/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:07:18,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:07:18,902 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:07:18,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:07:18,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:07:18,926 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:07:18,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:07:18,927 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:07:18,927 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:07:18,930 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:07:18,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:07:18,930 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:07:18,931 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:07:18,932 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:07:18,932 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:07:18,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:07:18,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:07:18,932 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:07:18,932 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:07:18,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:07:18,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:07:18,934 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:07:18,934 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:07:18,934 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:07:18,934 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:07:18,934 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:07:18,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:07:18,935 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:07:18,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:07:18,935 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:07:18,936 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:07:18,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:07:18,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:07:18,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:07:18,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:07:18,937 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:07:18,937 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:07:18,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:07:18,937 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:07:18,937 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:07:18,937 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:07:18,937 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:07:18,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:07:18,937 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:07:19,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:07:19,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:07:19,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:07:19,131 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:07:19,131 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:07:19,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-3.i [2023-12-16 04:07:20,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:07:20,615 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:07:20,616 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-3.i [2023-12-16 04:07:20,638 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b70c631/6c16a4c3d9bb46939cbbd4b7dba1b0bf/FLAGfa150bf4f [2023-12-16 04:07:20,655 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b70c631/6c16a4c3d9bb46939cbbd4b7dba1b0bf [2023-12-16 04:07:20,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:07:20,658 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:07:20,660 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:07:20,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:07:20,664 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:07:20,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:07:20" (1/1) ... [2023-12-16 04:07:20,665 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a74884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:07:20, skipping insertion in model container [2023-12-16 04:07:20,665 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:07:20" (1/1) ... [2023-12-16 04:07:20,712 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:07:20,831 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-3.i[915,928] [2023-12-16 04:07:21,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:07:21,049 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:07:21,063 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-3.i[915,928] [2023-12-16 04:07:21,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:07:21,151 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:07:21,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:07:21 WrapperNode [2023-12-16 04:07:21,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:07:21,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:07:21,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:07:21,153 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:07:21,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:07:21" (1/1) ... [2023-12-16 04:07:21,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:07:21" (1/1) ... [2023-12-16 04:07:21,270 INFO L138 Inliner]: procedures = 26, calls = 85, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 643 [2023-12-16 04:07:21,271 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:07:21,271 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:07:21,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:07:21,272 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:07:21,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:07:21" (1/1) ... [2023-12-16 04:07:21,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:07:21" (1/1) ... [2023-12-16 04:07:21,301 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:07:21" (1/1) ... [2023-12-16 04:07:21,351 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]. [2023-12-16 04:07:21,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:07:21" (1/1) ... [2023-12-16 04:07:21,352 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:07:21" (1/1) ... [2023-12-16 04:07:21,386 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:07:21" (1/1) ... [2023-12-16 04:07:21,391 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:07:21" (1/1) ... [2023-12-16 04:07:21,401 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:07:21" (1/1) ... [2023-12-16 04:07:21,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:07:21" (1/1) ... [2023-12-16 04:07:21,458 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:07:21,459 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:07:21,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:07:21,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:07:21,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:07:21" (1/1) ... [2023-12-16 04:07:21,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:07:21,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:21,498 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) [2023-12-16 04:07:21,511 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 [2023-12-16 04:07:21,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:07:21,518 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:07:21,518 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:07:21,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:07:21,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:07:21,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:07:21,660 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:07:21,664 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:07:22,354 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:07:22,401 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:07:22,401 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:07:22,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:07:22 BoogieIcfgContainer [2023-12-16 04:07:22,402 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:07:22,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:07:22,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:07:22,406 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:07:22,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:07:20" (1/3) ... [2023-12-16 04:07:22,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2bf216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:07:22, skipping insertion in model container [2023-12-16 04:07:22,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:07:21" (2/3) ... [2023-12-16 04:07:22,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2bf216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:07:22, skipping insertion in model container [2023-12-16 04:07:22,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:07:22" (3/3) ... [2023-12-16 04:07:22,409 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-3.i [2023-12-16 04:07:22,421 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:07:22,422 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:07:22,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:07:22,478 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;@24439d4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:07:22,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:07:22,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 164 states have (on average 1.5853658536585367) internal successors, (260), 165 states have internal predecessors, (260), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-16 04:07:22,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2023-12-16 04:07:22,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:22,521 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:22,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:22,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:22,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1296942363, now seen corresponding path program 1 times [2023-12-16 04:07:22,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399626325] [2023-12-16 04:07:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:22,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:22,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:22,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399626325] [2023-12-16 04:07:22,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 04:07:22,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978282746] [2023-12-16 04:07:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:22,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:22,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:22,860 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) [2023-12-16 04:07:22,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:07:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:23,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 04:07:23,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 10082 trivial. 0 not checked. [2023-12-16 04:07:23,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:07:23,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978282746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:07:23,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:07:23,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:07:23,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852000950] [2023-12-16 04:07:23,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:07:23,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:07:23,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:23,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:07:23,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:07:23,383 INFO L87 Difference]: Start difference. First operand has 239 states, 164 states have (on average 1.5853658536585367) internal successors, (260), 165 states have internal predecessors, (260), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 2 states have call successors, (72) [2023-12-16 04:07:23,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:23,435 INFO L93 Difference]: Finished difference Result 475 states and 878 transitions. [2023-12-16 04:07:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:07:23,439 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 2 states have call successors, (72) Word has length 472 [2023-12-16 04:07:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:23,448 INFO L225 Difference]: With dead ends: 475 [2023-12-16 04:07:23,448 INFO L226 Difference]: Without dead ends: 237 [2023-12-16 04:07:23,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:07:23,455 INFO L413 NwaCegarLoop]: 395 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, 395 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 [2023-12-16 04:07:23,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 395 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:07:23,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-16 04:07:23,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2023-12-16 04:07:23,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 163 states have (on average 1.5582822085889572) internal successors, (254), 163 states have internal predecessors, (254), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-16 04:07:23,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 398 transitions. [2023-12-16 04:07:23,510 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 398 transitions. Word has length 472 [2023-12-16 04:07:23,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:23,511 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 398 transitions. [2023-12-16 04:07:23,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 2 states have call successors, (72) [2023-12-16 04:07:23,511 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 398 transitions. [2023-12-16 04:07:23,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2023-12-16 04:07:23,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:23,525 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:23,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 04:07:23,732 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 [2023-12-16 04:07:23,735 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:23,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:23,735 INFO L85 PathProgramCache]: Analyzing trace with hash 885814841, now seen corresponding path program 1 times [2023-12-16 04:07:23,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:23,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876629040] [2023-12-16 04:07:23,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:23,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:23,829 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:23,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181806668] [2023-12-16 04:07:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:23,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:23,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:23,842 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) [2023-12-16 04:07:23,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:07:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:24,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:07:24,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:07:24,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:07:24,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:24,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876629040] [2023-12-16 04:07:24,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:24,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181806668] [2023-12-16 04:07:24,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181806668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:07:24,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:07:24,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:07:24,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751637356] [2023-12-16 04:07:24,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:07:24,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:07:24,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:24,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:07:24,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:07:24,192 INFO L87 Difference]: Start difference. First operand 237 states and 398 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:24,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:24,252 INFO L93 Difference]: Finished difference Result 473 states and 795 transitions. [2023-12-16 04:07:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:07:24,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 472 [2023-12-16 04:07:24,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:24,262 INFO L225 Difference]: With dead ends: 473 [2023-12-16 04:07:24,262 INFO L226 Difference]: Without dead ends: 237 [2023-12-16 04:07:24,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:07:24,264 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 126 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:24,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 658 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:07:24,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-16 04:07:24,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2023-12-16 04:07:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 163 states have (on average 1.5521472392638036) internal successors, (253), 163 states have internal predecessors, (253), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-16 04:07:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 397 transitions. [2023-12-16 04:07:24,290 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 397 transitions. Word has length 472 [2023-12-16 04:07:24,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:24,292 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 397 transitions. [2023-12-16 04:07:24,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:24,292 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 397 transitions. [2023-12-16 04:07:24,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2023-12-16 04:07:24,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:24,304 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:24,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:07:24,511 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 [2023-12-16 04:07:24,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:24,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash -7671497, now seen corresponding path program 1 times [2023-12-16 04:07:24,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:24,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359661191] [2023-12-16 04:07:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:24,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:24,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:24,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568973639] [2023-12-16 04:07:24,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:24,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:24,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:24,669 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) [2023-12-16 04:07:24,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:07:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:24,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:07:24,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:07:25,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:07:25,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:25,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359661191] [2023-12-16 04:07:25,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:25,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568973639] [2023-12-16 04:07:25,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568973639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:07:25,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:07:25,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:07:25,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189544147] [2023-12-16 04:07:25,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:07:25,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:07:25,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:25,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:07:25,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:07:25,030 INFO L87 Difference]: Start difference. First operand 237 states and 397 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:25,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:25,101 INFO L93 Difference]: Finished difference Result 582 states and 981 transitions. [2023-12-16 04:07:25,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:07:25,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 472 [2023-12-16 04:07:25,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:25,106 INFO L225 Difference]: With dead ends: 582 [2023-12-16 04:07:25,106 INFO L226 Difference]: Without dead ends: 346 [2023-12-16 04:07:25,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:07:25,107 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 194 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:25,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 952 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:07:25,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-12-16 04:07:25,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 240. [2023-12-16 04:07:25,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 166 states have (on average 1.5481927710843373) internal successors, (257), 166 states have internal predecessors, (257), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-16 04:07:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 401 transitions. [2023-12-16 04:07:25,134 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 401 transitions. Word has length 472 [2023-12-16 04:07:25,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:25,138 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 401 transitions. [2023-12-16 04:07:25,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:25,138 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 401 transitions. [2023-12-16 04:07:25,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2023-12-16 04:07:25,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:25,143 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:25,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 04:07:25,350 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 [2023-12-16 04:07:25,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:25,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:25,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1223825223, now seen corresponding path program 1 times [2023-12-16 04:07:25,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:25,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685154695] [2023-12-16 04:07:25,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:25,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:25,428 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:25,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416317829] [2023-12-16 04:07:25,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:25,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:25,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:25,440 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) [2023-12-16 04:07:25,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 04:07:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:25,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:07:25,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:07:26,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:07:26,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:26,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685154695] [2023-12-16 04:07:26,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:26,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416317829] [2023-12-16 04:07:26,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416317829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:07:26,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:07:26,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:07:26,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411270991] [2023-12-16 04:07:26,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:07:26,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:07:26,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:26,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:07:26,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:07:26,719 INFO L87 Difference]: Start difference. First operand 240 states and 401 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:27,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:27,196 INFO L93 Difference]: Finished difference Result 957 states and 1600 transitions. [2023-12-16 04:07:27,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:07:27,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 472 [2023-12-16 04:07:27,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:27,201 INFO L225 Difference]: With dead ends: 957 [2023-12-16 04:07:27,201 INFO L226 Difference]: Without dead ends: 718 [2023-12-16 04:07:27,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:07:27,202 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 586 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:27,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 1252 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:07:27,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2023-12-16 04:07:27,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 614. [2023-12-16 04:07:27,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 394 states have (on average 1.4898477157360406) internal successors, (587), 394 states have internal predecessors, (587), 216 states have call successors, (216), 3 states have call predecessors, (216), 3 states have return successors, (216), 216 states have call predecessors, (216), 216 states have call successors, (216) [2023-12-16 04:07:27,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1019 transitions. [2023-12-16 04:07:27,253 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1019 transitions. Word has length 472 [2023-12-16 04:07:27,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:27,254 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1019 transitions. [2023-12-16 04:07:27,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:27,254 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1019 transitions. [2023-12-16 04:07:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-12-16 04:07:27,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:27,257 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:27,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 04:07:27,464 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 [2023-12-16 04:07:27,465 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:27,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:27,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1163350470, now seen corresponding path program 1 times [2023-12-16 04:07:27,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:27,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913101959] [2023-12-16 04:07:27,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:27,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:27,505 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:27,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837845153] [2023-12-16 04:07:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:27,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:27,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:27,507 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) [2023-12-16 04:07:27,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 04:07:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:27,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:07:27,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:07:27,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:07:27,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:27,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913101959] [2023-12-16 04:07:27,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:27,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837845153] [2023-12-16 04:07:27,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837845153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:07:27,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:07:27,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:07:27,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64275876] [2023-12-16 04:07:27,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:07:27,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:07:27,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:27,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:07:27,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:07:27,860 INFO L87 Difference]: Start difference. First operand 614 states and 1019 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:27,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:27,921 INFO L93 Difference]: Finished difference Result 1562 states and 2604 transitions. [2023-12-16 04:07:27,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:07:27,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 473 [2023-12-16 04:07:27,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:27,926 INFO L225 Difference]: With dead ends: 1562 [2023-12-16 04:07:27,926 INFO L226 Difference]: Without dead ends: 1087 [2023-12-16 04:07:27,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:07:27,928 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 365 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:27,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1066 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:07:27,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2023-12-16 04:07:28,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1085. [2023-12-16 04:07:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 719 states have (on average 1.5090403337969402) internal successors, (1085), 719 states have internal predecessors, (1085), 360 states have call successors, (360), 5 states have call predecessors, (360), 5 states have return successors, (360), 360 states have call predecessors, (360), 360 states have call successors, (360) [2023-12-16 04:07:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1805 transitions. [2023-12-16 04:07:28,025 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1805 transitions. Word has length 473 [2023-12-16 04:07:28,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:28,028 INFO L495 AbstractCegarLoop]: Abstraction has 1085 states and 1805 transitions. [2023-12-16 04:07:28,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1805 transitions. [2023-12-16 04:07:28,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-12-16 04:07:28,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:28,031 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:28,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 04:07:28,245 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 [2023-12-16 04:07:28,246 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:28,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:28,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1822881992, now seen corresponding path program 1 times [2023-12-16 04:07:28,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:28,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480499488] [2023-12-16 04:07:28,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:28,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:28,285 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:28,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122398265] [2023-12-16 04:07:28,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:28,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:28,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:28,286 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) [2023-12-16 04:07:28,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 04:07:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:28,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:07:28,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:29,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:07:29,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:07:29,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:29,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480499488] [2023-12-16 04:07:29,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:29,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122398265] [2023-12-16 04:07:29,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122398265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:07:29,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:07:29,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:07:29,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893003779] [2023-12-16 04:07:29,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:07:29,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:07:29,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:29,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:07:29,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:07:29,512 INFO L87 Difference]: Start difference. First operand 1085 states and 1805 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:29,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:29,602 INFO L93 Difference]: Finished difference Result 2454 states and 4081 transitions. [2023-12-16 04:07:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:07:29,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 473 [2023-12-16 04:07:29,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:29,610 INFO L225 Difference]: With dead ends: 2454 [2023-12-16 04:07:29,610 INFO L226 Difference]: Without dead ends: 1508 [2023-12-16 04:07:29,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:07:29,613 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 152 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:29,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 881 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:07:29,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2023-12-16 04:07:29,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1504. [2023-12-16 04:07:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 992 states have (on average 1.5) internal successors, (1488), 992 states have internal predecessors, (1488), 504 states have call successors, (504), 7 states have call predecessors, (504), 7 states have return successors, (504), 504 states have call predecessors, (504), 504 states have call successors, (504) [2023-12-16 04:07:29,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2496 transitions. [2023-12-16 04:07:29,684 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2496 transitions. Word has length 473 [2023-12-16 04:07:29,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:29,685 INFO L495 AbstractCegarLoop]: Abstraction has 1504 states and 2496 transitions. [2023-12-16 04:07:29,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:29,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2496 transitions. [2023-12-16 04:07:29,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2023-12-16 04:07:29,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:29,688 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:29,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 04:07:29,895 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 [2023-12-16 04:07:29,896 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:29,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:29,896 INFO L85 PathProgramCache]: Analyzing trace with hash -177623440, now seen corresponding path program 1 times [2023-12-16 04:07:29,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:29,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519974340] [2023-12-16 04:07:29,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:29,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:29,933 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:29,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527032307] [2023-12-16 04:07:29,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:29,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:29,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:29,935 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) [2023-12-16 04:07:29,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 04:07:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:30,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 1183 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 04:07:30,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:07:30,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:07:30,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:30,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519974340] [2023-12-16 04:07:30,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:30,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527032307] [2023-12-16 04:07:30,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527032307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:07:30,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:07:30,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:07:30,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140241712] [2023-12-16 04:07:30,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:07:30,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:07:30,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:30,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:07:30,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:07:30,277 INFO L87 Difference]: Start difference. First operand 1504 states and 2496 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:30,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:30,819 INFO L93 Difference]: Finished difference Result 6525 states and 10806 transitions. [2023-12-16 04:07:30,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:07:30,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 474 [2023-12-16 04:07:30,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:30,840 INFO L225 Difference]: With dead ends: 6525 [2023-12-16 04:07:30,840 INFO L226 Difference]: Without dead ends: 5149 [2023-12-16 04:07:30,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:07:30,846 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1142 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:30,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1769 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:07:30,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5149 states. [2023-12-16 04:07:31,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5149 to 3535. [2023-12-16 04:07:31,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 2704 states have (on average 1.5824704142011834) internal successors, (4279), 2710 states have internal predecessors, (4279), 816 states have call successors, (816), 14 states have call predecessors, (816), 14 states have return successors, (816), 810 states have call predecessors, (816), 816 states have call successors, (816) [2023-12-16 04:07:31,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 5911 transitions. [2023-12-16 04:07:31,097 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 5911 transitions. Word has length 474 [2023-12-16 04:07:31,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:31,097 INFO L495 AbstractCegarLoop]: Abstraction has 3535 states and 5911 transitions. [2023-12-16 04:07:31,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 5911 transitions. [2023-12-16 04:07:31,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2023-12-16 04:07:31,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:31,101 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:31,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 04:07:31,306 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 [2023-12-16 04:07:31,307 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:31,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:31,308 INFO L85 PathProgramCache]: Analyzing trace with hash 776316718, now seen corresponding path program 1 times [2023-12-16 04:07:31,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:31,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867590534] [2023-12-16 04:07:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:31,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:31,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:31,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [312356628] [2023-12-16 04:07:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:31,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:31,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:31,375 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) [2023-12-16 04:07:31,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 04:07:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:31,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 04:07:31,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:31,730 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:07:31,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:07:31,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:31,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867590534] [2023-12-16 04:07:31,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:31,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312356628] [2023-12-16 04:07:31,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312356628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:07:31,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:07:31,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:07:31,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843668320] [2023-12-16 04:07:31,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:07:31,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:07:31,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:31,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:07:31,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:07:31,732 INFO L87 Difference]: Start difference. First operand 3535 states and 5911 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:32,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:32,360 INFO L93 Difference]: Finished difference Result 8859 states and 14742 transitions. [2023-12-16 04:07:32,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:07:32,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 474 [2023-12-16 04:07:32,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:32,390 INFO L225 Difference]: With dead ends: 8859 [2023-12-16 04:07:32,390 INFO L226 Difference]: Without dead ends: 6509 [2023-12-16 04:07:32,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:07:32,399 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 761 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:32,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1038 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:07:32,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6509 states. [2023-12-16 04:07:32,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6509 to 5485. [2023-12-16 04:07:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5485 states, 4009 states have (on average 1.5447742579196808) internal successors, (6193), 4025 states have internal predecessors, (6193), 1448 states have call successors, (1448), 27 states have call predecessors, (1448), 27 states have return successors, (1448), 1432 states have call predecessors, (1448), 1448 states have call successors, (1448) [2023-12-16 04:07:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 9089 transitions. [2023-12-16 04:07:32,743 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 9089 transitions. Word has length 474 [2023-12-16 04:07:32,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:32,744 INFO L495 AbstractCegarLoop]: Abstraction has 5485 states and 9089 transitions. [2023-12-16 04:07:32,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:32,754 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 9089 transitions. [2023-12-16 04:07:32,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2023-12-16 04:07:32,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:32,758 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:32,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 04:07:32,973 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 [2023-12-16 04:07:32,974 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:32,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:32,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2053232699, now seen corresponding path program 1 times [2023-12-16 04:07:32,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:32,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054673781] [2023-12-16 04:07:32,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:32,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:33,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:33,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529633475] [2023-12-16 04:07:33,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:33,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:33,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:33,021 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) [2023-12-16 04:07:33,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 04:07:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:33,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 1183 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:07:33,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:07:33,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:07:33,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:33,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054673781] [2023-12-16 04:07:33,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:33,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529633475] [2023-12-16 04:07:33,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529633475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:07:33,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:07:33,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:07:33,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373913447] [2023-12-16 04:07:33,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:07:33,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:07:33,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:33,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:07:33,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:07:33,368 INFO L87 Difference]: Start difference. First operand 5485 states and 9089 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:33,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:33,885 INFO L93 Difference]: Finished difference Result 14793 states and 24431 transitions. [2023-12-16 04:07:33,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:07:33,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 474 [2023-12-16 04:07:33,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:33,933 INFO L225 Difference]: With dead ends: 14793 [2023-12-16 04:07:33,933 INFO L226 Difference]: Without dead ends: 9495 [2023-12-16 04:07:33,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:07:33,946 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 497 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:33,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 1151 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:07:33,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9495 states. [2023-12-16 04:07:34,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9495 to 5485. [2023-12-16 04:07:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5485 states, 4009 states have (on average 1.540783237715141) internal successors, (6177), 4025 states have internal predecessors, (6177), 1448 states have call successors, (1448), 27 states have call predecessors, (1448), 27 states have return successors, (1448), 1432 states have call predecessors, (1448), 1448 states have call successors, (1448) [2023-12-16 04:07:34,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 9073 transitions. [2023-12-16 04:07:34,510 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 9073 transitions. Word has length 474 [2023-12-16 04:07:34,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:34,511 INFO L495 AbstractCegarLoop]: Abstraction has 5485 states and 9073 transitions. [2023-12-16 04:07:34,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:34,511 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 9073 transitions. [2023-12-16 04:07:34,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2023-12-16 04:07:34,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:34,516 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:34,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 04:07:34,723 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 [2023-12-16 04:07:34,723 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:34,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:34,724 INFO L85 PathProgramCache]: Analyzing trace with hash -854949187, now seen corresponding path program 1 times [2023-12-16 04:07:34,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:34,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789102674] [2023-12-16 04:07:34,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:34,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:34,816 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:34,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246589773] [2023-12-16 04:07:34,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:34,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:34,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:34,817 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) [2023-12-16 04:07:34,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 04:07:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:35,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 1186 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:07:35,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 4127 proven. 57 refuted. 0 times theorem prover too weak. 6040 trivial. 0 not checked. [2023-12-16 04:07:35,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:07:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 156 proven. 57 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2023-12-16 04:07:35,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:35,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789102674] [2023-12-16 04:07:35,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:35,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246589773] [2023-12-16 04:07:35,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246589773] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:07:35,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:07:35,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:07:35,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125221045] [2023-12-16 04:07:35,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:07:35,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:07:35,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:35,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:07:35,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:07:35,491 INFO L87 Difference]: Start difference. First operand 5485 states and 9073 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-16 04:07:36,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:36,236 INFO L93 Difference]: Finished difference Result 8355 states and 13789 transitions. [2023-12-16 04:07:36,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:07:36,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) Word has length 474 [2023-12-16 04:07:36,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:36,244 INFO L225 Difference]: With dead ends: 8355 [2023-12-16 04:07:36,245 INFO L226 Difference]: Without dead ends: 3030 [2023-12-16 04:07:36,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 940 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:07:36,255 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 527 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:36,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 968 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 04:07:36,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2023-12-16 04:07:36,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 3002. [2023-12-16 04:07:36,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 2137 states have (on average 1.5175479644361254) internal successors, (3243), 2141 states have internal predecessors, (3243), 840 states have call successors, (840), 24 states have call predecessors, (840), 24 states have return successors, (840), 836 states have call predecessors, (840), 840 states have call successors, (840) [2023-12-16 04:07:36,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 4923 transitions. [2023-12-16 04:07:36,412 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 4923 transitions. Word has length 474 [2023-12-16 04:07:36,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:36,413 INFO L495 AbstractCegarLoop]: Abstraction has 3002 states and 4923 transitions. [2023-12-16 04:07:36,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-16 04:07:36,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 4923 transitions. [2023-12-16 04:07:36,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-16 04:07:36,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:36,416 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:36,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 04:07:36,623 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 [2023-12-16 04:07:36,624 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:36,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:36,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1984973388, now seen corresponding path program 1 times [2023-12-16 04:07:36,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:36,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848945987] [2023-12-16 04:07:36,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:36,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:36,670 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:36,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498204943] [2023-12-16 04:07:36,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:36,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:36,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:36,671 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) [2023-12-16 04:07:36,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 04:07:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:37,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:07:37,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 3021 proven. 36 refuted. 0 times theorem prover too weak. 7167 trivial. 0 not checked. [2023-12-16 04:07:37,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:07:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 177 proven. 36 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2023-12-16 04:07:37,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:37,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848945987] [2023-12-16 04:07:37,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:37,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498204943] [2023-12-16 04:07:37,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498204943] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:07:37,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:07:37,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:07:37,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057196803] [2023-12-16 04:07:37,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:07:37,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:07:37,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:37,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:07:37,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:07:37,406 INFO L87 Difference]: Start difference. First operand 3002 states and 4923 transitions. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (84), 2 states have call predecessors, (84), 4 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2023-12-16 04:07:37,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:37,825 INFO L93 Difference]: Finished difference Result 5914 states and 9649 transitions. [2023-12-16 04:07:37,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:07:37,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (84), 2 states have call predecessors, (84), 4 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) Word has length 475 [2023-12-16 04:07:37,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:37,834 INFO L225 Difference]: With dead ends: 5914 [2023-12-16 04:07:37,834 INFO L226 Difference]: Without dead ends: 3076 [2023-12-16 04:07:37,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 942 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:07:37,841 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 483 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:37,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 775 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:07:37,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2023-12-16 04:07:38,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3030. [2023-12-16 04:07:38,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 2156 states have (on average 1.4962894248608534) internal successors, (3226), 2160 states have internal predecessors, (3226), 840 states have call successors, (840), 33 states have call predecessors, (840), 33 states have return successors, (840), 836 states have call predecessors, (840), 840 states have call successors, (840) [2023-12-16 04:07:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 4906 transitions. [2023-12-16 04:07:38,017 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 4906 transitions. Word has length 475 [2023-12-16 04:07:38,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:38,017 INFO L495 AbstractCegarLoop]: Abstraction has 3030 states and 4906 transitions. [2023-12-16 04:07:38,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (84), 2 states have call predecessors, (84), 4 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2023-12-16 04:07:38,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 4906 transitions. [2023-12-16 04:07:38,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-16 04:07:38,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:38,020 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:38,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 04:07:38,226 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 [2023-12-16 04:07:38,227 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:38,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:38,228 INFO L85 PathProgramCache]: Analyzing trace with hash -56700686, now seen corresponding path program 1 times [2023-12-16 04:07:38,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:38,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696915913] [2023-12-16 04:07:38,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:38,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:38,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:38,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346192038] [2023-12-16 04:07:38,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:38,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:38,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:38,282 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) [2023-12-16 04:07:38,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 04:07:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:38,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 04:07:38,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:07:39,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:07:39,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:39,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696915913] [2023-12-16 04:07:39,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:39,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346192038] [2023-12-16 04:07:39,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346192038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:07:39,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:07:39,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:07:39,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299571160] [2023-12-16 04:07:39,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:07:39,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:07:39,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:39,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:07:39,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:07:39,106 INFO L87 Difference]: Start difference. First operand 3030 states and 4906 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:39,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:39,971 INFO L93 Difference]: Finished difference Result 9105 states and 14774 transitions. [2023-12-16 04:07:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:07:39,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 475 [2023-12-16 04:07:39,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:39,987 INFO L225 Difference]: With dead ends: 9105 [2023-12-16 04:07:39,987 INFO L226 Difference]: Without dead ends: 6243 [2023-12-16 04:07:39,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:07:39,995 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 951 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:39,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1720 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 04:07:39,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6243 states. [2023-12-16 04:07:40,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6243 to 3619. [2023-12-16 04:07:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3619 states, 2571 states have (on average 1.49902761571373) internal successors, (3854), 2578 states have internal predecessors, (3854), 1008 states have call successors, (1008), 39 states have call predecessors, (1008), 39 states have return successors, (1008), 1001 states have call predecessors, (1008), 1008 states have call successors, (1008) [2023-12-16 04:07:40,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3619 states to 3619 states and 5870 transitions. [2023-12-16 04:07:40,364 INFO L78 Accepts]: Start accepts. Automaton has 3619 states and 5870 transitions. Word has length 475 [2023-12-16 04:07:40,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:40,364 INFO L495 AbstractCegarLoop]: Abstraction has 3619 states and 5870 transitions. [2023-12-16 04:07:40,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:40,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3619 states and 5870 transitions. [2023-12-16 04:07:40,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-16 04:07:40,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:40,368 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:40,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 04:07:40,575 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 [2023-12-16 04:07:40,575 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:40,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:40,576 INFO L85 PathProgramCache]: Analyzing trace with hash 57182302, now seen corresponding path program 1 times [2023-12-16 04:07:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:40,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817848557] [2023-12-16 04:07:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:40,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:40,641 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:40,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725636987] [2023-12-16 04:07:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:40,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:40,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:40,643 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) [2023-12-16 04:07:40,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 04:07:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:41,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:07:41,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 4583 proven. 69 refuted. 0 times theorem prover too weak. 5572 trivial. 0 not checked. [2023-12-16 04:07:41,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:07:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 144 proven. 69 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2023-12-16 04:07:41,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:41,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817848557] [2023-12-16 04:07:41,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:41,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725636987] [2023-12-16 04:07:41,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725636987] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:07:41,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:07:41,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:07:41,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512270586] [2023-12-16 04:07:41,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:07:41,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:07:41,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:41,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:07:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:07:41,432 INFO L87 Difference]: Start difference. First operand 3619 states and 5870 transitions. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2023-12-16 04:07:42,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:42,138 INFO L93 Difference]: Finished difference Result 7158 states and 11557 transitions. [2023-12-16 04:07:42,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:07:42,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 475 [2023-12-16 04:07:42,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:42,150 INFO L225 Difference]: With dead ends: 7158 [2023-12-16 04:07:42,150 INFO L226 Difference]: Without dead ends: 3707 [2023-12-16 04:07:42,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 942 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:07:42,158 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 234 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:42,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 1033 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:07:42,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2023-12-16 04:07:42,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3651. [2023-12-16 04:07:42,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3651 states, 2593 states have (on average 1.4863092942537601) internal successors, (3854), 2600 states have internal predecessors, (3854), 1008 states have call successors, (1008), 49 states have call predecessors, (1008), 49 states have return successors, (1008), 1001 states have call predecessors, (1008), 1008 states have call successors, (1008) [2023-12-16 04:07:42,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 5870 transitions. [2023-12-16 04:07:42,574 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 5870 transitions. Word has length 475 [2023-12-16 04:07:42,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:42,575 INFO L495 AbstractCegarLoop]: Abstraction has 3651 states and 5870 transitions. [2023-12-16 04:07:42,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2023-12-16 04:07:42,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 5870 transitions. [2023-12-16 04:07:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-16 04:07:42,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:42,579 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:42,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 04:07:42,786 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 [2023-12-16 04:07:42,787 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:42,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:42,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1334098283, now seen corresponding path program 1 times [2023-12-16 04:07:42,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:42,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216630450] [2023-12-16 04:07:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:42,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:42,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:42,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567403271] [2023-12-16 04:07:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:42,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:42,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:42,828 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) [2023-12-16 04:07:42,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 04:07:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:43,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 04:07:43,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:07:43,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:07:43,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:43,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216630450] [2023-12-16 04:07:43,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:43,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567403271] [2023-12-16 04:07:43,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567403271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:07:43,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:07:43,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:07:43,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622400107] [2023-12-16 04:07:43,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:07:43,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:07:43,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:43,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:07:43,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:07:43,689 INFO L87 Difference]: Start difference. First operand 3651 states and 5870 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:44,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:44,929 INFO L93 Difference]: Finished difference Result 13972 states and 22422 transitions. [2023-12-16 04:07:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:07:44,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 475 [2023-12-16 04:07:44,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:44,973 INFO L225 Difference]: With dead ends: 13972 [2023-12-16 04:07:44,973 INFO L226 Difference]: Without dead ends: 10493 [2023-12-16 04:07:44,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:07:44,983 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 1014 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:44,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1436 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 04:07:44,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10493 states. [2023-12-16 04:07:45,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10493 to 8604. [2023-12-16 04:07:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8604 states, 6486 states have (on average 1.520968239284613) internal successors, (9865), 6507 states have internal predecessors, (9865), 2022 states have call successors, (2022), 95 states have call predecessors, (2022), 95 states have return successors, (2022), 2001 states have call predecessors, (2022), 2022 states have call successors, (2022) [2023-12-16 04:07:45,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8604 states to 8604 states and 13909 transitions. [2023-12-16 04:07:45,717 INFO L78 Accepts]: Start accepts. Automaton has 8604 states and 13909 transitions. Word has length 475 [2023-12-16 04:07:45,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:45,718 INFO L495 AbstractCegarLoop]: Abstraction has 8604 states and 13909 transitions. [2023-12-16 04:07:45,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:45,718 INFO L276 IsEmpty]: Start isEmpty. Operand 8604 states and 13909 transitions. [2023-12-16 04:07:45,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-16 04:07:45,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:45,724 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:45,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 04:07:45,933 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 [2023-12-16 04:07:45,933 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:45,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:45,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1193549673, now seen corresponding path program 1 times [2023-12-16 04:07:45,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:45,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105706937] [2023-12-16 04:07:45,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:45,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:46,024 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:46,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730049037] [2023-12-16 04:07:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:46,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:46,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:46,034 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) [2023-12-16 04:07:46,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 04:07:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:46,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 04:07:46,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:07:46,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:07:46,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:46,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105706937] [2023-12-16 04:07:46,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:46,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730049037] [2023-12-16 04:07:46,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730049037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:07:46,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:07:46,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:07:46,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300945739] [2023-12-16 04:07:46,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:07:46,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:07:46,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:07:46,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:07:46,825 INFO L87 Difference]: Start difference. First operand 8604 states and 13909 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:47,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:47,962 INFO L93 Difference]: Finished difference Result 26819 states and 43274 transitions. [2023-12-16 04:07:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:07:47,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 475 [2023-12-16 04:07:47,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:48,006 INFO L225 Difference]: With dead ends: 26819 [2023-12-16 04:07:48,006 INFO L226 Difference]: Without dead ends: 18368 [2023-12-16 04:07:48,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:07:48,025 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 432 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:48,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1203 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:07:48,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18368 states. [2023-12-16 04:07:49,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18368 to 16965. [2023-12-16 04:07:49,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16965 states, 12809 states have (on average 1.5187758607229291) internal successors, (19454), 12851 states have internal predecessors, (19454), 3972 states have call successors, (3972), 183 states have call predecessors, (3972), 183 states have return successors, (3972), 3930 states have call predecessors, (3972), 3972 states have call successors, (3972) [2023-12-16 04:07:49,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16965 states to 16965 states and 27398 transitions. [2023-12-16 04:07:49,537 INFO L78 Accepts]: Start accepts. Automaton has 16965 states and 27398 transitions. Word has length 475 [2023-12-16 04:07:49,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:49,538 INFO L495 AbstractCegarLoop]: Abstraction has 16965 states and 27398 transitions. [2023-12-16 04:07:49,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:49,538 INFO L276 IsEmpty]: Start isEmpty. Operand 16965 states and 27398 transitions. [2023-12-16 04:07:49,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-12-16 04:07:49,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:49,543 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:49,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-16 04:07:49,751 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 [2023-12-16 04:07:49,751 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:49,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:49,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1456858601, now seen corresponding path program 1 times [2023-12-16 04:07:49,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:49,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005329996] [2023-12-16 04:07:49,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:49,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:49,789 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:49,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638640469] [2023-12-16 04:07:49,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:49,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:49,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:49,805 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) [2023-12-16 04:07:49,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 04:07:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:50,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:07:50,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 3701 proven. 48 refuted. 0 times theorem prover too weak. 6475 trivial. 0 not checked. [2023-12-16 04:07:50,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:07:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 165 proven. 48 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2023-12-16 04:07:50,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:50,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005329996] [2023-12-16 04:07:50,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:50,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638640469] [2023-12-16 04:07:50,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638640469] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:07:50,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:07:50,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:07:50,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109121573] [2023-12-16 04:07:50,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:07:50,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:07:50,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:50,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:07:50,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:07:50,628 INFO L87 Difference]: Start difference. First operand 16965 states and 27398 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (88), 2 states have call predecessors, (88), 4 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-16 04:07:52,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:52,007 INFO L93 Difference]: Finished difference Result 32605 states and 52237 transitions. [2023-12-16 04:07:52,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:07:52,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (88), 2 states have call predecessors, (88), 4 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 476 [2023-12-16 04:07:52,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:52,062 INFO L225 Difference]: With dead ends: 32605 [2023-12-16 04:07:52,063 INFO L226 Difference]: Without dead ends: 15135 [2023-12-16 04:07:52,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 944 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:07:52,088 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 425 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:52,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 764 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:07:52,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15135 states. [2023-12-16 04:07:53,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15135 to 10117. [2023-12-16 04:07:53,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10117 states, 7672 states have (on average 1.5071689259645464) internal successors, (11563), 7698 states have internal predecessors, (11563), 2316 states have call successors, (2316), 128 states have call predecessors, (2316), 128 states have return successors, (2316), 2290 states have call predecessors, (2316), 2316 states have call successors, (2316) [2023-12-16 04:07:53,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10117 states to 10117 states and 16195 transitions. [2023-12-16 04:07:53,358 INFO L78 Accepts]: Start accepts. Automaton has 10117 states and 16195 transitions. Word has length 476 [2023-12-16 04:07:53,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:53,359 INFO L495 AbstractCegarLoop]: Abstraction has 10117 states and 16195 transitions. [2023-12-16 04:07:53,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (88), 2 states have call predecessors, (88), 4 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-16 04:07:53,359 INFO L276 IsEmpty]: Start isEmpty. Operand 10117 states and 16195 transitions. [2023-12-16 04:07:53,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-12-16 04:07:53,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:53,376 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:53,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-16 04:07:53,582 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 [2023-12-16 04:07:53,583 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:53,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:53,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1808673941, now seen corresponding path program 1 times [2023-12-16 04:07:53,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:53,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348388380] [2023-12-16 04:07:53,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:53,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:53,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:53,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632569304] [2023-12-16 04:07:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:53,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:53,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:53,680 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) [2023-12-16 04:07:53,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-16 04:07:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:54,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 04:07:54,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:07:54,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:07:54,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:54,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348388380] [2023-12-16 04:07:54,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:54,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632569304] [2023-12-16 04:07:54,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632569304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:07:54,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:07:54,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:07:54,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079146516] [2023-12-16 04:07:54,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:07:54,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:07:54,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:54,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:07:54,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:07:54,471 INFO L87 Difference]: Start difference. First operand 10117 states and 16195 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:55,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:07:55,656 INFO L93 Difference]: Finished difference Result 22385 states and 35693 transitions. [2023-12-16 04:07:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:07:55,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 476 [2023-12-16 04:07:55,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:07:55,698 INFO L225 Difference]: With dead ends: 22385 [2023-12-16 04:07:55,698 INFO L226 Difference]: Without dead ends: 17398 [2023-12-16 04:07:55,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:07:55,741 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 1066 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:07:55,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 1394 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:07:55,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17398 states. [2023-12-16 04:07:56,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17398 to 8889. [2023-12-16 04:07:56,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8889 states, 7052 states have (on average 1.5406976744186047) internal successors, (10865), 7068 states have internal predecessors, (10865), 1728 states have call successors, (1728), 108 states have call predecessors, (1728), 108 states have return successors, (1728), 1712 states have call predecessors, (1728), 1728 states have call successors, (1728) [2023-12-16 04:07:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8889 states to 8889 states and 14321 transitions. [2023-12-16 04:07:56,587 INFO L78 Accepts]: Start accepts. Automaton has 8889 states and 14321 transitions. Word has length 476 [2023-12-16 04:07:56,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:07:56,587 INFO L495 AbstractCegarLoop]: Abstraction has 8889 states and 14321 transitions. [2023-12-16 04:07:56,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:07:56,588 INFO L276 IsEmpty]: Start isEmpty. Operand 8889 states and 14321 transitions. [2023-12-16 04:07:56,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-12-16 04:07:56,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:07:56,591 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:56,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-16 04:07:56,799 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 [2023-12-16 04:07:56,800 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:07:56,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:07:56,800 INFO L85 PathProgramCache]: Analyzing trace with hash -460095927, now seen corresponding path program 1 times [2023-12-16 04:07:56,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:07:56,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612721103] [2023-12-16 04:07:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:56,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:07:56,848 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:07:56,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654693621] [2023-12-16 04:07:56,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:07:56,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:07:56,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:07:56,865 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) [2023-12-16 04:07:56,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-16 04:07:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:07:57,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 04:07:57,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:07:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 4191 proven. 153 refuted. 0 times theorem prover too weak. 5880 trivial. 0 not checked. [2023-12-16 04:07:58,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:07:58,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 60 proven. 153 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2023-12-16 04:07:58,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:07:58,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612721103] [2023-12-16 04:07:58,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:07:58,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654693621] [2023-12-16 04:07:58,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654693621] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:07:58,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:07:58,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2023-12-16 04:07:58,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649279923] [2023-12-16 04:07:58,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:07:58,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 04:07:58,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:07:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 04:07:58,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:07:58,666 INFO L87 Difference]: Start difference. First operand 8889 states and 14321 transitions. Second operand has 14 states, 14 states have (on average 15.357142857142858) internal successors, (215), 14 states have internal predecessors, (215), 4 states have call successors, (144), 3 states have call predecessors, (144), 5 states have return successors, (144), 4 states have call predecessors, (144), 4 states have call successors, (144) [2023-12-16 04:08:01,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:01,035 INFO L93 Difference]: Finished difference Result 29422 states and 46969 transitions. [2023-12-16 04:08:01,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 04:08:01,035 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.357142857142858) internal successors, (215), 14 states have internal predecessors, (215), 4 states have call successors, (144), 3 states have call predecessors, (144), 5 states have return successors, (144), 4 states have call predecessors, (144), 4 states have call successors, (144) Word has length 476 [2023-12-16 04:08:01,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:01,066 INFO L225 Difference]: With dead ends: 29422 [2023-12-16 04:08:01,067 INFO L226 Difference]: Without dead ends: 20708 [2023-12-16 04:08:01,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 961 GetRequests, 939 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2023-12-16 04:08:01,076 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 2017 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:01,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2017 Valid, 2625 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 04:08:01,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20708 states. [2023-12-16 04:08:02,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20708 to 17912. [2023-12-16 04:08:02,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17912 states, 14566 states have (on average 1.5350130440752436) internal successors, (22359), 14618 states have internal predecessors, (22359), 3116 states have call successors, (3116), 229 states have call predecessors, (3116), 229 states have return successors, (3116), 3064 states have call predecessors, (3116), 3116 states have call successors, (3116) [2023-12-16 04:08:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17912 states to 17912 states and 28591 transitions. [2023-12-16 04:08:02,321 INFO L78 Accepts]: Start accepts. Automaton has 17912 states and 28591 transitions. Word has length 476 [2023-12-16 04:08:02,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:02,321 INFO L495 AbstractCegarLoop]: Abstraction has 17912 states and 28591 transitions. [2023-12-16 04:08:02,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.357142857142858) internal successors, (215), 14 states have internal predecessors, (215), 4 states have call successors, (144), 3 states have call predecessors, (144), 5 states have return successors, (144), 4 states have call predecessors, (144), 4 states have call successors, (144) [2023-12-16 04:08:02,321 INFO L276 IsEmpty]: Start isEmpty. Operand 17912 states and 28591 transitions. [2023-12-16 04:08:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2023-12-16 04:08:02,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:02,326 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:02,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:02,534 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 [2023-12-16 04:08:02,535 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:02,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:02,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1735618293, now seen corresponding path program 1 times [2023-12-16 04:08:02,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:02,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891243840] [2023-12-16 04:08:02,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:02,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:02,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:02,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133669922] [2023-12-16 04:08:02,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:02,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:02,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:02,619 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) [2023-12-16 04:08:02,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-16 04:08:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:03,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 04:08:03,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:04,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 627 proven. 207 refuted. 0 times theorem prover too weak. 9390 trivial. 0 not checked. [2023-12-16 04:08:04,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:08:04,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:04,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891243840] [2023-12-16 04:08:04,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:04,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133669922] [2023-12-16 04:08:04,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133669922] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:08:04,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:08:04,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-16 04:08:04,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760680343] [2023-12-16 04:08:04,293 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 04:08:04,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:08:04,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:04,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:08:04,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:08:04,295 INFO L87 Difference]: Start difference. First operand 17912 states and 28591 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (72), 2 states have call predecessors, (72), 3 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2023-12-16 04:08:07,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:08:10,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:08:15,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:08:16,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:08:20,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-16 04:08:23,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] Received shutdown request... [2023-12-16 04:08:23,933 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 [2023-12-16 04:08:23,966 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 [2023-12-16 04:08:24,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:08:24,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-16 04:08:24,029 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 42 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:24,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 71 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 156 Invalid, 2 Unknown, 0 Unchecked, 17.4s Time] [2023-12-16 04:08:24,030 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:08:24,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:24,231 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 [2023-12-16 04:08:24,232 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (17912states) and FLOYD_HOARE automaton (currently 9 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (43 states constructed, input type IntersectNwa). [2023-12-16 04:08:24,236 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] [2023-12-16 04:08:24,237 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:08:24,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:08:24 BoogieIcfgContainer [2023-12-16 04:08:24,239 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:08:24,240 INFO L158 Benchmark]: Toolchain (without parser) took 63581.70ms. Allocated memory was 211.8MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 146.3MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 821.8MB. Max. memory is 8.0GB. [2023-12-16 04:08:24,240 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 211.8MB. Free memory is still 162.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:08:24,240 INFO L158 Benchmark]: CACSL2BoogieTranslator took 491.51ms. Allocated memory was 211.8MB in the beginning and 356.5MB in the end (delta: 144.7MB). Free memory was 146.3MB in the beginning and 302.4MB in the end (delta: -156.1MB). Peak memory consumption was 23.6MB. Max. memory is 8.0GB. [2023-12-16 04:08:24,240 INFO L158 Benchmark]: Boogie Procedure Inliner took 118.49ms. Allocated memory is still 356.5MB. Free memory was 302.4MB in the beginning and 286.2MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 04:08:24,240 INFO L158 Benchmark]: Boogie Preprocessor took 186.49ms. Allocated memory is still 356.5MB. Free memory was 286.2MB in the beginning and 311.9MB in the end (delta: -25.7MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. [2023-12-16 04:08:24,240 INFO L158 Benchmark]: RCFGBuilder took 943.28ms. Allocated memory is still 356.5MB. Free memory was 311.9MB in the beginning and 223.7MB in the end (delta: 88.2MB). Peak memory consumption was 96.6MB. Max. memory is 8.0GB. [2023-12-16 04:08:24,241 INFO L158 Benchmark]: TraceAbstraction took 61835.91ms. Allocated memory was 356.5MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 223.2MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 753.1MB. Max. memory is 8.0GB. [2023-12-16 04:08:24,242 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 211.8MB. Free memory is still 162.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 491.51ms. Allocated memory was 211.8MB in the beginning and 356.5MB in the end (delta: 144.7MB). Free memory was 146.3MB in the beginning and 302.4MB in the end (delta: -156.1MB). Peak memory consumption was 23.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 118.49ms. Allocated memory is still 356.5MB. Free memory was 302.4MB in the beginning and 286.2MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 186.49ms. Allocated memory is still 356.5MB. Free memory was 286.2MB in the beginning and 311.9MB in the end (delta: -25.7MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. * RCFGBuilder took 943.28ms. Allocated memory is still 356.5MB. Free memory was 311.9MB in the beginning and 223.7MB in the end (delta: 88.2MB). Peak memory consumption was 96.6MB. Max. memory is 8.0GB. * TraceAbstraction took 61835.91ms. Allocated memory was 356.5MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 223.2MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 753.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (17912states) and FLOYD_HOARE automaton (currently 9 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (43 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 239 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61.8s, OverallIterations: 19, TraceHistogramMax: 72, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 32.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 11205 SdHoareTripleChecker+Valid, 23.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10993 mSDsluCounter, 21151 SdHoareTripleChecker+Invalid, 22.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12984 mSDsCounter, 2049 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5629 IncrementalHoareTripleChecker+Invalid, 7680 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2049 mSolverCounterUnsat, 8167 mSDtfsCounter, 5629 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11486 GetRequests, 11375 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17912occurred in iteration=18, InterpolantAutomatonStates: 110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 29233 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 9482 NumberOfCodeBlocks, 9482 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 11362 ConstructedInterpolants, 2 QuantifiedInterpolants, 32064 SizeOfPredicates, 38 NumberOfNonLiveVariables, 22438 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 24 InterpolantComputations, 13 PerfectInterpolantSequences, 244443/245376 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