,372 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:21:06,372 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-64.i [2023-12-15 21:21:07,384 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:21:07,594 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:21:07,594 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-64.i [2023-12-15 21:21:07,606 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efc9fc23b/0030393eab7c4bbe99fa7fe544a13530/FLAG0902cfc9f [2023-12-15 21:21:07,616 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efc9fc23b/0030393eab7c4bbe99fa7fe544a13530 [2023-12-15 21:21:07,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:21:07,619 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:21:07,619 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:21:07,619 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:21:07,625 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:21:07,626 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:21:07" (1/1) ... [2023-12-15 21:21:07,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22eaa559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:07, skipping insertion in model container [2023-12-15 21:21:07,627 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:21:07" (1/1) ... [2023-12-15 21:21:07,673 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:21:07,783 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-64.i[916,929] [2023-12-15 21:21:07,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:21:08,005 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:21:08,019 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-64.i[916,929] [2023-12-15 21:21:08,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:21:08,133 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:21:08,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:08 WrapperNode [2023-12-15 21:21:08,133 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:21:08,134 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:21:08,134 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:21:08,134 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:21:08,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:08" (1/1) ... [2023-12-15 21:21:08,169 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:08" (1/1) ... [2023-12-15 21:21:08,285 INFO L138 Inliner]: procedures = 26, calls = 78, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 698 [2023-12-15 21:21:08,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:21:08,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:21:08,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:21:08,287 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:21:08,294 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:08" (1/1) ... [2023-12-15 21:21:08,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:08" (1/1) ... [2023-12-15 21:21:08,310 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:08" (1/1) ... [2023-12-15 21:21:08,361 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 21:21:08,362 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:08" (1/1) ... [2023-12-15 21:21:08,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:08" (1/1) ... [2023-12-15 21:21:08,402 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:08" (1/1) ... [2023-12-15 21:21:08,406 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:08" (1/1) ... [2023-12-15 21:21:08,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:08" (1/1) ... [2023-12-15 21:21:08,426 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:08" (1/1) ... [2023-12-15 21:21:08,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:21:08,450 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:21:08,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:21:08,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:21:08,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:08" (1/1) ... [2023-12-15 21:21:08,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:21:08,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:08,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:21:08,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:21:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:21:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:21:08,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:21:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:21:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:21:08,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:21:08,646 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:21:08,648 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:21:09,920 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:21:09,965 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:21:09,965 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:21:09,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:21:09 BoogieIcfgContainer [2023-12-15 21:21:09,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:21:09,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:21:09,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:21:09,970 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:21:09,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:21:07" (1/3) ... [2023-12-15 21:21:09,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290823d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:21:09, skipping insertion in model container [2023-12-15 21:21:09,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:21:08" (2/3) ... [2023-12-15 21:21:09,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290823d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:21:09, skipping insertion in model container [2023-12-15 21:21:09,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:21:09" (3/3) ... [2023-12-15 21:21:09,972 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-64.i [2023-12-15 21:21:09,984 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:21:09,984 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:21:10,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:21:10,031 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;@36d9eb5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:21:10,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:21:10,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 187 states have (on average 1.641711229946524) internal successors, (307), 188 states have internal predecessors, (307), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-15 21:21:10,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2023-12-15 21:21:10,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:10,062 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:10,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:10,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:10,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1194537214, now seen corresponding path program 1 times [2023-12-15 21:21:10,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:10,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546462739] [2023-12-15 21:21:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:10,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:10,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:10,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546462739] [2023-12-15 21:21:10,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:21:10,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003997705] [2023-12-15 21:21:10,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:10,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:10,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:10,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:21:10,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:21:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:10,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:21:10,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:10,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2023-12-15 21:21:10,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:10,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003997705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:10,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:10,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:21:10,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739109718] [2023-12-15 21:21:10,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:10,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:21:10,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:10,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:21:10,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:21:10,808 INFO L87 Difference]: Start difference. First operand has 255 states, 187 states have (on average 1.641711229946524) internal successors, (307), 188 states have internal predecessors, (307), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-15 21:21:10,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:10,877 INFO L93 Difference]: Finished difference Result 505 states and 933 transitions. [2023-12-15 21:21:10,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:21:10,880 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) Word has length 430 [2023-12-15 21:21:10,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:10,890 INFO L225 Difference]: With dead ends: 505 [2023-12-15 21:21:10,890 INFO L226 Difference]: Without dead ends: 251 [2023-12-15 21:21:10,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:21:10,898 INFO L413 NwaCegarLoop]: 423 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, 423 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:10,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 423 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:21:10,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-15 21:21:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2023-12-15 21:21:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 184 states have (on average 1.608695652173913) internal successors, (296), 184 states have internal predecessors, (296), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-15 21:21:10,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 426 transitions. [2023-12-15 21:21:10,959 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 426 transitions. Word has length 430 [2023-12-15 21:21:10,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:10,960 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 426 transitions. [2023-12-15 21:21:10,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-15 21:21:10,961 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 426 transitions. [2023-12-15 21:21:10,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2023-12-15 21:21:10,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:10,971 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:10,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 21:21:11,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 21:21:11,181 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:11,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:11,182 INFO L85 PathProgramCache]: Analyzing trace with hash 248356148, now seen corresponding path program 1 times [2023-12-15 21:21:11,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:11,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509663711] [2023-12-15 21:21:11,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:11,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:11,282 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:11,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463273593] [2023-12-15 21:21:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:11,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:11,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:11,284 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:21:11,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:21:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:11,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:21:11,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-15 21:21:11,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:11,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:11,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509663711] [2023-12-15 21:21:11,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:11,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463273593] [2023-12-15 21:21:11,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463273593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:11,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:11,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:21:11,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228519055] [2023-12-15 21:21:11,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:11,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:21:11,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:21:11,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:21:11,612 INFO L87 Difference]: Start difference. First operand 251 states and 426 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:21:11,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:11,715 INFO L93 Difference]: Finished difference Result 729 states and 1239 transitions. [2023-12-15 21:21:11,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:21:11,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 430 [2023-12-15 21:21:11,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:11,721 INFO L225 Difference]: With dead ends: 729 [2023-12-15 21:21:11,721 INFO L226 Difference]: Without dead ends: 479 [2023-12-15 21:21:11,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:21:11,724 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 378 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:11,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 1034 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:21:11,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-12-15 21:21:11,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 280. [2023-12-15 21:21:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 213 states have (on average 1.6384976525821595) internal successors, (349), 213 states have internal predecessors, (349), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-15 21:21:11,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 479 transitions. [2023-12-15 21:21:11,758 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 479 transitions. Word has length 430 [2023-12-15 21:21:11,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:11,760 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 479 transitions. [2023-12-15 21:21:11,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:21:11,761 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 479 transitions. [2023-12-15 21:21:11,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2023-12-15 21:21:11,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:11,764 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:11,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:21:11,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 21:21:11,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:11,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:11,986 INFO L85 PathProgramCache]: Analyzing trace with hash -781003150, now seen corresponding path program 1 times [2023-12-15 21:21:11,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:11,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95936300] [2023-12-15 21:21:11,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:11,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:12,060 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:12,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966135865] [2023-12-15 21:21:12,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:12,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:12,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:12,066 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:21:12,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:21:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:12,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:21:12,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3952 proven. 120 refuted. 0 times theorem prover too weak. 4248 trivial. 0 not checked. [2023-12-15 21:21:12,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 72 proven. 120 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-15 21:21:12,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:12,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95936300] [2023-12-15 21:21:12,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:12,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966135865] [2023-12-15 21:21:12,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966135865] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:12,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:12,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:21:12,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575793598] [2023-12-15 21:21:12,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:12,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:21:12,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:12,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:21:12,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:21:12,859 INFO L87 Difference]: Start difference. First operand 280 states and 479 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2023-12-15 21:21:13,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:13,367 INFO L93 Difference]: Finished difference Result 599 states and 1015 transitions. [2023-12-15 21:21:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:21:13,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) Word has length 430 [2023-12-15 21:21:13,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:13,369 INFO L225 Difference]: With dead ends: 599 [2023-12-15 21:21:13,370 INFO L226 Difference]: Without dead ends: 320 [2023-12-15 21:21:13,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 852 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:21:13,371 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 267 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:13,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 1022 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:21:13,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-12-15 21:21:13,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 315. [2023-12-15 21:21:13,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 223 states have (on average 1.5739910313901346) internal successors, (351), 224 states have internal predecessors, (351), 89 states have call successors, (89), 2 states have call predecessors, (89), 2 states have return successors, (89), 88 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-15 21:21:13,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 529 transitions. [2023-12-15 21:21:13,385 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 529 transitions. Word has length 430 [2023-12-15 21:21:13,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:13,386 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 529 transitions. [2023-12-15 21:21:13,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2023-12-15 21:21:13,386 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 529 transitions. [2023-12-15 21:21:13,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-12-15 21:21:13,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:13,389 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:13,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:21:13,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:13,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:13,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:13,598 INFO L85 PathProgramCache]: Analyzing trace with hash 980810183, now seen corresponding path program 1 times [2023-12-15 21:21:13,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:13,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332022695] [2023-12-15 21:21:13,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:13,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:13,652 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:13,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210597610] [2023-12-15 21:21:13,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:13,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:13,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:13,670 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:21:13,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:21:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:13,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:21:13,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-15 21:21:14,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:14,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:14,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332022695] [2023-12-15 21:21:14,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:14,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210597610] [2023-12-15 21:21:14,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210597610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:14,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:14,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:21:14,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627079970] [2023-12-15 21:21:14,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:14,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:21:14,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:21:14,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:21:14,336 INFO L87 Difference]: Start difference. First operand 315 states and 529 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:21:14,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:14,993 INFO L93 Difference]: Finished difference Result 1105 states and 1852 transitions. [2023-12-15 21:21:14,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:21:14,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 431 [2023-12-15 21:21:14,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:14,998 INFO L225 Difference]: With dead ends: 1105 [2023-12-15 21:21:14,998 INFO L226 Difference]: Without dead ends: 829 [2023-12-15 21:21:14,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:21:14,999 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 1544 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:15,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 1657 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:21:15,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-12-15 21:21:15,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 781. [2023-12-15 21:21:15,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 580 states have (on average 1.5775862068965518) internal successors, (915), 584 states have internal predecessors, (915), 194 states have call successors, (194), 6 states have call predecessors, (194), 6 states have return successors, (194), 190 states have call predecessors, (194), 194 states have call successors, (194) [2023-12-15 21:21:15,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1303 transitions. [2023-12-15 21:21:15,061 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1303 transitions. Word has length 431 [2023-12-15 21:21:15,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:15,062 INFO L495 AbstractCegarLoop]: Abstraction has 781 states and 1303 transitions. [2023-12-15 21:21:15,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:21:15,063 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1303 transitions. [2023-12-15 21:21:15,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-12-15 21:21:15,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:15,067 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:15,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:21:15,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:15,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:15,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:15,274 INFO L85 PathProgramCache]: Analyzing trace with hash -48549115, now seen corresponding path program 1 times [2023-12-15 21:21:15,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:15,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317659484] [2023-12-15 21:21:15,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:15,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:15,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:15,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367126197] [2023-12-15 21:21:15,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:15,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:15,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:15,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:21:15,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:21:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:15,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:21:15,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-15 21:21:15,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:15,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:15,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317659484] [2023-12-15 21:21:15,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:15,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367126197] [2023-12-15 21:21:15,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367126197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:15,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:15,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:21:15,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800906407] [2023-12-15 21:21:15,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:15,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:21:15,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:15,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:21:15,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:21:15,638 INFO L87 Difference]: Start difference. First operand 781 states and 1303 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:21:16,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:16,017 INFO L93 Difference]: Finished difference Result 2265 states and 3767 transitions. [2023-12-15 21:21:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:21:16,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 431 [2023-12-15 21:21:16,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:16,056 INFO L225 Difference]: With dead ends: 2265 [2023-12-15 21:21:16,056 INFO L226 Difference]: Without dead ends: 1523 [2023-12-15 21:21:16,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:21:16,060 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 784 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:16,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 997 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:21:16,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2023-12-15 21:21:16,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 977. [2023-12-15 21:21:16,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 774 states have (on average 1.6175710594315245) internal successors, (1252), 778 states have internal predecessors, (1252), 194 states have call successors, (194), 8 states have call predecessors, (194), 8 states have return successors, (194), 190 states have call predecessors, (194), 194 states have call successors, (194) [2023-12-15 21:21:16,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1640 transitions. [2023-12-15 21:21:16,152 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1640 transitions. Word has length 431 [2023-12-15 21:21:16,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:16,154 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1640 transitions. [2023-12-15 21:21:16,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:21:16,154 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1640 transitions. [2023-12-15 21:21:16,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-12-15 21:21:16,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:16,158 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:16,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 21:21:16,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:16,367 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:16,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:16,367 INFO L85 PathProgramCache]: Analyzing trace with hash 395351559, now seen corresponding path program 1 times [2023-12-15 21:21:16,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:16,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491416510] [2023-12-15 21:21:16,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:16,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:16,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:16,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [641462463] [2023-12-15 21:21:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:16,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:16,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:16,413 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:21:16,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:21:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:16,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:21:16,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-15 21:21:16,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:16,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:16,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491416510] [2023-12-15 21:21:16,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:16,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641462463] [2023-12-15 21:21:16,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641462463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:16,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:16,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:21:16,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156572117] [2023-12-15 21:21:16,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:16,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:21:16,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:16,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:21:16,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:21:16,741 INFO L87 Difference]: Start difference. First operand 977 states and 1640 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:21:16,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:16,816 INFO L93 Difference]: Finished difference Result 2271 states and 3818 transitions. [2023-12-15 21:21:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:21:16,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 431 [2023-12-15 21:21:16,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:16,822 INFO L225 Difference]: With dead ends: 2271 [2023-12-15 21:21:16,822 INFO L226 Difference]: Without dead ends: 1161 [2023-12-15 21:21:16,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:21:16,826 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 223 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:16,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 923 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:21:16,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2023-12-15 21:21:16,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 947. [2023-12-15 21:21:16,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 743 states have (on average 1.6056527590847913) internal successors, (1193), 747 states have internal predecessors, (1193), 194 states have call successors, (194), 9 states have call predecessors, (194), 9 states have return successors, (194), 190 states have call predecessors, (194), 194 states have call successors, (194) [2023-12-15 21:21:16,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1581 transitions. [2023-12-15 21:21:16,881 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1581 transitions. Word has length 431 [2023-12-15 21:21:16,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:16,881 INFO L495 AbstractCegarLoop]: Abstraction has 947 states and 1581 transitions. [2023-12-15 21:21:16,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:21:16,882 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1581 transitions. [2023-12-15 21:21:16,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-12-15 21:21:16,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:16,884 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:16,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:21:17,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:17,093 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:17,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:17,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1572976455, now seen corresponding path program 1 times [2023-12-15 21:21:17,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:17,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945580426] [2023-12-15 21:21:17,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:17,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:17,134 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:17,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001612206] [2023-12-15 21:21:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:17,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:17,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:17,135 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:21:17,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:21:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:17,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:21:17,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:17,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4068 proven. 114 refuted. 0 times theorem prover too weak. 4138 trivial. 0 not checked. [2023-12-15 21:21:17,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 78 proven. 114 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-15 21:21:17,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:17,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945580426] [2023-12-15 21:21:17,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:17,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001612206] [2023-12-15 21:21:17,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001612206] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:17,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:17,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:21:17,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428659367] [2023-12-15 21:21:17,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:17,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:21:17,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:17,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:21:17,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:21:17,987 INFO L87 Difference]: Start difference. First operand 947 states and 1581 transitions. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2023-12-15 21:21:18,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:18,398 INFO L93 Difference]: Finished difference Result 1877 states and 3121 transitions. [2023-12-15 21:21:18,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:21:18,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 432 [2023-12-15 21:21:18,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:18,403 INFO L225 Difference]: With dead ends: 1877 [2023-12-15 21:21:18,403 INFO L226 Difference]: Without dead ends: 973 [2023-12-15 21:21:18,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 856 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:21:18,405 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 550 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:18,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 932 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:21:18,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2023-12-15 21:21:18,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 962. [2023-12-15 21:21:18,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 753 states have (on average 1.5790172642762283) internal successors, (1189), 757 states have internal predecessors, (1189), 196 states have call successors, (196), 12 states have call predecessors, (196), 12 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-15 21:21:18,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1581 transitions. [2023-12-15 21:21:18,451 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1581 transitions. Word has length 432 [2023-12-15 21:21:18,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:18,451 INFO L495 AbstractCegarLoop]: Abstraction has 962 states and 1581 transitions. [2023-12-15 21:21:18,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2023-12-15 21:21:18,451 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1581 transitions. [2023-12-15 21:21:18,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-15 21:21:18,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:18,454 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:18,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:21:18,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:18,662 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:18,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:18,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1141101104, now seen corresponding path program 1 times [2023-12-15 21:21:18,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:18,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478451544] [2023-12-15 21:21:18,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:18,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:18,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:18,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1306428482] [2023-12-15 21:21:18,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:18,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:18,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:18,701 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:21:18,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:21:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:19,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:21:19,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-15 21:21:19,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:19,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:19,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478451544] [2023-12-15 21:21:19,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:19,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306428482] [2023-12-15 21:21:19,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306428482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:19,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:19,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:21:19,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562873376] [2023-12-15 21:21:19,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:19,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:21:19,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:19,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:21:19,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:21:19,386 INFO L87 Difference]: Start difference. First operand 962 states and 1581 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:21:19,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:19,603 INFO L93 Difference]: Finished difference Result 1874 states and 3088 transitions. [2023-12-15 21:21:19,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:21:19,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 433 [2023-12-15 21:21:19,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:19,608 INFO L225 Difference]: With dead ends: 1874 [2023-12-15 21:21:19,608 INFO L226 Difference]: Without dead ends: 962 [2023-12-15 21:21:19,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:21:19,610 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 526 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:19,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 402 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:21:19,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2023-12-15 21:21:19,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 962. [2023-12-15 21:21:19,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 753 states have (on average 1.5776892430278884) internal successors, (1188), 757 states have internal predecessors, (1188), 196 states have call successors, (196), 12 states have call predecessors, (196), 12 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-15 21:21:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1580 transitions. [2023-12-15 21:21:19,658 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1580 transitions. Word has length 433 [2023-12-15 21:21:19,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:19,659 INFO L495 AbstractCegarLoop]: Abstraction has 962 states and 1580 transitions. [2023-12-15 21:21:19,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:21:19,659 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1580 transitions. [2023-12-15 21:21:19,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-15 21:21:19,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:19,661 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:19,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 21:21:19,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 21:21:19,869 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:19,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:19,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1633727278, now seen corresponding path program 1 times [2023-12-15 21:21:19,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:19,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462044622] [2023-12-15 21:21:19,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:19,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:19,909 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:19,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584397789] [2023-12-15 21:21:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:19,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:19,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:19,910 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:21:19,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:21:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:20,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:21:20,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4182 proven. 105 refuted. 0 times theorem prover too weak. 4033 trivial. 0 not checked. [2023-12-15 21:21:20,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 87 proven. 105 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-15 21:21:20,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:20,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462044622] [2023-12-15 21:21:20,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:20,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584397789] [2023-12-15 21:21:20,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584397789] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:20,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:20,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:21:20,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228972058] [2023-12-15 21:21:20,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:20,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:21:20,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:20,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:21:20,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:21:20,661 INFO L87 Difference]: Start difference. First operand 962 states and 1580 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 2 states have call successors, (100), 2 states have call predecessors, (100), 4 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2023-12-15 21:21:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:20,991 INFO L93 Difference]: Finished difference Result 1881 states and 3080 transitions. [2023-12-15 21:21:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:21:20,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 2 states have call successors, (100), 2 states have call predecessors, (100), 4 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) Word has length 433 [2023-12-15 21:21:20,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:20,996 INFO L225 Difference]: With dead ends: 1881 [2023-12-15 21:21:20,996 INFO L226 Difference]: Without dead ends: 969 [2023-12-15 21:21:20,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 858 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:21:21,000 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 274 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:21,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 831 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:21:21,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-12-15 21:21:21,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 955. [2023-12-15 21:21:21,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 744 states have (on average 1.5564516129032258) internal successors, (1158), 748 states have internal predecessors, (1158), 196 states have call successors, (196), 14 states have call predecessors, (196), 14 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-15 21:21:21,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1550 transitions. [2023-12-15 21:21:21,064 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1550 transitions. Word has length 433 [2023-12-15 21:21:21,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:21,065 INFO L495 AbstractCegarLoop]: Abstraction has 955 states and 1550 transitions. [2023-12-15 21:21:21,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 2 states have call successors, (100), 2 states have call predecessors, (100), 4 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2023-12-15 21:21:21,065 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1550 transitions. [2023-12-15 21:21:21,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-15 21:21:21,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:21,068 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:21,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 21:21:21,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:21,277 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:21,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:21,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1688120176, now seen corresponding path program 1 times [2023-12-15 21:21:21,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:21,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384329529] [2023-12-15 21:21:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:21,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:21,313 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:21,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720117463] [2023-12-15 21:21:21,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:21,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:21,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:21,315 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:21:21,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:21:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:21,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:21:21,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 1872 proven. 168 refuted. 0 times theorem prover too weak. 6280 trivial. 0 not checked. [2023-12-15 21:21:22,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 24 proven. 168 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-15 21:21:22,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:22,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384329529] [2023-12-15 21:21:22,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:22,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720117463] [2023-12-15 21:21:22,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720117463] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:22,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:22,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-15 21:21:22,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25686027] [2023-12-15 21:21:22,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:22,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:21:22,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:22,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:21:22,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:21:22,450 INFO L87 Difference]: Start difference. First operand 955 states and 1550 transitions. Second operand has 12 states, 12 states have (on average 16.166666666666668) internal successors, (194), 12 states have internal predecessors, (194), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) [2023-12-15 21:21:23,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:23,412 INFO L93 Difference]: Finished difference Result 2723 states and 4375 transitions. [2023-12-15 21:21:23,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 21:21:23,413 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.166666666666668) internal successors, (194), 12 states have internal predecessors, (194), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) Word has length 433 [2023-12-15 21:21:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:23,419 INFO L225 Difference]: With dead ends: 2723 [2023-12-15 21:21:23,419 INFO L226 Difference]: Without dead ends: 1818 [2023-12-15 21:21:23,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 855 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=152, Invalid=354, Unknown=0, NotChecked=0, Total=506 [2023-12-15 21:21:23,422 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 959 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:23,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 1963 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 21:21:23,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2023-12-15 21:21:23,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1065. [2023-12-15 21:21:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 849 states have (on average 1.5842167255594817) internal successors, (1345), 853 states have internal predecessors, (1345), 196 states have call successors, (196), 19 states have call predecessors, (196), 19 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-15 21:21:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1737 transitions. [2023-12-15 21:21:23,575 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1737 transitions. Word has length 433 [2023-12-15 21:21:23,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:23,576 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1737 transitions. [2023-12-15 21:21:23,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.166666666666668) internal successors, (194), 12 states have internal predecessors, (194), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) [2023-12-15 21:21:23,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1737 transitions. [2023-12-15 21:21:23,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-12-15 21:21:23,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:23,579 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:23,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:21:23,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 21:21:23,786 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:23,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:23,787 INFO L85 PathProgramCache]: Analyzing trace with hash -190881852, now seen corresponding path program 1 times [2023-12-15 21:21:23,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:23,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863485570] [2023-12-15 21:21:23,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:23,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:23,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:23,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84383245] [2023-12-15 21:21:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:23,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:23,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:23,824 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:21:23,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:21:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:24,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 21:21:24,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3602 proven. 297 refuted. 0 times theorem prover too weak. 4421 trivial. 0 not checked. [2023-12-15 21:21:25,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 81 proven. 300 refuted. 0 times theorem prover too weak. 7939 trivial. 0 not checked. [2023-12-15 21:21:25,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:25,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863485570] [2023-12-15 21:21:25,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:25,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84383245] [2023-12-15 21:21:25,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84383245] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:25,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:25,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-15 21:21:25,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977188743] [2023-12-15 21:21:25,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:25,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 21:21:25,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:25,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 21:21:25,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:21:25,551 INFO L87 Difference]: Start difference. First operand 1065 states and 1737 transitions. Second operand has 14 states, 14 states have (on average 13.5) internal successors, (189), 14 states have internal predecessors, (189), 5 states have call successors, (119), 3 states have call predecessors, (119), 7 states have return successors, (120), 5 states have call predecessors, (120), 5 states have call successors, (120) [2023-12-15 21:21:26,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:26,109 INFO L93 Difference]: Finished difference Result 2130 states and 3441 transitions. [2023-12-15 21:21:26,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 21:21:26,111 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.5) internal successors, (189), 14 states have internal predecessors, (189), 5 states have call successors, (119), 3 states have call predecessors, (119), 7 states have return successors, (120), 5 states have call predecessors, (120), 5 states have call successors, (120) Word has length 434 [2023-12-15 21:21:26,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:26,115 INFO L225 Difference]: With dead ends: 2130 [2023-12-15 21:21:26,115 INFO L226 Difference]: Without dead ends: 1119 [2023-12-15 21:21:26,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=240, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:21:26,117 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 836 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:26,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1286 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:21:26,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2023-12-15 21:21:26,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1105. [2023-12-15 21:21:26,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 879 states have (on average 1.5483503981797497) internal successors, (1361), 883 states have internal predecessors, (1361), 196 states have call successors, (196), 29 states have call predecessors, (196), 29 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-15 21:21:26,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1753 transitions. [2023-12-15 21:21:26,182 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1753 transitions. Word has length 434 [2023-12-15 21:21:26,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:26,183 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1753 transitions. [2023-12-15 21:21:26,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.5) internal successors, (189), 14 states have internal predecessors, (189), 5 states have call successors, (119), 3 states have call predecessors, (119), 7 states have return successors, (120), 5 states have call predecessors, (120), 5 states have call successors, (120) [2023-12-15 21:21:26,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1753 transitions. [2023-12-15 21:21:26,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-12-15 21:21:26,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:26,186 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:26,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:21:26,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 21:21:26,394 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:26,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:26,408 INFO L85 PathProgramCache]: Analyzing trace with hash 57264642, now seen corresponding path program 1 times [2023-12-15 21:21:26,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:26,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509589874] [2023-12-15 21:21:26,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:26,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:26,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:26,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793238783] [2023-12-15 21:21:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:26,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:26,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:26,473 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:21:26,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:21:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:26,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:21:26,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:27,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3232 proven. 48 refuted. 0 times theorem prover too weak. 5040 trivial. 0 not checked. [2023-12-15 21:21:27,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 144 proven. 48 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-15 21:21:27,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:27,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509589874] [2023-12-15 21:21:27,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:27,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793238783] [2023-12-15 21:21:27,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793238783] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:27,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:27,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-15 21:21:27,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207029788] [2023-12-15 21:21:27,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:27,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:21:27,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:27,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:21:27,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:21:27,324 INFO L87 Difference]: Start difference. First operand 1105 states and 1753 transitions. Second operand has 12 states, 12 states have (on average 14.833333333333334) internal successors, (178), 12 states have internal predecessors, (178), 3 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2023-12-15 21:21:28,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:28,695 INFO L93 Difference]: Finished difference Result 4018 states and 6225 transitions. [2023-12-15 21:21:28,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 21:21:28,696 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.833333333333334) internal successors, (178), 12 states have internal predecessors, (178), 3 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) Word has length 434 [2023-12-15 21:21:28,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:28,705 INFO L225 Difference]: With dead ends: 4018 [2023-12-15 21:21:28,705 INFO L226 Difference]: Without dead ends: 2975 [2023-12-15 21:21:28,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=258, Invalid=498, Unknown=0, NotChecked=0, Total=756 [2023-12-15 21:21:28,708 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1409 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:28,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 2107 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 21:21:28,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2023-12-15 21:21:28,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2064. [2023-12-15 21:21:28,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 1744 states have (on average 1.5676605504587156) internal successors, (2734), 1756 states have internal predecessors, (2734), 267 states have call successors, (267), 52 states have call predecessors, (267), 52 states have return successors, (267), 255 states have call predecessors, (267), 267 states have call successors, (267) [2023-12-15 21:21:28,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 3268 transitions. [2023-12-15 21:21:28,868 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 3268 transitions. Word has length 434 [2023-12-15 21:21:28,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:28,868 INFO L495 AbstractCegarLoop]: Abstraction has 2064 states and 3268 transitions. [2023-12-15 21:21:28,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.833333333333334) internal successors, (178), 12 states have internal predecessors, (178), 3 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2023-12-15 21:21:28,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 3268 transitions. [2023-12-15 21:21:28,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-12-15 21:21:28,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:28,875 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:28,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:21:29,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 21:21:29,082 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:29,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:29,083 INFO L85 PathProgramCache]: Analyzing trace with hash 933283648, now seen corresponding path program 1 times [2023-12-15 21:21:29,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:29,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169012143] [2023-12-15 21:21:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:29,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:29,126 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:29,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090729634] [2023-12-15 21:21:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:29,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:29,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:29,165 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:21:29,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:21:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:29,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 21:21:29,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:30,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-15 21:21:30,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:30,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:30,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169012143] [2023-12-15 21:21:30,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:30,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090729634] [2023-12-15 21:21:30,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090729634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:30,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:30,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:21:30,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170858372] [2023-12-15 21:21:30,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:30,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:21:30,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:30,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:21:30,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:21:30,902 INFO L87 Difference]: Start difference. First operand 2064 states and 3268 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:21:31,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:31,244 INFO L93 Difference]: Finished difference Result 5585 states and 8995 transitions. [2023-12-15 21:21:31,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:21:31,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 434 [2023-12-15 21:21:31,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:31,265 INFO L225 Difference]: With dead ends: 5585 [2023-12-15 21:21:31,265 INFO L226 Difference]: Without dead ends: 3583 [2023-12-15 21:21:31,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:21:31,269 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 287 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:31,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1147 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:21:31,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2023-12-15 21:21:31,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 2911. [2023-12-15 21:21:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2911 states, 2630 states have (on average 1.64106463878327) internal successors, (4316), 2637 states have internal predecessors, (4316), 238 states have call successors, (238), 42 states have call predecessors, (238), 42 states have return successors, (238), 231 states have call predecessors, (238), 238 states have call successors, (238) [2023-12-15 21:21:31,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 4792 transitions. [2023-12-15 21:21:31,477 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 4792 transitions. Word has length 434 [2023-12-15 21:21:31,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:31,478 INFO L495 AbstractCegarLoop]: Abstraction has 2911 states and 4792 transitions. [2023-12-15 21:21:31,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:21:31,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 4792 transitions. [2023-12-15 21:21:31,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-12-15 21:21:31,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:31,482 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:31,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:21:31,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 21:21:31,691 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:31,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:31,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1319864956, now seen corresponding path program 1 times [2023-12-15 21:21:31,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:31,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642543511] [2023-12-15 21:21:31,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:31,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:31,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:31,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650840896] [2023-12-15 21:21:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:31,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:31,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:31,729 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) [2023-12-15 21:21:31,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 21:21:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:32,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:21:32,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 5334 proven. 240 refuted. 0 times theorem prover too weak. 2746 trivial. 0 not checked. [2023-12-15 21:21:32,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 318 proven. 249 refuted. 0 times theorem prover too weak. 7753 trivial. 0 not checked. [2023-12-15 21:21:33,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:33,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642543511] [2023-12-15 21:21:33,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:33,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650840896] [2023-12-15 21:21:33,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650840896] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:33,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:33,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-15 21:21:33,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959861294] [2023-12-15 21:21:33,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:33,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-15 21:21:33,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:33,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-15 21:21:33,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:21:33,243 INFO L87 Difference]: Start difference. First operand 2911 states and 4792 transitions. Second operand has 20 states, 19 states have (on average 10.736842105263158) internal successors, (204), 18 states have internal predecessors, (204), 7 states have call successors, (99), 4 states have call predecessors, (99), 9 states have return successors, (100), 7 states have call predecessors, (100), 7 states have call successors, (100) [2023-12-15 21:21:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:34,003 INFO L93 Difference]: Finished difference Result 4243 states and 6972 transitions. [2023-12-15 21:21:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 21:21:34,009 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 10.736842105263158) internal successors, (204), 18 states have internal predecessors, (204), 7 states have call successors, (99), 4 states have call predecessors, (99), 9 states have return successors, (100), 7 states have call predecessors, (100), 7 states have call successors, (100) Word has length 435 [2023-12-15 21:21:34,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:34,017 INFO L225 Difference]: With dead ends: 4243 [2023-12-15 21:21:34,017 INFO L226 Difference]: Without dead ends: 2461 [2023-12-15 21:21:34,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 850 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=290, Invalid=580, Unknown=0, NotChecked=0, Total=870 [2023-12-15 21:21:34,020 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 830 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:34,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1460 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:21:34,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2023-12-15 21:21:34,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2445. [2023-12-15 21:21:34,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2445 states, 2240 states have (on average 1.6651785714285714) internal successors, (3730), 2243 states have internal predecessors, (3730), 170 states have call successors, (170), 34 states have call predecessors, (170), 34 states have return successors, (170), 167 states have call predecessors, (170), 170 states have call successors, (170) [2023-12-15 21:21:34,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2445 states to 2445 states and 4070 transitions. [2023-12-15 21:21:34,166 INFO L78 Accepts]: Start accepts. Automaton has 2445 states and 4070 transitions. Word has length 435 [2023-12-15 21:21:34,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:34,167 INFO L495 AbstractCegarLoop]: Abstraction has 2445 states and 4070 transitions. [2023-12-15 21:21:34,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 10.736842105263158) internal successors, (204), 18 states have internal predecessors, (204), 7 states have call successors, (99), 4 states have call predecessors, (99), 9 states have return successors, (100), 7 states have call predecessors, (100), 7 states have call successors, (100) [2023-12-15 21:21:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2445 states and 4070 transitions. [2023-12-15 21:21:34,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-15 21:21:34,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:34,171 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:34,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 21:21:34,379 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 [2023-12-15 21:21:34,380 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:34,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:34,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1306175224, now seen corresponding path program 1 times [2023-12-15 21:21:34,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:34,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861001643] [2023-12-15 21:21:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:34,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:34,444 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:34,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919034460] [2023-12-15 21:21:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:34,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:34,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:34,445 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) [2023-12-15 21:21:34,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 21:21:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:34,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 21:21:34,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4240 proven. 198 refuted. 0 times theorem prover too weak. 3882 trivial. 0 not checked. [2023-12-15 21:21:35,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:35,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-15 21:21:35,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:35,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861001643] [2023-12-15 21:21:35,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:35,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919034460] [2023-12-15 21:21:35,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919034460] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:21:35,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:21:35,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-12-15 21:21:35,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186718409] [2023-12-15 21:21:35,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:35,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:21:35,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:35,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:21:35,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:21:35,477 INFO L87 Difference]: Start difference. First operand 2445 states and 4070 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:21:36,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:36,045 INFO L93 Difference]: Finished difference Result 7230 states and 12032 transitions. [2023-12-15 21:21:36,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:21:36,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 436 [2023-12-15 21:21:36,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:36,070 INFO L225 Difference]: With dead ends: 7230 [2023-12-15 21:21:36,070 INFO L226 Difference]: Without dead ends: 5750 [2023-12-15 21:21:36,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 860 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:21:36,075 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 801 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:36,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 1231 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:21:36,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5750 states. [2023-12-15 21:21:36,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5750 to 5319. [2023-12-15 21:21:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 5010 states have (on average 1.6902195608782435) internal successors, (8468), 5017 states have internal predecessors, (8468), 254 states have call successors, (254), 54 states have call predecessors, (254), 54 states have return successors, (254), 247 states have call predecessors, (254), 254 states have call successors, (254) [2023-12-15 21:21:36,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 8976 transitions. [2023-12-15 21:21:36,321 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 8976 transitions. Word has length 436 [2023-12-15 21:21:36,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:36,321 INFO L495 AbstractCegarLoop]: Abstraction has 5319 states and 8976 transitions. [2023-12-15 21:21:36,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:21:36,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 8976 transitions. [2023-12-15 21:21:36,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-15 21:21:36,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:36,327 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:36,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-15 21:21:36,537 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 [2023-12-15 21:21:36,538 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:36,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:36,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1554321718, now seen corresponding path program 1 times [2023-12-15 21:21:36,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:36,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478144424] [2023-12-15 21:21:36,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:36,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:36,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:36,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279129551] [2023-12-15 21:21:36,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:36,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:36,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:36,608 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) [2023-12-15 21:21:36,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 21:21:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:37,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:21:37,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4993 proven. 222 refuted. 0 times theorem prover too weak. 3105 trivial. 0 not checked. [2023-12-15 21:21:37,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 192 proven. 189 refuted. 0 times theorem prover too weak. 7939 trivial. 0 not checked. [2023-12-15 21:21:38,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:38,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478144424] [2023-12-15 21:21:38,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:38,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279129551] [2023-12-15 21:21:38,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279129551] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:38,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:38,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2023-12-15 21:21:38,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305784385] [2023-12-15 21:21:38,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:38,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-15 21:21:38,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:38,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-15 21:21:38,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:21:38,127 INFO L87 Difference]: Start difference. First operand 5319 states and 8976 transitions. Second operand has 20 states, 19 states have (on average 10.631578947368421) internal successors, (202), 18 states have internal predecessors, (202), 7 states have call successors, (115), 4 states have call predecessors, (115), 8 states have return successors, (116), 7 states have call predecessors, (116), 7 states have call successors, (116) [2023-12-15 21:21:39,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:39,323 INFO L93 Difference]: Finished difference Result 16413 states and 27703 transitions. [2023-12-15 21:21:39,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 21:21:39,324 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 10.631578947368421) internal successors, (202), 18 states have internal predecessors, (202), 7 states have call successors, (115), 4 states have call predecessors, (115), 8 states have return successors, (116), 7 states have call predecessors, (116), 7 states have call successors, (116) Word has length 436 [2023-12-15 21:21:39,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:39,346 INFO L225 Difference]: With dead ends: 16413 [2023-12-15 21:21:39,347 INFO L226 Difference]: Without dead ends: 12255 [2023-12-15 21:21:39,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=344, Invalid=648, Unknown=0, NotChecked=0, Total=992 [2023-12-15 21:21:39,356 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1553 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:39,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 1891 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 21:21:39,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12255 states. [2023-12-15 21:21:39,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12255 to 5175. [2023-12-15 21:21:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 4895 states have (on average 1.687231869254341) internal successors, (8259), 4898 states have internal predecessors, (8259), 214 states have call successors, (214), 65 states have call predecessors, (214), 65 states have return successors, (214), 211 states have call predecessors, (214), 214 states have call successors, (214) [2023-12-15 21:21:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 8687 transitions. [2023-12-15 21:21:39,613 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 8687 transitions. Word has length 436 [2023-12-15 21:21:39,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:39,614 INFO L495 AbstractCegarLoop]: Abstraction has 5175 states and 8687 transitions. [2023-12-15 21:21:39,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 10.631578947368421) internal successors, (202), 18 states have internal predecessors, (202), 7 states have call successors, (115), 4 states have call predecessors, (115), 8 states have return successors, (116), 7 states have call predecessors, (116), 7 states have call successors, (116) [2023-12-15 21:21:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 8687 transitions. [2023-12-15 21:21:39,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-15 21:21:39,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:39,619 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:39,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 21:21:39,824 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 [2023-12-15 21:21:39,825 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:39,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:39,825 INFO L85 PathProgramCache]: Analyzing trace with hash -689661580, now seen corresponding path program 1 times [2023-12-15 21:21:39,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:39,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72771563] [2023-12-15 21:21:39,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:39,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:39,857 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:39,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928355288] [2023-12-15 21:21:39,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:39,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:39,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:39,858 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) [2023-12-15 21:21:39,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 21:21:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:40,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 21:21:40,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:42,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 2244 proven. 162 refuted. 0 times theorem prover too weak. 5914 trivial. 0 not checked. [2023-12-15 21:21:42,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 30 proven. 162 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-15 21:21:42,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:42,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72771563] [2023-12-15 21:21:42,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:42,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928355288] [2023-12-15 21:21:42,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928355288] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:42,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:42,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2023-12-15 21:21:42,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256715941] [2023-12-15 21:21:42,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:42,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-15 21:21:42,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:42,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-15 21:21:42,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:21:42,831 INFO L87 Difference]: Start difference. First operand 5175 states and 8687 transitions. Second operand has 20 states, 20 states have (on average 9.35) internal successors, (187), 20 states have internal predecessors, (187), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-12-15 21:21:45,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:45,396 INFO L93 Difference]: Finished difference Result 23925 states and 40549 transitions. [2023-12-15 21:21:45,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-15 21:21:45,396 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.35) internal successors, (187), 20 states have internal predecessors, (187), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) Word has length 436 [2023-12-15 21:21:45,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:45,429 INFO L225 Difference]: With dead ends: 23925 [2023-12-15 21:21:45,429 INFO L226 Difference]: Without dead ends: 19015 [2023-12-15 21:21:45,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 855 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=477, Invalid=1503, Unknown=0, NotChecked=0, Total=1980 [2023-12-15 21:21:45,441 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 3398 mSDsluCounter, 5403 mSDsCounter, 0 mSdLazyCounter, 2538 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3408 SdHoareTripleChecker+Valid, 5841 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 2538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:45,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3408 Valid, 5841 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 2538 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 21:21:45,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19015 states. [2023-12-15 21:21:45,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19015 to 8363. [2023-12-15 21:21:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8363 states, 7888 states have (on average 1.679259634888438) internal successors, (13246), 7894 states have internal predecessors, (13246), 363 states have call successors, (363), 111 states have call predecessors, (363), 111 states have return successors, (363), 357 states have call predecessors, (363), 363 states have call successors, (363) [2023-12-15 21:21:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8363 states to 8363 states and 13972 transitions. [2023-12-15 21:21:45,885 INFO L78 Accepts]: Start accepts. Automaton has 8363 states and 13972 transitions. Word has length 436 [2023-12-15 21:21:45,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:45,886 INFO L495 AbstractCegarLoop]: Abstraction has 8363 states and 13972 transitions. [2023-12-15 21:21:45,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.35) internal successors, (187), 20 states have internal predecessors, (187), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-12-15 21:21:45,886 INFO L276 IsEmpty]: Start isEmpty. Operand 8363 states and 13972 transitions. [2023-12-15 21:21:45,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-15 21:21:45,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:45,893 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:45,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 21:21:46,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 21:21:46,102 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:46,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:46,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1576719606, now seen corresponding path program 1 times [2023-12-15 21:21:46,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:46,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014392354] [2023-12-15 21:21:46,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:46,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:46,135 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:46,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530738990] [2023-12-15 21:21:46,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:46,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:46,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:46,137 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:21:46,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-15 21:21:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:46,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-15 21:21:46,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 5220 proven. 240 refuted. 0 times theorem prover too weak. 2860 trivial. 0 not checked. [2023-12-15 21:21:48,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 162 proven. 30 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-15 21:21:49,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:49,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014392354] [2023-12-15 21:21:49,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:49,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530738990] [2023-12-15 21:21:49,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530738990] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:49,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:49,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 10] total 29 [2023-12-15 21:21:49,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767409239] [2023-12-15 21:21:49,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:49,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-15 21:21:49,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:49,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-15 21:21:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2023-12-15 21:21:49,715 INFO L87 Difference]: Start difference. First operand 8363 states and 13972 transitions. Second operand has 29 states, 29 states have (on average 6.827586206896552) internal successors, (198), 27 states have internal predecessors, (198), 7 states have call successors, (130), 6 states have call predecessors, (130), 9 states have return successors, (130), 7 states have call predecessors, (130), 7 states have call successors, (130) [2023-12-15 21:22:06,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:22:06,750 INFO L93 Difference]: Finished difference Result 45489 states and 76062 transitions. [2023-12-15 21:22:06,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-15 21:22:06,751 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.827586206896552) internal successors, (198), 27 states have internal predecessors, (198), 7 states have call successors, (130), 6 states have call predecessors, (130), 9 states have return successors, (130), 7 states have call predecessors, (130), 7 states have call successors, (130) Word has length 436 [2023-12-15 21:22:06,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:22:06,806 INFO L225 Difference]: With dead ends: 45489 [2023-12-15 21:22:06,806 INFO L226 Difference]: Without dead ends: 38847 [2023-12-15 21:22:06,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 851 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3181 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=2049, Invalid=7457, Unknown=0, NotChecked=0, Total=9506 [2023-12-15 21:22:06,818 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 8001 mSDsluCounter, 5496 mSDsCounter, 0 mSdLazyCounter, 4851 mSolverCounterSat, 1459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8031 SdHoareTripleChecker+Valid, 5943 SdHoareTripleChecker+Invalid, 6310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1459 IncrementalHoareTripleChecker+Valid, 4851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:22:06,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8031 Valid, 5943 Invalid, 6310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1459 Valid, 4851 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-15 21:22:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38847 states. [2023-12-15 21:22:07,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38847 to 11632. [2023-12-15 21:22:07,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11632 states, 10954 states have (on average 1.6732700383421582) internal successors, (18329), 10963 states have internal predecessors, (18329), 512 states have call successors, (512), 165 states have call predecessors, (512), 165 states have return successors, (512), 503 states have call predecessors, (512), 512 states have call successors, (512) [2023-12-15 21:22:07,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11632 states to 11632 states and 19353 transitions. [2023-12-15 21:22:07,654 INFO L78 Accepts]: Start accepts. Automaton has 11632 states and 19353 transitions. Word has length 436 [2023-12-15 21:22:07,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:22:07,655 INFO L495 AbstractCegarLoop]: Abstraction has 11632 states and 19353 transitions. [2023-12-15 21:22:07,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.827586206896552) internal successors, (198), 27 states have internal predecessors, (198), 7 states have call successors, (130), 6 states have call predecessors, (130), 9 states have return successors, (130), 7 states have call predecessors, (130), 7 states have call successors, (130) [2023-12-15 21:22:07,655 INFO L276 IsEmpty]: Start isEmpty. Operand 11632 states and 19353 transitions. [2023-12-15 21:22:07,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-15 21:22:07,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:22:07,664 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:22:07,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-15 21:22:07,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 21:22:07,872 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:22:07,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:22:07,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2020620280, now seen corresponding path program 1 times [2023-12-15 21:22:07,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:22:07,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609159773] [2023-12-15 21:22:07,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:22:07,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:22:07,912 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:22:07,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284265998] [2023-12-15 21:22:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:22:07,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:22:07,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:22:07,914 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:22:07,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process Received shutdown request... [2023-12-15 21:22:09,270 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:22:09,273 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:22:10,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-15 21:22:10,470 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forcibly destroying the process [2023-12-15 21:22:10,474 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-15 21:22:10,476 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:22:10,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 137 [2023-12-15 21:22:10,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:22:10,479 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 437 with TraceHistMax 65,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-15 21:22:10,483 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:22:10,484 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:22:10,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:22:10 BoogieIcfgContainer [2023-12-15 21:22:10,485 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:22:10,486 INFO L158 Benchmark]: Toolchain (without parser) took 62867.10ms. Allocated memory was 233.8MB in the beginning and 1.1GB in the end (delta: 863.0MB). Free memory was 177.9MB in the beginning and 864.1MB in the end (delta: -686.1MB). Peak memory consumption was 176.4MB. Max. memory is 8.0GB. [2023-12-15 21:22:10,486 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 141.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:22:10,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 514.33ms. Allocated memory is still 233.8MB. Free memory was 177.9MB in the beginning and 138.6MB in the end (delta: 39.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-15 21:22:10,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 152.00ms. Allocated memory is still 233.8MB. Free memory was 138.6MB in the beginning and 175.3MB in the end (delta: -36.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 21:22:10,486 INFO L158 Benchmark]: Boogie Preprocessor took 162.93ms. Allocated memory is still 233.8MB. Free memory was 175.3MB in the beginning and 117.7MB in the end (delta: 57.7MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. [2023-12-15 21:22:10,486 INFO L158 Benchmark]: RCFGBuilder took 1515.62ms. Allocated memory is still 233.8MB. Free memory was 117.7MB in the beginning and 161.3MB in the end (delta: -43.6MB). Peak memory consumption was 34.0MB. Max. memory is 8.0GB. [2023-12-15 21:22:10,486 INFO L158 Benchmark]: TraceAbstraction took 60517.68ms. Allocated memory was 233.8MB in the beginning and 1.1GB in the end (delta: 863.0MB). Free memory was 160.2MB in the beginning and 864.1MB in the end (delta: -703.8MB). Peak memory consumption was 158.6MB. Max. memory is 8.0GB. [2023-12-15 21:22:10,487 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 141.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 514.33ms. Allocated memory is still 233.8MB. Free memory was 177.9MB in the beginning and 138.6MB in the end (delta: 39.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 152.00ms. Allocated memory is still 233.8MB. Free memory was 138.6MB in the beginning and 175.3MB in the end (delta: -36.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 162.93ms. Allocated memory is still 233.8MB. Free memory was 175.3MB in the beginning and 117.7MB in the end (delta: 57.7MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. * RCFGBuilder took 1515.62ms. Allocated memory is still 233.8MB. Free memory was 117.7MB in the beginning and 161.3MB in the end (delta: -43.6MB). Peak memory consumption was 34.0MB. Max. memory is 8.0GB. * TraceAbstraction took 60517.68ms. Allocated memory was 233.8MB in the beginning and 1.1GB in the end (delta: 863.0MB). Free memory was 160.2MB in the beginning and 864.1MB in the end (delta: -703.8MB). Peak memory consumption was 158.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 437 with TraceHistMax 65,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 255 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.5s, OverallIterations: 19, TraceHistogramMax: 65, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 28.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22890 SdHoareTripleChecker+Valid, 14.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22620 mSDsluCounter, 31090 SdHoareTripleChecker+Invalid, 12.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22886 mSDsCounter, 3816 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14877 IncrementalHoareTripleChecker+Invalid, 18693 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3816 mSolverCounterUnsat, 8204 mSDtfsCounter, 14877 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12726 GetRequests, 12405 SyntacticMatches, 3 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4260 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11632occurred in iteration=18, InterpolantAutomatonStates: 259, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 18 MinimizatonAttempts, 48781 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 14.7s InterpolantComputationTime, 8225 NumberOfCodeBlocks, 8225 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 12541 ConstructedInterpolants, 2 QuantifiedInterpolants, 48675 SizeOfPredicates, 79 NumberOfNonLiveVariables, 19768 ConjunctsInSsa, 194 ConjunctsInUnsatCore, 29 InterpolantComputations, 8 PerfectInterpolantSequences, 237881/241280 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown