/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cal101.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 15:10:24,023 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 15:10:24,107 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 15:10:24,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 15:10:24,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 15:10:24,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 15:10:24,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 15:10:24,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 15:10:24,141 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 15:10:24,145 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 15:10:24,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 15:10:24,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 15:10:24,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 15:10:24,147 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 15:10:24,148 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 15:10:24,148 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 15:10:24,148 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 15:10:24,148 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 15:10:24,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 15:10:24,149 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 15:10:24,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 15:10:24,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 15:10:24,150 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 15:10:24,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 15:10:24,150 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 15:10:24,151 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 15:10:24,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 15:10:24,151 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 15:10:24,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 15:10:24,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 15:10:24,152 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 15:10:24,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 15:10:24,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 15:10:24,153 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 15:10:24,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 15:10:24,153 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 15:10:24,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 15:10:24,154 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 15:10:24,154 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 15:10:24,154 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 15:10:24,154 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 15:10:24,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 15:10:24,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 15:10:24,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 15:10:24,427 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 15:10:24,428 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 15:10:24,428 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cal101.c [2023-12-25 15:10:25,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 15:10:26,216 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 15:10:26,217 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cal101.c [2023-12-25 15:10:26,276 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ed1daa4b/49498ceefa234631aa7cbcbebf2ab0c7/FLAGa3edef2fa [2023-12-25 15:10:26,294 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ed1daa4b/49498ceefa234631aa7cbcbebf2ab0c7 [2023-12-25 15:10:26,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 15:10:26,298 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 15:10:26,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 15:10:26,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 15:10:26,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 15:10:26,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 03:10:26" (1/1) ... [2023-12-25 15:10:26,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182e7432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:10:26, skipping insertion in model container [2023-12-25 15:10:26,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 03:10:26" (1/1) ... [2023-12-25 15:10:26,547 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 15:10:26,874 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cal101.c[1246,1259] [2023-12-25 15:10:28,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 15:10:28,405 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 15:10:28,416 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cal101.c[1246,1259] [2023-12-25 15:10:29,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 15:10:29,435 INFO L206 MainTranslator]: Completed translation [2023-12-25 15:10:29,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:10:29 WrapperNode [2023-12-25 15:10:29,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 15:10:29,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 15:10:29,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 15:10:29,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 15:10:29,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:10:29" (1/1) ... [2023-12-25 15:10:29,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:10:29" (1/1) ... [2023-12-25 15:10:34,647 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57414 [2023-12-25 15:10:34,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 15:10:34,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 15:10:34,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 15:10:34,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 15:10:34,656 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:10:29" (1/1) ... [2023-12-25 15:10:34,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:10:29" (1/1) ... [2023-12-25 15:10:35,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:10:29" (1/1) ... [2023-12-25 15:10:36,661 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]. [2023-12-25 15:10:36,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:10:29" (1/1) ... [2023-12-25 15:10:36,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:10:29" (1/1) ... [2023-12-25 15:10:37,992 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:10:29" (1/1) ... [2023-12-25 15:10:38,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:10:29" (1/1) ... [2023-12-25 15:10:38,380 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:10:29" (1/1) ... [2023-12-25 15:10:38,531 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:10:29" (1/1) ... [2023-12-25 15:10:39,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 15:10:39,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 15:10:39,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 15:10:39,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 15:10:39,365 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:10:29" (1/1) ... [2023-12-25 15:10:39,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 15:10:39,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:10:39,412 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) [2023-12-25 15:10:39,422 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 [2023-12-25 15:10:39,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 15:10:39,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 15:10:39,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 15:10:39,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 15:10:42,251 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 15:10:42,252 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 15:11:12,376 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 15:11:13,365 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 15:11:13,365 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 15:11:13,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 03:11:13 BoogieIcfgContainer [2023-12-25 15:11:13,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 15:11:13,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 15:11:13,368 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 15:11:13,370 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 15:11:13,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 03:10:26" (1/3) ... [2023-12-25 15:11:13,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb8a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 03:11:13, skipping insertion in model container [2023-12-25 15:11:13,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:10:29" (2/3) ... [2023-12-25 15:11:13,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb8a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 03:11:13, skipping insertion in model container [2023-12-25 15:11:13,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 03:11:13" (3/3) ... [2023-12-25 15:11:13,373 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal101.c [2023-12-25 15:11:13,388 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 15:11:13,388 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 15:11:13,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 15:11:13,569 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;@41545627, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 15:11:13,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 15:11:13,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 11906 states, 11904 states have (on average 1.6672547043010753) internal successors, (19847), 11905 states have internal predecessors, (19847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:13,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-25 15:11:13,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:13,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:13,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:13,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:13,628 INFO L85 PathProgramCache]: Analyzing trace with hash -741716717, now seen corresponding path program 1 times [2023-12-25 15:11:13,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:13,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411303426] [2023-12-25 15:11:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:13,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:14,175 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:11:14,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514061003] [2023-12-25 15:11:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:14,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:11:14,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:11:14,180 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) [2023-12-25 15:11:14,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 15:11:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:17,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 1949 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-25 15:11:17,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:11:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:19,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:11:19,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:19,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411303426] [2023-12-25 15:11:19,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:11:19,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514061003] [2023-12-25 15:11:19,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514061003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:19,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:19,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:11:19,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584374097] [2023-12-25 15:11:19,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:19,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:11:19,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:19,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:11:19,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:11:19,477 INFO L87 Difference]: Start difference. First operand has 11906 states, 11904 states have (on average 1.6672547043010753) internal successors, (19847), 11905 states have internal predecessors, (19847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 70.2) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:21,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:21,662 INFO L93 Difference]: Finished difference Result 23527 states and 39222 transitions. [2023-12-25 15:11:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:11:21,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 70.2) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 351 [2023-12-25 15:11:21,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:21,717 INFO L225 Difference]: With dead ends: 23527 [2023-12-25 15:11:21,717 INFO L226 Difference]: Without dead ends: 11904 [2023-12-25 15:11:21,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:11:21,736 INFO L413 NwaCegarLoop]: 18955 mSDtfsCounter, 39146 mSDsluCounter, 18954 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39146 SdHoareTripleChecker+Valid, 37909 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:21,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39146 Valid, 37909 Invalid, 1765 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1764 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-25 15:11:21,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11904 states. [2023-12-25 15:11:21,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11904 to 11904. [2023-12-25 15:11:21,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11904 states, 11903 states have (on average 1.6666386625220533) internal successors, (19838), 11903 states have internal predecessors, (19838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:22,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11904 states to 11904 states and 19838 transitions. [2023-12-25 15:11:22,010 INFO L78 Accepts]: Start accepts. Automaton has 11904 states and 19838 transitions. Word has length 351 [2023-12-25 15:11:22,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:22,011 INFO L495 AbstractCegarLoop]: Abstraction has 11904 states and 19838 transitions. [2023-12-25 15:11:22,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.2) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:22,012 INFO L276 IsEmpty]: Start isEmpty. Operand 11904 states and 19838 transitions. [2023-12-25 15:11:22,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-12-25 15:11:22,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:22,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:22,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-25 15:11:22,241 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 [2023-12-25 15:11:22,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:22,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:22,243 INFO L85 PathProgramCache]: Analyzing trace with hash 894118493, now seen corresponding path program 1 times [2023-12-25 15:11:22,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:22,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245476424] [2023-12-25 15:11:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:22,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:22,520 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:11:22,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979608217] [2023-12-25 15:11:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:22,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:11:22,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:11:22,532 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) [2023-12-25 15:11:22,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 15:11:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:25,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 1952 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 15:11:25,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:11:26,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:26,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:11:26,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:26,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245476424] [2023-12-25 15:11:26,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:11:26,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979608217] [2023-12-25 15:11:26,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979608217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:26,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:26,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:11:26,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782022402] [2023-12-25 15:11:26,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:26,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:11:26,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:26,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:11:26,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:11:26,968 INFO L87 Difference]: Start difference. First operand 11904 states and 19838 transitions. Second operand has 5 states, 5 states have (on average 70.4) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:29,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:29,236 INFO L93 Difference]: Finished difference Result 23525 states and 39205 transitions. [2023-12-25 15:11:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:11:29,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 352 [2023-12-25 15:11:29,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:29,280 INFO L225 Difference]: With dead ends: 23525 [2023-12-25 15:11:29,280 INFO L226 Difference]: Without dead ends: 11904 [2023-12-25 15:11:29,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:11:29,297 INFO L413 NwaCegarLoop]: 18967 mSDtfsCounter, 19504 mSDsluCounter, 37932 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19504 SdHoareTripleChecker+Valid, 56899 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:29,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19504 Valid, 56899 Invalid, 2605 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2603 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-25 15:11:29,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11904 states. [2023-12-25 15:11:29,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11904 to 11904. [2023-12-25 15:11:29,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11904 states, 11903 states have (on average 1.6664706376543728) internal successors, (19836), 11903 states have internal predecessors, (19836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11904 states to 11904 states and 19836 transitions. [2023-12-25 15:11:29,532 INFO L78 Accepts]: Start accepts. Automaton has 11904 states and 19836 transitions. Word has length 352 [2023-12-25 15:11:29,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:29,534 INFO L495 AbstractCegarLoop]: Abstraction has 11904 states and 19836 transitions. [2023-12-25 15:11:29,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:29,534 INFO L276 IsEmpty]: Start isEmpty. Operand 11904 states and 19836 transitions. [2023-12-25 15:11:29,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-12-25 15:11:29,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:29,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:29,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 15:11:29,759 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 [2023-12-25 15:11:29,760 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:29,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:29,760 INFO L85 PathProgramCache]: Analyzing trace with hash 415795457, now seen corresponding path program 1 times [2023-12-25 15:11:29,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:29,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773311420] [2023-12-25 15:11:29,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:29,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:30,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:11:30,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324357048] [2023-12-25 15:11:30,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:30,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:11:30,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:11:30,043 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) [2023-12-25 15:11:30,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 15:11:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:33,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 1955 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-25 15:11:33,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:11:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:33,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:11:33,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:33,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773311420] [2023-12-25 15:11:33,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:11:33,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324357048] [2023-12-25 15:11:33,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324357048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:33,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:33,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 15:11:33,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679569196] [2023-12-25 15:11:33,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:33,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 15:11:33,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:33,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 15:11:33,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:11:33,746 INFO L87 Difference]: Start difference. First operand 11904 states and 19836 transitions. Second operand has 8 states, 8 states have (on average 44.125) internal successors, (353), 8 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:37,100 INFO L93 Difference]: Finished difference Result 35146 states and 58566 transitions. [2023-12-25 15:11:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 15:11:37,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 44.125) internal successors, (353), 8 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 353 [2023-12-25 15:11:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:37,140 INFO L225 Difference]: With dead ends: 35146 [2023-12-25 15:11:37,140 INFO L226 Difference]: Without dead ends: 23525 [2023-12-25 15:11:37,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-12-25 15:11:37,154 INFO L413 NwaCegarLoop]: 19329 mSDtfsCounter, 77671 mSDsluCounter, 76980 mSDsCounter, 0 mSdLazyCounter, 4469 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77671 SdHoareTripleChecker+Valid, 96309 SdHoareTripleChecker+Invalid, 4474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 4469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:37,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77671 Valid, 96309 Invalid, 4474 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5 Valid, 4469 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-25 15:11:37,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23525 states. [2023-12-25 15:11:37,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23525 to 11908. [2023-12-25 15:11:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11908 states, 11907 states have (on average 1.666246745611825) internal successors, (19840), 11907 states have internal predecessors, (19840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11908 states to 11908 states and 19840 transitions. [2023-12-25 15:11:37,415 INFO L78 Accepts]: Start accepts. Automaton has 11908 states and 19840 transitions. Word has length 353 [2023-12-25 15:11:37,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:37,416 INFO L495 AbstractCegarLoop]: Abstraction has 11908 states and 19840 transitions. [2023-12-25 15:11:37,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 44.125) internal successors, (353), 8 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:37,416 INFO L276 IsEmpty]: Start isEmpty. Operand 11908 states and 19840 transitions. [2023-12-25 15:11:37,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-12-25 15:11:37,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:37,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:37,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 15:11:37,640 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 [2023-12-25 15:11:37,641 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:37,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:37,641 INFO L85 PathProgramCache]: Analyzing trace with hash -9415653, now seen corresponding path program 1 times [2023-12-25 15:11:37,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:37,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741028710] [2023-12-25 15:11:37,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:37,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:37,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:11:37,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674637098] [2023-12-25 15:11:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:37,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:11:37,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:11:37,804 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) [2023-12-25 15:11:37,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 15:11:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:41,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-25 15:11:41,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:11:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:43,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:11:43,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:43,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741028710] [2023-12-25 15:11:43,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:11:43,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674637098] [2023-12-25 15:11:43,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674637098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:43,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:43,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 15:11:43,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89969014] [2023-12-25 15:11:43,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:43,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 15:11:43,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:43,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 15:11:43,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-25 15:11:43,232 INFO L87 Difference]: Start difference. First operand 11908 states and 19840 transitions. Second operand has 11 states, 11 states have (on average 32.27272727272727) internal successors, (355), 10 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:09,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:09,911 INFO L93 Difference]: Finished difference Result 58541 states and 97529 transitions. [2023-12-25 15:12:09,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-25 15:12:09,912 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 32.27272727272727) internal successors, (355), 10 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 355 [2023-12-25 15:12:09,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:09,993 INFO L225 Difference]: With dead ends: 58541 [2023-12-25 15:12:09,993 INFO L226 Difference]: Without dead ends: 46916 [2023-12-25 15:12:10,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=226, Invalid=704, Unknown=0, NotChecked=0, Total=930 [2023-12-25 15:12:10,027 INFO L413 NwaCegarLoop]: 33412 mSDtfsCounter, 135175 mSDsluCounter, 183914 mSDsCounter, 0 mSdLazyCounter, 40214 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135175 SdHoareTripleChecker+Valid, 217326 SdHoareTripleChecker+Invalid, 40216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:10,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135175 Valid, 217326 Invalid, 40216 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [2 Valid, 40214 Invalid, 0 Unknown, 0 Unchecked, 24.5s Time] [2023-12-25 15:12:10,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46916 states. [2023-12-25 15:12:10,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46916 to 11973. [2023-12-25 15:12:10,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11973 states, 11972 states have (on average 1.6658035415970598) internal successors, (19943), 11972 states have internal predecessors, (19943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11973 states to 11973 states and 19943 transitions. [2023-12-25 15:12:10,463 INFO L78 Accepts]: Start accepts. Automaton has 11973 states and 19943 transitions. Word has length 355 [2023-12-25 15:12:10,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:10,464 INFO L495 AbstractCegarLoop]: Abstraction has 11973 states and 19943 transitions. [2023-12-25 15:12:10,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.27272727272727) internal successors, (355), 10 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 11973 states and 19943 transitions. [2023-12-25 15:12:10,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-12-25 15:12:10,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:10,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:10,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 15:12:10,690 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 [2023-12-25 15:12:10,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:10,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:10,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1765591709, now seen corresponding path program 1 times [2023-12-25 15:12:10,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:10,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609193991] [2023-12-25 15:12:10,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:10,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:10,880 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:12:10,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887445766] [2023-12-25 15:12:10,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:10,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:12:10,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:12:10,882 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) [2023-12-25 15:12:10,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 15:12:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:14,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-25 15:12:14,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:12:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:15,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:12:15,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:15,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609193991] [2023-12-25 15:12:15,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:12:15,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887445766] [2023-12-25 15:12:15,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887445766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:15,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:15,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 15:12:15,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739924862] [2023-12-25 15:12:15,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:15,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 15:12:15,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:15,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 15:12:15,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-25 15:12:15,734 INFO L87 Difference]: Start difference. First operand 11973 states and 19943 transitions. Second operand has 13 states, 13 states have (on average 27.307692307692307) internal successors, (355), 12 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:35,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:35,181 INFO L93 Difference]: Finished difference Result 47078 states and 78406 transitions. [2023-12-25 15:12:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-25 15:12:35,182 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.307692307692307) internal successors, (355), 12 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 355 [2023-12-25 15:12:35,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:35,239 INFO L225 Difference]: With dead ends: 47078 [2023-12-25 15:12:35,239 INFO L226 Difference]: Without dead ends: 35388 [2023-12-25 15:12:35,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2023-12-25 15:12:35,260 INFO L413 NwaCegarLoop]: 35288 mSDtfsCounter, 116816 mSDsluCounter, 282664 mSDsCounter, 0 mSdLazyCounter, 35341 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116816 SdHoareTripleChecker+Valid, 317952 SdHoareTripleChecker+Invalid, 35348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:35,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116816 Valid, 317952 Invalid, 35348 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [7 Valid, 35341 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2023-12-25 15:12:35,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35388 states. [2023-12-25 15:12:35,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35388 to 11985. [2023-12-25 15:12:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11985 states, 11984 states have (on average 1.665303738317757) internal successors, (19957), 11984 states have internal predecessors, (19957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:35,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11985 states to 11985 states and 19957 transitions. [2023-12-25 15:12:35,601 INFO L78 Accepts]: Start accepts. Automaton has 11985 states and 19957 transitions. Word has length 355 [2023-12-25 15:12:35,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:35,602 INFO L495 AbstractCegarLoop]: Abstraction has 11985 states and 19957 transitions. [2023-12-25 15:12:35,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.307692307692307) internal successors, (355), 12 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:35,602 INFO L276 IsEmpty]: Start isEmpty. Operand 11985 states and 19957 transitions. [2023-12-25 15:12:35,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-12-25 15:12:35,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:35,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:35,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-25 15:12:35,824 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 [2023-12-25 15:12:35,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:35,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:35,825 INFO L85 PathProgramCache]: Analyzing trace with hash -123227697, now seen corresponding path program 1 times [2023-12-25 15:12:35,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:35,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760443088] [2023-12-25 15:12:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:35,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:35,982 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:12:35,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509431962] [2023-12-25 15:12:35,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:35,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:12:35,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:12:35,984 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) [2023-12-25 15:12:35,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 15:12:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:39,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 15:12:39,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:12:39,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:39,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:12:39,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:39,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760443088] [2023-12-25 15:12:39,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:12:39,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509431962] [2023-12-25 15:12:39,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509431962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:39,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:39,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 15:12:39,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079575087] [2023-12-25 15:12:39,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:39,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 15:12:39,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:39,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 15:12:39,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 15:12:39,181 INFO L87 Difference]: Start difference. First operand 11985 states and 19957 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:39,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:39,376 INFO L93 Difference]: Finished difference Result 23688 states and 39445 transitions. [2023-12-25 15:12:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 15:12:39,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 355 [2023-12-25 15:12:39,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:39,396 INFO L225 Difference]: With dead ends: 23688 [2023-12-25 15:12:39,396 INFO L226 Difference]: Without dead ends: 11986 [2023-12-25 15:12:39,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 15:12:39,413 INFO L413 NwaCegarLoop]: 19834 mSDtfsCounter, 6 mSDsluCounter, 19824 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39658 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:39,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39658 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 15:12:39,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11986 states. [2023-12-25 15:12:39,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11986 to 11985. [2023-12-25 15:12:39,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11985 states, 11984 states have (on average 1.6652202937249667) internal successors, (19956), 11984 states have internal predecessors, (19956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:39,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11985 states to 11985 states and 19956 transitions. [2023-12-25 15:12:39,602 INFO L78 Accepts]: Start accepts. Automaton has 11985 states and 19956 transitions. Word has length 355 [2023-12-25 15:12:39,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:39,603 INFO L495 AbstractCegarLoop]: Abstraction has 11985 states and 19956 transitions. [2023-12-25 15:12:39,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:39,603 INFO L276 IsEmpty]: Start isEmpty. Operand 11985 states and 19956 transitions. [2023-12-25 15:12:39,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-12-25 15:12:39,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:39,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:39,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-25 15:12:39,820 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 [2023-12-25 15:12:39,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:39,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:39,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1893503659, now seen corresponding path program 1 times [2023-12-25 15:12:39,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:39,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982183787] [2023-12-25 15:12:39,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:39,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:40,002 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:12:40,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31231367] [2023-12-25 15:12:40,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:40,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:12:40,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:12:40,004 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) [2023-12-25 15:12:40,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-25 15:12:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:43,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 15:12:43,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:12:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:43,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:12:43,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:43,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982183787] [2023-12-25 15:12:43,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:12:43,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31231367] [2023-12-25 15:12:43,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31231367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:43,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:43,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 15:12:43,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390905101] [2023-12-25 15:12:43,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:43,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 15:12:43,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:43,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 15:12:43,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 15:12:43,397 INFO L87 Difference]: Start difference. First operand 11985 states and 19956 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:43,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:43,814 INFO L93 Difference]: Finished difference Result 23689 states and 39444 transitions. [2023-12-25 15:12:43,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 15:12:43,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 355 [2023-12-25 15:12:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:43,831 INFO L225 Difference]: With dead ends: 23689 [2023-12-25 15:12:43,831 INFO L226 Difference]: Without dead ends: 11987 [2023-12-25 15:12:43,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 15:12:43,843 INFO L413 NwaCegarLoop]: 19834 mSDtfsCounter, 6 mSDsluCounter, 19824 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39658 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:43,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39658 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 15:12:43,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11987 states. [2023-12-25 15:12:43,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11987 to 11986. [2023-12-25 15:12:43,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11986 states, 11985 states have (on average 1.6651647893199832) internal successors, (19957), 11985 states have internal predecessors, (19957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:44,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11986 states to 11986 states and 19957 transitions. [2023-12-25 15:12:44,002 INFO L78 Accepts]: Start accepts. Automaton has 11986 states and 19957 transitions. Word has length 355 [2023-12-25 15:12:44,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:44,003 INFO L495 AbstractCegarLoop]: Abstraction has 11986 states and 19957 transitions. [2023-12-25 15:12:44,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:44,003 INFO L276 IsEmpty]: Start isEmpty. Operand 11986 states and 19957 transitions. [2023-12-25 15:12:44,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-12-25 15:12:44,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:44,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:44,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-25 15:12:44,220 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 [2023-12-25 15:12:44,221 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:44,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:44,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1046719027, now seen corresponding path program 1 times [2023-12-25 15:12:44,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:44,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108767378] [2023-12-25 15:12:44,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:44,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:44,415 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:12:44,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909059771] [2023-12-25 15:12:44,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:44,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:12:44,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:12:44,417 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) [2023-12-25 15:12:44,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-25 15:12:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:47,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 1965 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-25 15:12:47,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:12:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:48,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:12:48,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:48,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108767378] [2023-12-25 15:12:48,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:12:48,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909059771] [2023-12-25 15:12:48,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909059771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:48,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:48,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-25 15:12:48,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976721787] [2023-12-25 15:12:48,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:48,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 15:12:48,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:48,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 15:12:48,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-25 15:12:48,830 INFO L87 Difference]: Start difference. First operand 11986 states and 19957 transitions. Second operand has 11 states, 11 states have (on average 32.36363636363637) internal successors, (356), 11 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:50,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:50,840 INFO L93 Difference]: Finished difference Result 58984 states and 98195 transitions. [2023-12-25 15:12:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 15:12:50,840 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 32.36363636363637) internal successors, (356), 11 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2023-12-25 15:12:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:50,894 INFO L225 Difference]: With dead ends: 58984 [2023-12-25 15:12:50,895 INFO L226 Difference]: Without dead ends: 47281 [2023-12-25 15:12:50,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2023-12-25 15:12:50,908 INFO L413 NwaCegarLoop]: 20167 mSDtfsCounter, 269767 mSDsluCounter, 100711 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269767 SdHoareTripleChecker+Valid, 120878 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:50,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269767 Valid, 120878 Invalid, 325 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [8 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 15:12:50,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47281 states. [2023-12-25 15:12:51,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47281 to 11989. [2023-12-25 15:12:51,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11989 states, 11988 states have (on average 1.664914914914915) internal successors, (19959), 11988 states have internal predecessors, (19959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:51,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11989 states to 11989 states and 19959 transitions. [2023-12-25 15:12:51,190 INFO L78 Accepts]: Start accepts. Automaton has 11989 states and 19959 transitions. Word has length 356 [2023-12-25 15:12:51,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:51,191 INFO L495 AbstractCegarLoop]: Abstraction has 11989 states and 19959 transitions. [2023-12-25 15:12:51,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.36363636363637) internal successors, (356), 11 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:51,191 INFO L276 IsEmpty]: Start isEmpty. Operand 11989 states and 19959 transitions. [2023-12-25 15:12:51,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-12-25 15:12:51,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:51,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:51,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-25 15:12:51,416 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 [2023-12-25 15:12:51,417 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:51,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:51,417 INFO L85 PathProgramCache]: Analyzing trace with hash -655998083, now seen corresponding path program 1 times [2023-12-25 15:12:51,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:51,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987480594] [2023-12-25 15:12:51,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:51,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:51,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:12:51,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163401412] [2023-12-25 15:12:51,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:51,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:12:51,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:12:51,589 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) [2023-12-25 15:12:51,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-25 15:12:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:54,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 1968 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 15:12:54,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:12:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:55,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:12:55,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:55,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987480594] [2023-12-25 15:12:55,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:12:55,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163401412] [2023-12-25 15:12:55,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163401412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:55,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:55,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 15:12:55,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716300812] [2023-12-25 15:12:55,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:55,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:12:55,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:55,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:12:55,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:12:55,585 INFO L87 Difference]: Start difference. First operand 11989 states and 19959 transitions. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:56,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:56,121 INFO L93 Difference]: Finished difference Result 23695 states and 39447 transitions. [2023-12-25 15:12:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:12:56,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 357 [2023-12-25 15:12:56,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:56,134 INFO L225 Difference]: With dead ends: 23695 [2023-12-25 15:12:56,135 INFO L226 Difference]: Without dead ends: 11989 [2023-12-25 15:12:56,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:12:56,146 INFO L413 NwaCegarLoop]: 19645 mSDtfsCounter, 19566 mSDsluCounter, 19644 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19566 SdHoareTripleChecker+Valid, 39289 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:56,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19566 Valid, 39289 Invalid, 377 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:12:56,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11989 states. [2023-12-25 15:12:56,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11989 to 11989. [2023-12-25 15:12:56,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11989 states, 11988 states have (on average 1.6647480814147482) internal successors, (19957), 11988 states have internal predecessors, (19957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11989 states to 11989 states and 19957 transitions. [2023-12-25 15:12:56,295 INFO L78 Accepts]: Start accepts. Automaton has 11989 states and 19957 transitions. Word has length 357 [2023-12-25 15:12:56,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:56,296 INFO L495 AbstractCegarLoop]: Abstraction has 11989 states and 19957 transitions. [2023-12-25 15:12:56,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 11989 states and 19957 transitions. [2023-12-25 15:12:56,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-25 15:12:56,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:56,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:56,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 15:12:56,512 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 [2023-12-25 15:12:56,512 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:56,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:56,513 INFO L85 PathProgramCache]: Analyzing trace with hash -354554267, now seen corresponding path program 1 times [2023-12-25 15:12:56,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:56,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61894143] [2023-12-25 15:12:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:56,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:56,669 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:12:56,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1766191145] [2023-12-25 15:12:56,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:56,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:12:56,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:12:56,671 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) [2023-12-25 15:12:56,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-25 15:12:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:59,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 1972 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 15:12:59,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:13:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:13:00,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:13:00,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:13:00,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61894143] [2023-12-25 15:13:00,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:13:00,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766191145] [2023-12-25 15:13:00,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766191145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:13:00,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:13:00,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:13:00,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575150710] [2023-12-25 15:13:00,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:13:00,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:13:00,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:13:00,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:13:00,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:13:00,474 INFO L87 Difference]: Start difference. First operand 11989 states and 19957 transitions. Second operand has 6 states, 6 states have (on average 59.666666666666664) internal successors, (358), 5 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:01,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:13:01,133 INFO L93 Difference]: Finished difference Result 23695 states and 39443 transitions. [2023-12-25 15:13:01,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:13:01,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 59.666666666666664) internal successors, (358), 5 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2023-12-25 15:13:01,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:13:01,142 INFO L225 Difference]: With dead ends: 23695 [2023-12-25 15:13:01,142 INFO L226 Difference]: Without dead ends: 11989 [2023-12-25 15:13:01,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:13:01,152 INFO L413 NwaCegarLoop]: 19645 mSDtfsCounter, 39288 mSDsluCounter, 39288 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39288 SdHoareTripleChecker+Valid, 58933 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:13:01,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39288 Valid, 58933 Invalid, 560 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 15:13:01,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11989 states. [2023-12-25 15:13:01,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11989 to 11989. [2023-12-25 15:13:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11989 states, 11988 states have (on average 1.6645812479145812) internal successors, (19955), 11988 states have internal predecessors, (19955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11989 states to 11989 states and 19955 transitions. [2023-12-25 15:13:01,301 INFO L78 Accepts]: Start accepts. Automaton has 11989 states and 19955 transitions. Word has length 358 [2023-12-25 15:13:01,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:13:01,301 INFO L495 AbstractCegarLoop]: Abstraction has 11989 states and 19955 transitions. [2023-12-25 15:13:01,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.666666666666664) internal successors, (358), 5 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 11989 states and 19955 transitions. [2023-12-25 15:13:01,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-25 15:13:01,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:13:01,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:13:01,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-25 15:13:01,524 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 [2023-12-25 15:13:01,524 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:13:01,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:13:01,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1121307645, now seen corresponding path program 1 times [2023-12-25 15:13:01,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:13:01,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051887410] [2023-12-25 15:13:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:01,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:13:01,700 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:13:01,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189103341] [2023-12-25 15:13:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:01,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:13:01,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:13:01,702 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) [2023-12-25 15:13:01,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-25 15:13:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:13:04,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 1975 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 15:13:05,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:13:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:13:05,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:13:05,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:13:05,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051887410] [2023-12-25 15:13:05,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:13:05,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189103341] [2023-12-25 15:13:05,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189103341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:13:05,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:13:05,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:13:05,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225176603] [2023-12-25 15:13:05,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:13:05,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:13:05,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:13:05,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:13:05,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:13:05,420 INFO L87 Difference]: Start difference. First operand 11989 states and 19955 transitions. Second operand has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:06,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:13:06,086 INFO L93 Difference]: Finished difference Result 23695 states and 39439 transitions. [2023-12-25 15:13:06,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:13:06,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 359 [2023-12-25 15:13:06,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:13:06,095 INFO L225 Difference]: With dead ends: 23695 [2023-12-25 15:13:06,095 INFO L226 Difference]: Without dead ends: 11989 [2023-12-25 15:13:06,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:13:06,105 INFO L413 NwaCegarLoop]: 19645 mSDtfsCounter, 19777 mSDsluCounter, 39288 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19777 SdHoareTripleChecker+Valid, 58933 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:13:06,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19777 Valid, 58933 Invalid, 558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 15:13:06,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11989 states. [2023-12-25 15:13:06,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11989 to 11989. [2023-12-25 15:13:06,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11989 states, 11988 states have (on average 1.6644144144144144) internal successors, (19953), 11988 states have internal predecessors, (19953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11989 states to 11989 states and 19953 transitions. [2023-12-25 15:13:06,244 INFO L78 Accepts]: Start accepts. Automaton has 11989 states and 19953 transitions. Word has length 359 [2023-12-25 15:13:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:13:06,245 INFO L495 AbstractCegarLoop]: Abstraction has 11989 states and 19953 transitions. [2023-12-25 15:13:06,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:06,245 INFO L276 IsEmpty]: Start isEmpty. Operand 11989 states and 19953 transitions. [2023-12-25 15:13:06,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-25 15:13:06,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:13:06,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:13:06,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-25 15:13:06,447 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 [2023-12-25 15:13:06,448 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:13:06,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:13:06,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1396067259, now seen corresponding path program 1 times [2023-12-25 15:13:06,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:13:06,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918376676] [2023-12-25 15:13:06,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:06,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:13:06,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:13:06,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749899632] [2023-12-25 15:13:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:06,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:13:06,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:13:06,598 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) [2023-12-25 15:13:06,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-25 15:13:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:13:09,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 1976 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 15:13:09,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:13:10,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:13:10,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:13:10,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:13:10,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918376676] [2023-12-25 15:13:10,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:13:10,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749899632] [2023-12-25 15:13:10,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749899632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:13:10,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:13:10,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 15:13:10,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255272214] [2023-12-25 15:13:10,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:13:10,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:13:10,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:13:10,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:13:10,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:13:10,548 INFO L87 Difference]: Start difference. First operand 11989 states and 19953 transitions. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:10,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:13:10,943 INFO L93 Difference]: Finished difference Result 23695 states and 39435 transitions. [2023-12-25 15:13:10,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:13:10,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 359 [2023-12-25 15:13:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:13:10,963 INFO L225 Difference]: With dead ends: 23695 [2023-12-25 15:13:10,963 INFO L226 Difference]: Without dead ends: 11989 [2023-12-25 15:13:10,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:13:10,977 INFO L413 NwaCegarLoop]: 19665 mSDtfsCounter, 19584 mSDsluCounter, 19664 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19584 SdHoareTripleChecker+Valid, 39329 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:13:10,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19584 Valid, 39329 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:13:10,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11989 states. [2023-12-25 15:13:11,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11989 to 11989. [2023-12-25 15:13:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11989 states, 11988 states have (on average 1.6642475809142476) internal successors, (19951), 11988 states have internal predecessors, (19951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:11,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11989 states to 11989 states and 19951 transitions. [2023-12-25 15:13:11,354 INFO L78 Accepts]: Start accepts. Automaton has 11989 states and 19951 transitions. Word has length 359 [2023-12-25 15:13:11,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:13:11,355 INFO L495 AbstractCegarLoop]: Abstraction has 11989 states and 19951 transitions. [2023-12-25 15:13:11,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:11,355 INFO L276 IsEmpty]: Start isEmpty. Operand 11989 states and 19951 transitions. [2023-12-25 15:13:11,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-12-25 15:13:11,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:13:11,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:13:11,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-25 15:13:11,569 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 [2023-12-25 15:13:11,569 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:13:11,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:13:11,570 INFO L85 PathProgramCache]: Analyzing trace with hash 911440961, now seen corresponding path program 1 times [2023-12-25 15:13:11,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:13:11,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166350370] [2023-12-25 15:13:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:11,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:13:11,717 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:13:11,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281602397] [2023-12-25 15:13:11,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:11,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:13:11,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:13:11,719 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) [2023-12-25 15:13:11,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-25 15:13:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:13:15,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 15:13:15,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:13:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:13:15,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:13:15,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:13:15,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166350370] [2023-12-25 15:13:15,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:13:15,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281602397] [2023-12-25 15:13:15,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281602397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:13:15,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:13:15,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:13:15,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990912276] [2023-12-25 15:13:15,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:13:15,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:13:15,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:13:15,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:13:15,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:13:15,452 INFO L87 Difference]: Start difference. First operand 11989 states and 19951 transitions. Second operand has 6 states, 6 states have (on average 60.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:16,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:13:16,059 INFO L93 Difference]: Finished difference Result 23695 states and 39431 transitions. [2023-12-25 15:13:16,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:13:16,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 60.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 360 [2023-12-25 15:13:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:13:16,069 INFO L225 Difference]: With dead ends: 23695 [2023-12-25 15:13:16,069 INFO L226 Difference]: Without dead ends: 11989 [2023-12-25 15:13:16,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:13:16,075 INFO L413 NwaCegarLoop]: 19665 mSDtfsCounter, 19773 mSDsluCounter, 39328 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19773 SdHoareTripleChecker+Valid, 58993 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:13:16,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19773 Valid, 58993 Invalid, 488 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:13:16,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11989 states. [2023-12-25 15:13:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11989 to 11989. [2023-12-25 15:13:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11989 states, 11988 states have (on average 1.6640807474140809) internal successors, (19949), 11988 states have internal predecessors, (19949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11989 states to 11989 states and 19949 transitions. [2023-12-25 15:13:16,192 INFO L78 Accepts]: Start accepts. Automaton has 11989 states and 19949 transitions. Word has length 360 [2023-12-25 15:13:16,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:13:16,192 INFO L495 AbstractCegarLoop]: Abstraction has 11989 states and 19949 transitions. [2023-12-25 15:13:16,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:16,193 INFO L276 IsEmpty]: Start isEmpty. Operand 11989 states and 19949 transitions. [2023-12-25 15:13:16,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-25 15:13:16,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:13:16,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:13:16,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-25 15:13:16,397 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 [2023-12-25 15:13:16,397 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:13:16,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:13:16,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1757368289, now seen corresponding path program 1 times [2023-12-25 15:13:16,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:13:16,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389706940] [2023-12-25 15:13:16,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:16,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:13:16,550 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:13:16,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286387136] [2023-12-25 15:13:16,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:16,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:13:16,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:13:16,554 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) [2023-12-25 15:13:16,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-25 15:13:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:13:19,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 1983 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 15:13:19,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:13:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:13:20,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:13:20,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:13:20,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389706940] [2023-12-25 15:13:20,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:13:20,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286387136] [2023-12-25 15:13:20,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286387136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:13:20,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:13:20,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:13:20,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542873219] [2023-12-25 15:13:20,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:13:20,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:13:20,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:13:20,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:13:20,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:13:20,288 INFO L87 Difference]: Start difference. First operand 11989 states and 19949 transitions. Second operand has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 5 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:20,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:13:20,907 INFO L93 Difference]: Finished difference Result 23695 states and 39427 transitions. [2023-12-25 15:13:20,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:13:20,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 5 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 361 [2023-12-25 15:13:20,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:13:20,916 INFO L225 Difference]: With dead ends: 23695 [2023-12-25 15:13:20,916 INFO L226 Difference]: Without dead ends: 11989 [2023-12-25 15:13:20,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:13:20,922 INFO L413 NwaCegarLoop]: 19665 mSDtfsCounter, 19770 mSDsluCounter, 39328 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19770 SdHoareTripleChecker+Valid, 58993 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:13:20,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19770 Valid, 58993 Invalid, 486 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:13:20,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11989 states. [2023-12-25 15:13:21,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11989 to 11989. [2023-12-25 15:13:21,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11989 states, 11988 states have (on average 1.6639139139139139) internal successors, (19947), 11988 states have internal predecessors, (19947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11989 states to 11989 states and 19947 transitions. [2023-12-25 15:13:21,034 INFO L78 Accepts]: Start accepts. Automaton has 11989 states and 19947 transitions. Word has length 361 [2023-12-25 15:13:21,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:13:21,034 INFO L495 AbstractCegarLoop]: Abstraction has 11989 states and 19947 transitions. [2023-12-25 15:13:21,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 5 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:21,034 INFO L276 IsEmpty]: Start isEmpty. Operand 11989 states and 19947 transitions. [2023-12-25 15:13:21,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-25 15:13:21,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:13:21,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:13:21,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-25 15:13:21,237 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 [2023-12-25 15:13:21,237 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:13:21,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:13:21,238 INFO L85 PathProgramCache]: Analyzing trace with hash -2093698333, now seen corresponding path program 1 times [2023-12-25 15:13:21,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:13:21,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127241127] [2023-12-25 15:13:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:21,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:13:21,426 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:13:21,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055368035] [2023-12-25 15:13:21,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:21,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:13:21,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:13:21,428 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) [2023-12-25 15:13:21,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-25 15:13:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:13:24,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 1984 conjuncts, 119 conjunts are in the unsatisfiable core [2023-12-25 15:13:24,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:13:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:13:26,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:13:26,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:13:26,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127241127] [2023-12-25 15:13:26,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:13:26,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055368035] [2023-12-25 15:13:26,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055368035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:13:26,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:13:26,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-12-25 15:13:26,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031331188] [2023-12-25 15:13:26,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:13:26,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-25 15:13:26,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:13:26,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-25 15:13:26,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2023-12-25 15:13:26,816 INFO L87 Difference]: Start difference. First operand 11989 states and 19947 transitions. Second operand has 24 states, 24 states have (on average 15.041666666666666) internal successors, (361), 23 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:14:16,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:14:16,375 INFO L93 Difference]: Finished difference Result 433603 states and 721263 transitions. [2023-12-25 15:14:16,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 338 states. [2023-12-25 15:14:16,376 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 15.041666666666666) internal successors, (361), 23 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 361 [2023-12-25 15:14:16,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:14:16,766 INFO L225 Difference]: With dead ends: 433603 [2023-12-25 15:14:16,766 INFO L226 Difference]: Without dead ends: 421897 [2023-12-25 15:14:16,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56351 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=10524, Invalid=116568, Unknown=0, NotChecked=0, Total=127092 [2023-12-25 15:14:16,856 INFO L413 NwaCegarLoop]: 19190 mSDtfsCounter, 3575552 mSDsluCounter, 325555 mSDsCounter, 0 mSdLazyCounter, 17925 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3575552 SdHoareTripleChecker+Valid, 344745 SdHoareTripleChecker+Invalid, 17952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.4s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 17925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-12-25 15:14:16,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3575552 Valid, 344745 Invalid, 17952 Unknown, 0 Unchecked, 2.4s Time], IncrementalHoareTripleChecker [27 Valid, 17925 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2023-12-25 15:14:17,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421897 states. [2023-12-25 15:14:18,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421897 to 12024. [2023-12-25 15:14:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12024 states, 12023 states have (on average 1.662896115778092) internal successors, (19993), 12023 states have internal predecessors, (19993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:14:18,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12024 states to 12024 states and 19993 transitions. [2023-12-25 15:14:18,434 INFO L78 Accepts]: Start accepts. Automaton has 12024 states and 19993 transitions. Word has length 361 [2023-12-25 15:14:18,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:14:18,435 INFO L495 AbstractCegarLoop]: Abstraction has 12024 states and 19993 transitions. [2023-12-25 15:14:18,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.041666666666666) internal successors, (361), 23 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:14:18,435 INFO L276 IsEmpty]: Start isEmpty. Operand 12024 states and 19993 transitions. [2023-12-25 15:14:18,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-25 15:14:18,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:14:18,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:14:18,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-25 15:14:18,637 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 [2023-12-25 15:14:18,637 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:14:18,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:14:18,638 INFO L85 PathProgramCache]: Analyzing trace with hash 918990791, now seen corresponding path program 1 times [2023-12-25 15:14:18,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:14:18,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807811049] [2023-12-25 15:14:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:14:18,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:14:18,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:14:18,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322676308] [2023-12-25 15:14:18,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:14:18,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:14:18,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:14:18,791 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) [2023-12-25 15:14:18,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-25 15:14:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:14:22,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 114 conjunts are in the unsatisfiable core [2023-12-25 15:14:22,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:14:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:14:23,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:14:23,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:14:23,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807811049] [2023-12-25 15:14:23,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:14:23,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322676308] [2023-12-25 15:14:23,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322676308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:14:23,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:14:23,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-25 15:14:23,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209683482] [2023-12-25 15:14:23,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:14:23,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 15:14:23,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:14:23,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 15:14:23,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-25 15:14:23,143 INFO L87 Difference]: Start difference. First operand 12024 states and 19993 transitions. Second operand has 17 states, 17 states have (on average 21.235294117647058) internal successors, (361), 16 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:14:31,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:14:31,683 INFO L93 Difference]: Finished difference Result 82387 states and 136976 transitions. [2023-12-25 15:14:31,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-25 15:14:31,683 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 21.235294117647058) internal successors, (361), 16 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 361 [2023-12-25 15:14:31,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:14:31,733 INFO L225 Difference]: With dead ends: 82387 [2023-12-25 15:14:31,733 INFO L226 Difference]: Without dead ends: 70646 [2023-12-25 15:14:31,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=542, Invalid=2110, Unknown=0, NotChecked=0, Total=2652 [2023-12-25 15:14:31,745 INFO L413 NwaCegarLoop]: 19235 mSDtfsCounter, 424650 mSDsluCounter, 212546 mSDsCounter, 0 mSdLazyCounter, 8764 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424650 SdHoareTripleChecker+Valid, 231781 SdHoareTripleChecker+Invalid, 8766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:14:31,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424650 Valid, 231781 Invalid, 8766 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [2 Valid, 8764 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-25 15:14:31,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70646 states. [2023-12-25 15:14:31,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70646 to 12066. [2023-12-25 15:14:31,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12066 states, 12065 states have (on average 1.6620803978450063) internal successors, (20053), 12065 states have internal predecessors, (20053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:14:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12066 states to 12066 states and 20053 transitions. [2023-12-25 15:14:31,990 INFO L78 Accepts]: Start accepts. Automaton has 12066 states and 20053 transitions. Word has length 361 [2023-12-25 15:14:31,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:14:31,990 INFO L495 AbstractCegarLoop]: Abstraction has 12066 states and 20053 transitions. [2023-12-25 15:14:31,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.235294117647058) internal successors, (361), 16 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:14:31,991 INFO L276 IsEmpty]: Start isEmpty. Operand 12066 states and 20053 transitions. [2023-12-25 15:14:31,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-25 15:14:31,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:14:31,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:14:32,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-25 15:14:32,193 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 [2023-12-25 15:14:32,193 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:14:32,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:14:32,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2138329069, now seen corresponding path program 1 times [2023-12-25 15:14:32,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:14:32,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069100622] [2023-12-25 15:14:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:14:32,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:14:32,346 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:14:32,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75738347] [2023-12-25 15:14:32,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:14:32,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:14:32,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:14:32,347 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) [2023-12-25 15:14:32,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-25 15:14:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:14:35,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 81 conjunts are in the unsatisfiable core [2023-12-25 15:14:35,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:14:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:14:37,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:14:37,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:14:37,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069100622] [2023-12-25 15:14:37,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:14:37,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75738347] [2023-12-25 15:14:37,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75738347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:14:37,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:14:37,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 15:14:37,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100448671] [2023-12-25 15:14:37,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:14:37,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 15:14:37,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:14:37,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 15:14:37,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 15:14:37,667 INFO L87 Difference]: Start difference. First operand 12066 states and 20053 transitions. Second operand has 13 states, 13 states have (on average 27.76923076923077) internal successors, (361), 12 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:15:17,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:15:17,086 INFO L93 Difference]: Finished difference Result 47427 states and 78811 transitions. [2023-12-25 15:15:17,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-25 15:15:17,086 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.76923076923077) internal successors, (361), 12 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 361 [2023-12-25 15:15:17,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:15:17,108 INFO L225 Difference]: With dead ends: 47427 [2023-12-25 15:15:17,109 INFO L226 Difference]: Without dead ends: 35644 [2023-12-25 15:15:17,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=238, Invalid=818, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 15:15:17,117 INFO L413 NwaCegarLoop]: 30995 mSDtfsCounter, 135589 mSDsluCounter, 231847 mSDsCounter, 0 mSdLazyCounter, 71668 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135589 SdHoareTripleChecker+Valid, 262842 SdHoareTripleChecker+Invalid, 71672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2023-12-25 15:15:17,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135589 Valid, 262842 Invalid, 71672 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [4 Valid, 71668 Invalid, 0 Unknown, 0 Unchecked, 37.2s Time] [2023-12-25 15:15:17,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35644 states. [2023-12-25 15:15:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35644 to 12076. [2023-12-25 15:15:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12076 states, 12075 states have (on average 1.6616977225672878) internal successors, (20065), 12075 states have internal predecessors, (20065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:15:17,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12076 states to 12076 states and 20065 transitions. [2023-12-25 15:15:17,284 INFO L78 Accepts]: Start accepts. Automaton has 12076 states and 20065 transitions. Word has length 361 [2023-12-25 15:15:17,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:15:17,285 INFO L495 AbstractCegarLoop]: Abstraction has 12076 states and 20065 transitions. [2023-12-25 15:15:17,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.76923076923077) internal successors, (361), 12 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:15:17,285 INFO L276 IsEmpty]: Start isEmpty. Operand 12076 states and 20065 transitions. [2023-12-25 15:15:17,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-25 15:15:17,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:15:17,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:15:17,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-25 15:15:17,487 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 [2023-12-25 15:15:17,487 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:15:17,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:15:17,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1954814293, now seen corresponding path program 1 times [2023-12-25 15:15:17,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:15:17,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307168168] [2023-12-25 15:15:17,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:15:17,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:15:17,633 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:15:17,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670694988] [2023-12-25 15:15:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:15:17,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:15:17,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:15:17,636 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) [2023-12-25 15:15:17,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-25 15:15:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:15:20,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 1986 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-25 15:15:20,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:15:22,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:15:22,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:15:22,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:15:22,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307168168] [2023-12-25 15:15:22,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:15:22,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670694988] [2023-12-25 15:15:22,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670694988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:15:22,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:15:22,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 15:15:22,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931671247] [2023-12-25 15:15:22,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:15:22,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 15:15:22,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:15:22,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 15:15:22,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 15:15:22,815 INFO L87 Difference]: Start difference. First operand 12076 states and 20065 transitions. Second operand has 11 states, 11 states have (on average 32.81818181818182) internal successors, (361), 10 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:15:41,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:15:41,368 INFO L93 Difference]: Finished difference Result 35659 states and 59248 transitions. [2023-12-25 15:15:41,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 15:15:41,368 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 32.81818181818182) internal successors, (361), 10 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 361 [2023-12-25 15:15:41,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:15:41,389 INFO L225 Difference]: With dead ends: 35659 [2023-12-25 15:15:41,389 INFO L226 Difference]: Without dead ends: 23866 [2023-12-25 15:15:41,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2023-12-25 15:15:41,397 INFO L413 NwaCegarLoop]: 15753 mSDtfsCounter, 135574 mSDsluCounter, 94162 mSDsCounter, 0 mSdLazyCounter, 30308 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135574 SdHoareTripleChecker+Valid, 109915 SdHoareTripleChecker+Invalid, 30311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2023-12-25 15:15:41,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135574 Valid, 109915 Invalid, 30311 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3 Valid, 30308 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2023-12-25 15:15:41,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23866 states. [2023-12-25 15:15:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23866 to 12078. [2023-12-25 15:15:41,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12078 states, 12077 states have (on average 1.6615881427506831) internal successors, (20067), 12077 states have internal predecessors, (20067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:15:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12078 states to 12078 states and 20067 transitions. [2023-12-25 15:15:41,538 INFO L78 Accepts]: Start accepts. Automaton has 12078 states and 20067 transitions. Word has length 361 [2023-12-25 15:15:41,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:15:41,538 INFO L495 AbstractCegarLoop]: Abstraction has 12078 states and 20067 transitions. [2023-12-25 15:15:41,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.81818181818182) internal successors, (361), 10 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:15:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 12078 states and 20067 transitions. [2023-12-25 15:15:41,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-12-25 15:15:41,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:15:41,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:15:41,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-25 15:15:41,761 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 [2023-12-25 15:15:41,762 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:15:41,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:15:41,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1503197131, now seen corresponding path program 1 times [2023-12-25 15:15:41,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:15:41,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397080999] [2023-12-25 15:15:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:15:41,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:15:41,904 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:15:41,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165604947] [2023-12-25 15:15:41,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:15:41,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:15:41,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:15:41,906 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) [2023-12-25 15:15:41,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-25 15:15:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:15:45,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 1989 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 15:15:45,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:15:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:15:45,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:15:45,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:15:45,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397080999] [2023-12-25 15:15:45,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:15:45,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165604947] [2023-12-25 15:15:45,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165604947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:15:45,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:15:45,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 15:15:45,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453488782] [2023-12-25 15:15:45,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:15:45,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 15:15:45,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:15:45,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 15:15:45,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:15:45,843 INFO L87 Difference]: Start difference. First operand 12078 states and 20067 transitions. Second operand has 9 states, 9 states have (on average 40.22222222222222) internal successors, (362), 8 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:15:51,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:15:51,757 INFO L93 Difference]: Finished difference Result 24267 states and 40261 transitions. [2023-12-25 15:15:51,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 15:15:51,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 40.22222222222222) internal successors, (362), 8 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 362 [2023-12-25 15:15:51,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:15:51,769 INFO L225 Difference]: With dead ends: 24267 [2023-12-25 15:15:51,770 INFO L226 Difference]: Without dead ends: 12472 [2023-12-25 15:15:51,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-25 15:15:51,779 INFO L413 NwaCegarLoop]: 17888 mSDtfsCounter, 77515 mSDsluCounter, 38477 mSDsCounter, 0 mSdLazyCounter, 7315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77515 SdHoareTripleChecker+Valid, 56365 SdHoareTripleChecker+Invalid, 7317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:15:51,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77515 Valid, 56365 Invalid, 7317 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 7315 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-25 15:15:51,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12472 states. [2023-12-25 15:15:51,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12472 to 12081. [2023-12-25 15:15:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12081 states, 12080 states have (on average 1.6614238410596027) internal successors, (20070), 12080 states have internal predecessors, (20070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:15:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12081 states to 12081 states and 20070 transitions. [2023-12-25 15:15:51,895 INFO L78 Accepts]: Start accepts. Automaton has 12081 states and 20070 transitions. Word has length 362 [2023-12-25 15:15:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:15:51,895 INFO L495 AbstractCegarLoop]: Abstraction has 12081 states and 20070 transitions. [2023-12-25 15:15:51,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 40.22222222222222) internal successors, (362), 8 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:15:51,896 INFO L276 IsEmpty]: Start isEmpty. Operand 12081 states and 20070 transitions. [2023-12-25 15:15:51,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-25 15:15:51,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:15:51,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:15:51,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-25 15:15:52,098 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 [2023-12-25 15:15:52,098 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:15:52,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:15:52,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1998822699, now seen corresponding path program 1 times [2023-12-25 15:15:52,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:15:52,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653607450] [2023-12-25 15:15:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:15:52,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:15:52,249 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:15:52,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872137864] [2023-12-25 15:15:52,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:15:52,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:15:52,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:15:52,251 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:15:52,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-25 15:15:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:15:55,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 1992 conjuncts, 83 conjunts are in the unsatisfiable core [2023-12-25 15:15:55,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:15:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:15:57,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:15:57,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:15:57,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653607450] [2023-12-25 15:15:57,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:15:57,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872137864] [2023-12-25 15:15:57,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872137864] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:15:57,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:15:57,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-25 15:15:57,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078840306] [2023-12-25 15:15:57,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:15:57,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 15:15:57,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:15:57,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 15:15:57,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-12-25 15:15:57,960 INFO L87 Difference]: Start difference. First operand 12081 states and 20070 transitions. Second operand has 16 states, 16 states have (on average 22.6875) internal successors, (363), 15 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:16:06,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:16:06,426 INFO L93 Difference]: Finished difference Result 36102 states and 59918 transitions. [2023-12-25 15:16:06,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 15:16:06,427 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.6875) internal successors, (363), 15 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 363 [2023-12-25 15:16:06,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:16:06,448 INFO L225 Difference]: With dead ends: 36102 [2023-12-25 15:16:06,448 INFO L226 Difference]: Without dead ends: 24304 [2023-12-25 15:16:06,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=918, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 15:16:06,460 INFO L413 NwaCegarLoop]: 37574 mSDtfsCounter, 116648 mSDsluCounter, 245558 mSDsCounter, 0 mSdLazyCounter, 13955 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116648 SdHoareTripleChecker+Valid, 283132 SdHoareTripleChecker+Invalid, 13959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-25 15:16:06,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116648 Valid, 283132 Invalid, 13959 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [4 Valid, 13955 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-25 15:16:06,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24304 states. [2023-12-25 15:16:06,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24304 to 12218. [2023-12-25 15:16:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12218 states, 12217 states have (on average 1.6593271670622902) internal successors, (20272), 12217 states have internal predecessors, (20272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:16:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12218 states to 12218 states and 20272 transitions. [2023-12-25 15:16:06,641 INFO L78 Accepts]: Start accepts. Automaton has 12218 states and 20272 transitions. Word has length 363 [2023-12-25 15:16:06,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:16:06,641 INFO L495 AbstractCegarLoop]: Abstraction has 12218 states and 20272 transitions. [2023-12-25 15:16:06,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.6875) internal successors, (363), 15 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:16:06,642 INFO L276 IsEmpty]: Start isEmpty. Operand 12218 states and 20272 transitions. [2023-12-25 15:16:06,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-25 15:16:06,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:16:06,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:16:06,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-25 15:16:06,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:16:06,855 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:16:06,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:16:06,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1081991487, now seen corresponding path program 1 times [2023-12-25 15:16:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:16:06,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979631591] [2023-12-25 15:16:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:16:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:16:06,997 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:16:06,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355290969] [2023-12-25 15:16:06,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:16:06,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:16:06,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:16:06,998 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:16:07,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-25 15:16:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:16:10,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 1992 conjuncts, 83 conjunts are in the unsatisfiable core [2023-12-25 15:16:10,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:16:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:16:12,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:16:12,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:16:12,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979631591] [2023-12-25 15:16:12,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:16:12,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355290969] [2023-12-25 15:16:12,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355290969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:16:12,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:16:12,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-25 15:16:12,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697717149] [2023-12-25 15:16:12,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:16:12,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 15:16:12,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:16:12,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 15:16:12,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-12-25 15:16:12,860 INFO L87 Difference]: Start difference. First operand 12218 states and 20272 transitions. Second operand has 17 states, 17 states have (on average 21.352941176470587) internal successors, (363), 16 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:16:57,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:16:57,627 INFO L93 Difference]: Finished difference Result 36091 states and 59878 transitions. [2023-12-25 15:16:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-25 15:16:57,628 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 21.352941176470587) internal successors, (363), 16 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 363 [2023-12-25 15:16:57,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:16:57,648 INFO L225 Difference]: With dead ends: 36091 [2023-12-25 15:16:57,648 INFO L226 Difference]: Without dead ends: 24156 [2023-12-25 15:16:57,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 15:16:57,656 INFO L413 NwaCegarLoop]: 30819 mSDtfsCounter, 77805 mSDsluCounter, 340040 mSDsCounter, 0 mSdLazyCounter, 100675 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77805 SdHoareTripleChecker+Valid, 370859 SdHoareTripleChecker+Invalid, 100677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.8s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.5s IncrementalHoareTripleChecker+Time [2023-12-25 15:16:57,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77805 Valid, 370859 Invalid, 100677 Unknown, 0 Unchecked, 0.8s Time], IncrementalHoareTripleChecker [2 Valid, 100675 Invalid, 0 Unknown, 0 Unchecked, 42.5s Time] [2023-12-25 15:16:57,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24156 states. [2023-12-25 15:16:57,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24156 to 12223. [2023-12-25 15:16:57,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12223 states, 12222 states have (on average 1.65922107674685) internal successors, (20279), 12222 states have internal predecessors, (20279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:16:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12223 states to 12223 states and 20279 transitions. [2023-12-25 15:16:57,793 INFO L78 Accepts]: Start accepts. Automaton has 12223 states and 20279 transitions. Word has length 363 [2023-12-25 15:16:57,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:16:57,793 INFO L495 AbstractCegarLoop]: Abstraction has 12223 states and 20279 transitions. [2023-12-25 15:16:57,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.352941176470587) internal successors, (363), 16 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:16:57,793 INFO L276 IsEmpty]: Start isEmpty. Operand 12223 states and 20279 transitions. [2023-12-25 15:16:57,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-25 15:16:57,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:16:57,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:16:57,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-25 15:16:58,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:16:58,002 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:16:58,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:16:58,003 INFO L85 PathProgramCache]: Analyzing trace with hash 70874237, now seen corresponding path program 1 times [2023-12-25 15:16:58,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:16:58,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118712580] [2023-12-25 15:16:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:16:58,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:16:58,143 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:16:58,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262146806] [2023-12-25 15:16:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:16:58,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:16:58,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:16:58,144 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:16:58,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-25 15:17:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:17:01,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 1993 conjuncts, 135 conjunts are in the unsatisfiable core [2023-12-25 15:17:01,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:17:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:17:03,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:17:03,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:17:03,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118712580] [2023-12-25 15:17:03,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:17:03,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262146806] [2023-12-25 15:17:03,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262146806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:17:03,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:17:03,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-12-25 15:17:03,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132942363] [2023-12-25 15:17:03,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:17:03,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-25 15:17:03,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:17:03,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-25 15:17:03,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2023-12-25 15:17:03,992 INFO L87 Difference]: Start difference. First operand 12223 states and 20279 transitions. Second operand has 27 states, 27 states have (on average 13.444444444444445) internal successors, (363), 26 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)