/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-35.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 13:51:13,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 13:51:13,246 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 13:51:13,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 13:51:13,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 13:51:13,270 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 13:51:13,271 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 13:51:13,272 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 13:51:13,272 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 13:51:13,272 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 13:51:13,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 13:51:13,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 13:51:13,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 13:51:13,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 13:51:13,274 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 13:51:13,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 13:51:13,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 13:51:13,274 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 13:51:13,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 13:51:13,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 13:51:13,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 13:51:13,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 13:51:13,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 13:51:13,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 13:51:13,276 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 13:51:13,276 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 13:51:13,276 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 13:51:13,276 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 13:51:13,277 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 13:51:13,277 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 13:51:13,277 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 13:51:13,277 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 13:51:13,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:51:13,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 13:51:13,278 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 13:51:13,278 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 13:51:13,278 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 13:51:13,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 13:51:13,278 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 13:51:13,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 13:51:13,278 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 13:51:13,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 13:51:13,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 13:51:13,279 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 13:51:13,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 13:51:13,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 13:51:13,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 13:51:13,460 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 13:51:13,460 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 13:51:13,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-35.i [2023-12-19 13:51:14,526 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 13:51:14,711 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 13:51:14,711 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-35.i [2023-12-19 13:51:14,721 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f531b7f7/42f74bf0ce2945509c184d92d371a8ee/FLAG487ee5fd2 [2023-12-19 13:51:14,731 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f531b7f7/42f74bf0ce2945509c184d92d371a8ee [2023-12-19 13:51:14,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 13:51:14,733 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 13:51:14,734 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 13:51:14,734 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 13:51:14,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 13:51:14,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:51:14" (1/1) ... [2023-12-19 13:51:14,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b63512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:14, skipping insertion in model container [2023-12-19 13:51:14,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:51:14" (1/1) ... [2023-12-19 13:51:14,804 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 13:51:14,920 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-35.i[916,929] [2023-12-19 13:51:15,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:51:15,088 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 13:51:15,102 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-35.i[916,929] [2023-12-19 13:51:15,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:51:15,197 INFO L206 MainTranslator]: Completed translation [2023-12-19 13:51:15,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:15 WrapperNode [2023-12-19 13:51:15,198 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 13:51:15,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 13:51:15,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 13:51:15,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 13:51:15,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:15" (1/1) ... [2023-12-19 13:51:15,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:15" (1/1) ... [2023-12-19 13:51:15,387 INFO L138 Inliner]: procedures = 26, calls = 92, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 775 [2023-12-19 13:51:15,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 13:51:15,388 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 13:51:15,388 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 13:51:15,388 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 13:51:15,403 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:15" (1/1) ... [2023-12-19 13:51:15,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:15" (1/1) ... [2023-12-19 13:51:15,452 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:15" (1/1) ... [2023-12-19 13:51:15,499 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 13:51:15,499 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:15" (1/1) ... [2023-12-19 13:51:15,499 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:15" (1/1) ... [2023-12-19 13:51:15,536 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:15" (1/1) ... [2023-12-19 13:51:15,540 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:15" (1/1) ... [2023-12-19 13:51:15,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:15" (1/1) ... [2023-12-19 13:51:15,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:15" (1/1) ... [2023-12-19 13:51:15,590 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 13:51:15,591 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 13:51:15,591 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 13:51:15,591 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 13:51:15,592 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:15" (1/1) ... [2023-12-19 13:51:15,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:51:15,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:15,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 13:51:15,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 13:51:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 13:51:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 13:51:15,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 13:51:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 13:51:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 13:51:15,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 13:51:15,792 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 13:51:15,793 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 13:51:16,518 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 13:51:16,543 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 13:51:16,543 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 13:51:16,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:51:16 BoogieIcfgContainer [2023-12-19 13:51:16,544 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 13:51:16,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 13:51:16,545 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 13:51:16,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 13:51:16,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:51:14" (1/3) ... [2023-12-19 13:51:16,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a88ddd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:51:16, skipping insertion in model container [2023-12-19 13:51:16,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:51:15" (2/3) ... [2023-12-19 13:51:16,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a88ddd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:51:16, skipping insertion in model container [2023-12-19 13:51:16,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:51:16" (3/3) ... [2023-12-19 13:51:16,549 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-35.i [2023-12-19 13:51:16,559 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 13:51:16,559 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 13:51:16,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 13:51:16,595 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;@7adbac64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 13:51:16,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 13:51:16,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 284 states, 202 states have (on average 1.5643564356435644) internal successors, (316), 203 states have internal predecessors, (316), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-19 13:51:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-19 13:51:16,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:16,645 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:16,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:16,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:16,649 INFO L85 PathProgramCache]: Analyzing trace with hash 703842177, now seen corresponding path program 1 times [2023-12-19 13:51:16,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:16,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344954040] [2023-12-19 13:51:16,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:16,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:17,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:17,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344954040] [2023-12-19 13:51:17,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 13:51:17,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916164985] [2023-12-19 13:51:17,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:17,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:17,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:17,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:17,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 13:51:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:17,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 13:51:17,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2023-12-19 13:51:17,439 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:51:17,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916164985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:51:17,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:51:17,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 13:51:17,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840205273] [2023-12-19 13:51:17,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:51:17,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 13:51:17,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:17,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 13:51:17,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:51:17,465 INFO L87 Difference]: Start difference. First operand has 284 states, 202 states have (on average 1.5643564356435644) internal successors, (316), 203 states have internal predecessors, (316), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-19 13:51:17,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:17,514 INFO L93 Difference]: Finished difference Result 559 states and 1014 transitions. [2023-12-19 13:51:17,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 13:51:17,516 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) Word has length 531 [2023-12-19 13:51:17,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:17,523 INFO L225 Difference]: With dead ends: 559 [2023-12-19 13:51:17,523 INFO L226 Difference]: Without dead ends: 276 [2023-12-19 13:51:17,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:51:17,529 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:17,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 452 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:51:17,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-19 13:51:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2023-12-19 13:51:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 195 states have (on average 1.523076923076923) internal successors, (297), 195 states have internal predecessors, (297), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-19 13:51:17,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 455 transitions. [2023-12-19 13:51:17,577 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 455 transitions. Word has length 531 [2023-12-19 13:51:17,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:51:17,578 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 455 transitions. [2023-12-19 13:51:17,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-19 13:51:17,578 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 455 transitions. [2023-12-19 13:51:17,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-19 13:51:17,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:17,588 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:17,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 13:51:17,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 13:51:17,796 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:17,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:17,797 INFO L85 PathProgramCache]: Analyzing trace with hash 373107791, now seen corresponding path program 1 times [2023-12-19 13:51:17,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:17,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63617990] [2023-12-19 13:51:17,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:17,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:17,948 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:51:17,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592042300] [2023-12-19 13:51:17,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:17,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:17,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:17,950 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:17,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 13:51:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:18,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:51:18,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:51:18,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:51:18,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:18,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63617990] [2023-12-19 13:51:18,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:51:18,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592042300] [2023-12-19 13:51:18,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592042300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:51:18,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:51:18,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:51:18,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822467172] [2023-12-19 13:51:18,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:51:18,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:51:18,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:18,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:51:18,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:51:18,391 INFO L87 Difference]: Start difference. First operand 276 states and 455 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:18,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:18,501 INFO L93 Difference]: Finished difference Result 826 states and 1363 transitions. [2023-12-19 13:51:18,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:51:18,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-19 13:51:18,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:18,510 INFO L225 Difference]: With dead ends: 826 [2023-12-19 13:51:18,510 INFO L226 Difference]: Without dead ends: 551 [2023-12-19 13:51:18,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:51:18,512 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 413 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:18,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1126 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:51:18,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-12-19 13:51:18,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 549. [2023-12-19 13:51:18,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 388 states have (on average 1.5128865979381443) internal successors, (587), 388 states have internal predecessors, (587), 158 states have call successors, (158), 2 states have call predecessors, (158), 2 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2023-12-19 13:51:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 903 transitions. [2023-12-19 13:51:18,582 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 903 transitions. Word has length 531 [2023-12-19 13:51:18,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:51:18,583 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 903 transitions. [2023-12-19 13:51:18,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 903 transitions. [2023-12-19 13:51:18,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-19 13:51:18,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:18,586 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:18,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 13:51:18,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 13:51:18,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:18,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:18,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1472259375, now seen corresponding path program 1 times [2023-12-19 13:51:18,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:18,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337416555] [2023-12-19 13:51:18,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:18,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:18,882 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:51:18,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969586471] [2023-12-19 13:51:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:18,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:18,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:18,906 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:18,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 13:51:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:19,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:51:19,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:51:19,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:51:19,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:19,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337416555] [2023-12-19 13:51:19,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:51:19,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969586471] [2023-12-19 13:51:19,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969586471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:51:19,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:51:19,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:51:19,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402418304] [2023-12-19 13:51:19,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:51:19,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:51:19,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:19,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:51:19,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:51:19,249 INFO L87 Difference]: Start difference. First operand 549 states and 903 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:19,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:19,330 INFO L93 Difference]: Finished difference Result 1457 states and 2401 transitions. [2023-12-19 13:51:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:51:19,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-19 13:51:19,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:19,336 INFO L225 Difference]: With dead ends: 1457 [2023-12-19 13:51:19,336 INFO L226 Difference]: Without dead ends: 909 [2023-12-19 13:51:19,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:51:19,340 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 298 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:19,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 897 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:51:19,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2023-12-19 13:51:19,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 905. [2023-12-19 13:51:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 680 states have (on average 1.5441176470588236) internal successors, (1050), 682 states have internal predecessors, (1050), 220 states have call successors, (220), 4 states have call predecessors, (220), 4 states have return successors, (220), 218 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-19 13:51:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1490 transitions. [2023-12-19 13:51:19,420 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1490 transitions. Word has length 531 [2023-12-19 13:51:19,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:51:19,423 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 1490 transitions. [2023-12-19 13:51:19,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:19,424 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1490 transitions. [2023-12-19 13:51:19,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-19 13:51:19,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:19,429 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:19,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 13:51:19,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:19,638 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:19,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash -73274675, now seen corresponding path program 1 times [2023-12-19 13:51:19,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:19,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312798075] [2023-12-19 13:51:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:19,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:19,688 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:51:19,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366602446] [2023-12-19 13:51:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:19,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:19,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:19,714 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:19,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 13:51:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:20,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:51:20,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:51:20,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:51:20,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:20,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312798075] [2023-12-19 13:51:20,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:51:20,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366602446] [2023-12-19 13:51:20,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366602446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:51:20,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:51:20,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:51:20,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102365991] [2023-12-19 13:51:20,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:51:20,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:51:20,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:20,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:51:20,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:51:20,033 INFO L87 Difference]: Start difference. First operand 905 states and 1490 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:20,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:20,090 INFO L93 Difference]: Finished difference Result 2405 states and 3954 transitions. [2023-12-19 13:51:20,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:51:20,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-19 13:51:20,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:20,097 INFO L225 Difference]: With dead ends: 2405 [2023-12-19 13:51:20,097 INFO L226 Difference]: Without dead ends: 1501 [2023-12-19 13:51:20,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:51:20,100 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 246 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:20,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 884 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:51:20,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2023-12-19 13:51:20,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1495. [2023-12-19 13:51:20,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1150 states have (on average 1.5478260869565217) internal successors, (1780), 1156 states have internal predecessors, (1780), 336 states have call successors, (336), 8 states have call predecessors, (336), 8 states have return successors, (336), 330 states have call predecessors, (336), 336 states have call successors, (336) [2023-12-19 13:51:20,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2452 transitions. [2023-12-19 13:51:20,178 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2452 transitions. Word has length 531 [2023-12-19 13:51:20,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:51:20,178 INFO L495 AbstractCegarLoop]: Abstraction has 1495 states and 2452 transitions. [2023-12-19 13:51:20,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:20,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2452 transitions. [2023-12-19 13:51:20,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-19 13:51:20,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:20,182 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:20,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 13:51:20,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:20,390 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:20,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:20,390 INFO L85 PathProgramCache]: Analyzing trace with hash 487425103, now seen corresponding path program 1 times [2023-12-19 13:51:20,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:20,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165478236] [2023-12-19 13:51:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:20,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:20,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:51:20,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443021311] [2023-12-19 13:51:20,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:20,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:20,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:20,461 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:20,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 13:51:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:20,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 13:51:20,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:51:21,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:51:21,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:21,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165478236] [2023-12-19 13:51:21,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:51:21,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443021311] [2023-12-19 13:51:21,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443021311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:51:21,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:51:21,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:51:21,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393373449] [2023-12-19 13:51:21,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:51:21,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:51:21,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:21,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:51:21,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:51:21,340 INFO L87 Difference]: Start difference. First operand 1495 states and 2452 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:21,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:21,786 INFO L93 Difference]: Finished difference Result 4915 states and 8076 transitions. [2023-12-19 13:51:21,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 13:51:21,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-19 13:51:21,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:21,798 INFO L225 Difference]: With dead ends: 4915 [2023-12-19 13:51:21,798 INFO L226 Difference]: Without dead ends: 3421 [2023-12-19 13:51:21,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:51:21,802 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 537 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:21,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1624 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 13:51:21,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3421 states. [2023-12-19 13:51:21,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3421 to 1683. [2023-12-19 13:51:21,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1256 states have (on average 1.5302547770700636) internal successors, (1922), 1262 states have internal predecessors, (1922), 415 states have call successors, (415), 11 states have call predecessors, (415), 11 states have return successors, (415), 409 states have call predecessors, (415), 415 states have call successors, (415) [2023-12-19 13:51:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2752 transitions. [2023-12-19 13:51:21,895 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2752 transitions. Word has length 531 [2023-12-19 13:51:21,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:51:21,896 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2752 transitions. [2023-12-19 13:51:21,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:21,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2752 transitions. [2023-12-19 13:51:21,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-19 13:51:21,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:21,912 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:21,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 13:51:22,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:22,120 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:22,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:22,120 INFO L85 PathProgramCache]: Analyzing trace with hash -650098637, now seen corresponding path program 1 times [2023-12-19 13:51:22,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:22,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097205401] [2023-12-19 13:51:22,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:22,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:22,165 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:51:22,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437776985] [2023-12-19 13:51:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:22,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:22,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:22,166 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:22,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 13:51:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:22,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 1349 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 13:51:22,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:51:22,627 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:51:22,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:22,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097205401] [2023-12-19 13:51:22,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:51:22,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437776985] [2023-12-19 13:51:22,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437776985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:51:22,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:51:22,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:51:22,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092121169] [2023-12-19 13:51:22,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:51:22,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:51:22,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:22,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:51:22,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:51:22,629 INFO L87 Difference]: Start difference. First operand 1683 states and 2752 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:22,880 INFO L93 Difference]: Finished difference Result 3795 states and 6212 transitions. [2023-12-19 13:51:22,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:51:22,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 532 [2023-12-19 13:51:22,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:22,889 INFO L225 Difference]: With dead ends: 3795 [2023-12-19 13:51:22,889 INFO L226 Difference]: Without dead ends: 2301 [2023-12-19 13:51:22,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:51:22,893 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 635 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:22,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1307 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:51:22,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2023-12-19 13:51:22,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 1431. [2023-12-19 13:51:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1126 states have (on average 1.5612788632326822) internal successors, (1758), 1128 states have internal predecessors, (1758), 295 states have call successors, (295), 9 states have call predecessors, (295), 9 states have return successors, (295), 293 states have call predecessors, (295), 295 states have call successors, (295) [2023-12-19 13:51:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2348 transitions. [2023-12-19 13:51:22,981 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2348 transitions. Word has length 532 [2023-12-19 13:51:22,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:51:22,981 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 2348 transitions. [2023-12-19 13:51:22,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:22,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2348 transitions. [2023-12-19 13:51:22,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-19 13:51:22,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:22,985 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:23,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 13:51:23,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:23,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:23,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:23,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1258359153, now seen corresponding path program 1 times [2023-12-19 13:51:23,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:23,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550157534] [2023-12-19 13:51:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:23,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:23,236 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:51:23,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167903538] [2023-12-19 13:51:23,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:23,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:23,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:23,237 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:23,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 13:51:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:23,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 13:51:23,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:51:24,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:51:24,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:24,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550157534] [2023-12-19 13:51:24,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:51:24,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167903538] [2023-12-19 13:51:24,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167903538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:51:24,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:51:24,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 13:51:24,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113058257] [2023-12-19 13:51:24,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:51:24,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:51:24,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:24,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:51:24,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:51:24,270 INFO L87 Difference]: Start difference. First operand 1431 states and 2348 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:25,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:25,659 INFO L93 Difference]: Finished difference Result 6237 states and 10182 transitions. [2023-12-19 13:51:25,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 13:51:25,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 532 [2023-12-19 13:51:25,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:25,680 INFO L225 Difference]: With dead ends: 6237 [2023-12-19 13:51:25,681 INFO L226 Difference]: Without dead ends: 4893 [2023-12-19 13:51:25,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 13:51:25,687 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 3125 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3125 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:25,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3125 Valid, 2119 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [702 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 13:51:25,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2023-12-19 13:51:25,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 2804. [2023-12-19 13:51:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2804 states, 2277 states have (on average 1.561703996486605) internal successors, (3556), 2281 states have internal predecessors, (3556), 511 states have call successors, (511), 15 states have call predecessors, (511), 15 states have return successors, (511), 507 states have call predecessors, (511), 511 states have call successors, (511) [2023-12-19 13:51:25,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 4578 transitions. [2023-12-19 13:51:25,816 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 4578 transitions. Word has length 532 [2023-12-19 13:51:25,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:51:25,817 INFO L495 AbstractCegarLoop]: Abstraction has 2804 states and 4578 transitions. [2023-12-19 13:51:25,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:25,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 4578 transitions. [2023-12-19 13:51:25,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-19 13:51:25,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:25,821 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:25,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 13:51:26,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:26,029 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:26,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:26,030 INFO L85 PathProgramCache]: Analyzing trace with hash -985624145, now seen corresponding path program 1 times [2023-12-19 13:51:26,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:26,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791608900] [2023-12-19 13:51:26,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:26,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:26,096 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:51:26,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360777638] [2023-12-19 13:51:26,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:26,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:26,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:26,126 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:26,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 13:51:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:26,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 1349 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:51:26,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:51:27,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:51:27,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:27,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791608900] [2023-12-19 13:51:27,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:51:27,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360777638] [2023-12-19 13:51:27,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360777638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:51:27,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:51:27,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:51:27,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613289850] [2023-12-19 13:51:27,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:51:27,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:51:27,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:27,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:51:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:51:27,483 INFO L87 Difference]: Start difference. First operand 2804 states and 4578 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:27,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:27,609 INFO L93 Difference]: Finished difference Result 6785 states and 11067 transitions. [2023-12-19 13:51:27,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:51:27,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 532 [2023-12-19 13:51:27,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:27,623 INFO L225 Difference]: With dead ends: 6785 [2023-12-19 13:51:27,624 INFO L226 Difference]: Without dead ends: 4171 [2023-12-19 13:51:27,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:51:27,630 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 217 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:27,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1328 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:51:27,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4171 states. [2023-12-19 13:51:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4171 to 4169. [2023-12-19 13:51:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4169 states, 3420 states have (on average 1.5567251461988305) internal successors, (5324), 3426 states have internal predecessors, (5324), 727 states have call successors, (727), 21 states have call predecessors, (727), 21 states have return successors, (727), 721 states have call predecessors, (727), 727 states have call successors, (727) [2023-12-19 13:51:27,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4169 states to 4169 states and 6778 transitions. [2023-12-19 13:51:27,773 INFO L78 Accepts]: Start accepts. Automaton has 4169 states and 6778 transitions. Word has length 532 [2023-12-19 13:51:27,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:51:27,773 INFO L495 AbstractCegarLoop]: Abstraction has 4169 states and 6778 transitions. [2023-12-19 13:51:27,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:27,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4169 states and 6778 transitions. [2023-12-19 13:51:27,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-19 13:51:27,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:27,778 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:27,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 13:51:28,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 13:51:28,001 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:28,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:28,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1398300593, now seen corresponding path program 1 times [2023-12-19 13:51:28,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:28,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676199535] [2023-12-19 13:51:28,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:28,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:28,060 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:51:28,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485403775] [2023-12-19 13:51:28,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:28,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:28,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:28,061 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:28,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 13:51:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:28,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 13:51:28,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 7640 proven. 177 refuted. 0 times theorem prover too weak. 4507 trivial. 0 not checked. [2023-12-19 13:51:29,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:51:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 57 proven. 177 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-19 13:51:29,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:29,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676199535] [2023-12-19 13:51:29,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:51:29,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485403775] [2023-12-19 13:51:29,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485403775] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:51:29,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:51:29,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 13:51:29,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867104693] [2023-12-19 13:51:29,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:51:29,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 13:51:29,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:29,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 13:51:29,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 13:51:29,602 INFO L87 Difference]: Start difference. First operand 4169 states and 6778 transitions. Second operand has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 5 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (139), 5 states have call predecessors, (139), 5 states have call successors, (139) [2023-12-19 13:51:30,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:30,688 INFO L93 Difference]: Finished difference Result 11141 states and 17974 transitions. [2023-12-19 13:51:30,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 13:51:30,697 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 5 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (139), 5 states have call predecessors, (139), 5 states have call successors, (139) Word has length 532 [2023-12-19 13:51:30,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:30,732 INFO L225 Difference]: With dead ends: 11141 [2023-12-19 13:51:30,732 INFO L226 Difference]: Without dead ends: 7169 [2023-12-19 13:51:30,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1076 GetRequests, 1054 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2023-12-19 13:51:30,744 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 1363 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:30,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 1527 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 13:51:30,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7169 states. [2023-12-19 13:51:30,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7169 to 4395. [2023-12-19 13:51:30,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 3613 states have (on average 1.5355660116246885) internal successors, (5548), 3619 states have internal predecessors, (5548), 727 states have call successors, (727), 54 states have call predecessors, (727), 54 states have return successors, (727), 721 states have call predecessors, (727), 727 states have call successors, (727) [2023-12-19 13:51:30,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 7002 transitions. [2023-12-19 13:51:30,995 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 7002 transitions. Word has length 532 [2023-12-19 13:51:30,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:51:30,996 INFO L495 AbstractCegarLoop]: Abstraction has 4395 states and 7002 transitions. [2023-12-19 13:51:30,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 5 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (139), 5 states have call predecessors, (139), 5 states have call successors, (139) [2023-12-19 13:51:30,996 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 7002 transitions. [2023-12-19 13:51:31,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-19 13:51:31,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:31,002 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:31,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 13:51:31,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:31,211 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:31,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:31,211 INFO L85 PathProgramCache]: Analyzing trace with hash 500907315, now seen corresponding path program 1 times [2023-12-19 13:51:31,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:31,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357547151] [2023-12-19 13:51:31,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:31,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:31,258 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:51:31,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129664869] [2023-12-19 13:51:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:31,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:31,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:31,274 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:31,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 13:51:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:31,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 13:51:31,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:51:32,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:51:32,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:32,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357547151] [2023-12-19 13:51:32,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:51:32,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129664869] [2023-12-19 13:51:32,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129664869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:51:32,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:51:32,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:51:32,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836701120] [2023-12-19 13:51:32,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:51:32,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:51:32,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:32,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:51:32,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:51:32,146 INFO L87 Difference]: Start difference. First operand 4395 states and 7002 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:32,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:32,481 INFO L93 Difference]: Finished difference Result 10356 states and 16544 transitions. [2023-12-19 13:51:32,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:51:32,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 532 [2023-12-19 13:51:32,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:32,494 INFO L225 Difference]: With dead ends: 10356 [2023-12-19 13:51:32,494 INFO L226 Difference]: Without dead ends: 6170 [2023-12-19 13:51:32,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:51:32,502 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 449 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:32,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1339 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:51:32,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2023-12-19 13:51:32,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 4426. [2023-12-19 13:51:32,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4426 states, 3644 states have (on average 1.5340285400658618) internal successors, (5590), 3650 states have internal predecessors, (5590), 727 states have call successors, (727), 54 states have call predecessors, (727), 54 states have return successors, (727), 721 states have call predecessors, (727), 727 states have call successors, (727) [2023-12-19 13:51:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4426 states to 4426 states and 7044 transitions. [2023-12-19 13:51:32,731 INFO L78 Accepts]: Start accepts. Automaton has 4426 states and 7044 transitions. Word has length 532 [2023-12-19 13:51:32,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:51:32,731 INFO L495 AbstractCegarLoop]: Abstraction has 4426 states and 7044 transitions. [2023-12-19 13:51:32,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:32,731 INFO L276 IsEmpty]: Start isEmpty. Operand 4426 states and 7044 transitions. [2023-12-19 13:51:32,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-19 13:51:32,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:32,736 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:32,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 13:51:32,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 13:51:32,945 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:32,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:32,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1468257969, now seen corresponding path program 1 times [2023-12-19 13:51:32,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:32,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198047324] [2023-12-19 13:51:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:32,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:32,986 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:51:32,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765931983] [2023-12-19 13:51:32,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:32,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:32,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:32,987 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:33,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 13:51:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:33,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 13:51:33,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6843 proven. 120 refuted. 0 times theorem prover too weak. 5361 trivial. 0 not checked. [2023-12-19 13:51:33,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:51:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 342 proven. 123 refuted. 0 times theorem prover too weak. 11859 trivial. 0 not checked. [2023-12-19 13:51:34,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:34,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198047324] [2023-12-19 13:51:34,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:51:34,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765931983] [2023-12-19 13:51:34,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765931983] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:51:34,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:51:34,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2023-12-19 13:51:34,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970365698] [2023-12-19 13:51:34,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:51:34,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 13:51:34,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:34,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 13:51:34,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-12-19 13:51:34,135 INFO L87 Difference]: Start difference. First operand 4426 states and 7044 transitions. Second operand has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 5 states have call successors, (116), 3 states have call predecessors, (116), 7 states have return successors, (117), 5 states have call predecessors, (117), 5 states have call successors, (117) [2023-12-19 13:51:35,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:35,827 INFO L93 Difference]: Finished difference Result 12694 states and 20101 transitions. [2023-12-19 13:51:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 13:51:35,827 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 5 states have call successors, (116), 3 states have call predecessors, (116), 7 states have return successors, (117), 5 states have call predecessors, (117), 5 states have call successors, (117) Word has length 532 [2023-12-19 13:51:35,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:35,843 INFO L225 Difference]: With dead ends: 12694 [2023-12-19 13:51:35,844 INFO L226 Difference]: Without dead ends: 8508 [2023-12-19 13:51:35,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1079 GetRequests, 1046 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=853, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 13:51:35,852 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 2564 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2605 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:35,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2605 Valid, 3195 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 13:51:35,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8508 states. [2023-12-19 13:51:36,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8508 to 8426. [2023-12-19 13:51:36,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8426 states, 7107 states have (on average 1.529055860419305) internal successors, (10867), 7129 states have internal predecessors, (10867), 1191 states have call successors, (1191), 127 states have call predecessors, (1191), 127 states have return successors, (1191), 1169 states have call predecessors, (1191), 1191 states have call successors, (1191) [2023-12-19 13:51:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8426 states to 8426 states and 13249 transitions. [2023-12-19 13:51:36,198 INFO L78 Accepts]: Start accepts. Automaton has 8426 states and 13249 transitions. Word has length 532 [2023-12-19 13:51:36,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:51:36,199 INFO L495 AbstractCegarLoop]: Abstraction has 8426 states and 13249 transitions. [2023-12-19 13:51:36,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 5 states have call successors, (116), 3 states have call predecessors, (116), 7 states have return successors, (117), 5 states have call predecessors, (117), 5 states have call successors, (117) [2023-12-19 13:51:36,199 INFO L276 IsEmpty]: Start isEmpty. Operand 8426 states and 13249 transitions. [2023-12-19 13:51:36,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-12-19 13:51:36,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:36,204 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:36,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 13:51:36,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 13:51:36,411 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:36,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:36,412 INFO L85 PathProgramCache]: Analyzing trace with hash 715263767, now seen corresponding path program 1 times [2023-12-19 13:51:36,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:36,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5999602] [2023-12-19 13:51:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:36,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:36,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:51:36,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469546591] [2023-12-19 13:51:36,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:36,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:36,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:36,453 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:36,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 13:51:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:36,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 13:51:36,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:37,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:51:37,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:51:37,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:37,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5999602] [2023-12-19 13:51:37,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:51:37,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469546591] [2023-12-19 13:51:37,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469546591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:51:37,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:51:37,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:51:37,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134872157] [2023-12-19 13:51:37,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:51:37,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:51:37,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:37,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:51:37,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:51:37,915 INFO L87 Difference]: Start difference. First operand 8426 states and 13249 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:39,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:39,314 INFO L93 Difference]: Finished difference Result 40580 states and 64170 transitions. [2023-12-19 13:51:39,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 13:51:39,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 534 [2023-12-19 13:51:39,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:39,366 INFO L225 Difference]: With dead ends: 40580 [2023-12-19 13:51:39,366 INFO L226 Difference]: Without dead ends: 32406 [2023-12-19 13:51:39,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 13:51:39,385 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 1431 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1978 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:39,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 1978 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 13:51:39,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32406 states. [2023-12-19 13:51:40,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32406 to 28092. [2023-12-19 13:51:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28092 states, 24313 states have (on average 1.5440710730884712) internal successors, (37541), 24379 states have internal predecessors, (37541), 3415 states have call successors, (3415), 363 states have call predecessors, (3415), 363 states have return successors, (3415), 3349 states have call predecessors, (3415), 3415 states have call successors, (3415) [2023-12-19 13:51:40,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28092 states to 28092 states and 44371 transitions. [2023-12-19 13:51:40,669 INFO L78 Accepts]: Start accepts. Automaton has 28092 states and 44371 transitions. Word has length 534 [2023-12-19 13:51:40,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:51:40,669 INFO L495 AbstractCegarLoop]: Abstraction has 28092 states and 44371 transitions. [2023-12-19 13:51:40,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:40,669 INFO L276 IsEmpty]: Start isEmpty. Operand 28092 states and 44371 transitions. [2023-12-19 13:51:40,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-12-19 13:51:40,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:40,680 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:40,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 13:51:40,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 13:51:40,889 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:40,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:40,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1159164441, now seen corresponding path program 1 times [2023-12-19 13:51:40,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:40,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080120093] [2023-12-19 13:51:40,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:40,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:40,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:51:40,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904672127] [2023-12-19 13:51:40,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:40,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:40,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:40,952 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:40,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 13:51:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:41,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 13:51:41,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:51:41,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:51:41,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:41,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080120093] [2023-12-19 13:51:41,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:51:41,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904672127] [2023-12-19 13:51:41,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904672127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:51:41,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:51:41,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:51:41,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192372094] [2023-12-19 13:51:41,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:51:41,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:51:41,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:41,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:51:41,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:51:41,374 INFO L87 Difference]: Start difference. First operand 28092 states and 44371 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:42,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:42,502 INFO L93 Difference]: Finished difference Result 62579 states and 99174 transitions. [2023-12-19 13:51:42,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 13:51:42,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 534 [2023-12-19 13:51:42,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:42,559 INFO L225 Difference]: With dead ends: 62579 [2023-12-19 13:51:42,559 INFO L226 Difference]: Without dead ends: 34002 [2023-12-19 13:51:42,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:51:42,586 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 455 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:42,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1348 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:51:42,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34002 states. [2023-12-19 13:51:43,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34002 to 33332. [2023-12-19 13:51:43,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33332 states, 29791 states have (on average 1.5647007485482192) internal successors, (46614), 29855 states have internal predecessors, (46614), 3199 states have call successors, (3199), 341 states have call predecessors, (3199), 341 states have return successors, (3199), 3135 states have call predecessors, (3199), 3199 states have call successors, (3199) [2023-12-19 13:51:43,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33332 states to 33332 states and 53012 transitions. [2023-12-19 13:51:43,847 INFO L78 Accepts]: Start accepts. Automaton has 33332 states and 53012 transitions. Word has length 534 [2023-12-19 13:51:43,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:51:43,849 INFO L495 AbstractCegarLoop]: Abstraction has 33332 states and 53012 transitions. [2023-12-19 13:51:43,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:43,849 INFO L276 IsEmpty]: Start isEmpty. Operand 33332 states and 53012 transitions. [2023-12-19 13:51:43,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-12-19 13:51:43,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:43,860 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:43,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 13:51:44,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 13:51:44,068 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:44,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:44,068 INFO L85 PathProgramCache]: Analyzing trace with hash -607079494, now seen corresponding path program 1 times [2023-12-19 13:51:44,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:44,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102404217] [2023-12-19 13:51:44,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:44,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:44,113 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:51:44,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041823939] [2023-12-19 13:51:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:44,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:44,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:44,114 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:44,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 13:51:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:44,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 13:51:44,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:51:45,545 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:51:45,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:45,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102404217] [2023-12-19 13:51:45,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:51:45,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041823939] [2023-12-19 13:51:45,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041823939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:51:45,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:51:45,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:51:45,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453644398] [2023-12-19 13:51:45,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:51:45,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:51:45,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:45,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:51:45,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:51:45,548 INFO L87 Difference]: Start difference. First operand 33332 states and 53012 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:47,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:47,668 INFO L93 Difference]: Finished difference Result 96664 states and 153694 transitions. [2023-12-19 13:51:47,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 13:51:47,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 535 [2023-12-19 13:51:47,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:47,845 INFO L225 Difference]: With dead ends: 96664 [2023-12-19 13:51:47,846 INFO L226 Difference]: Without dead ends: 63584 [2023-12-19 13:51:47,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:51:47,881 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 1012 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:47,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 2148 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 13:51:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63584 states. [2023-12-19 13:51:50,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63584 to 51817. [2023-12-19 13:51:50,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51817 states, 45816 states have (on average 1.5550899249170596) internal successors, (71248), 45924 states have internal predecessors, (71248), 5423 states have call successors, (5423), 577 states have call predecessors, (5423), 577 states have return successors, (5423), 5315 states have call predecessors, (5423), 5423 states have call successors, (5423) [2023-12-19 13:51:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51817 states to 51817 states and 82094 transitions. [2023-12-19 13:51:50,198 INFO L78 Accepts]: Start accepts. Automaton has 51817 states and 82094 transitions. Word has length 535 [2023-12-19 13:51:50,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:51:50,199 INFO L495 AbstractCegarLoop]: Abstraction has 51817 states and 82094 transitions. [2023-12-19 13:51:50,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:50,199 INFO L276 IsEmpty]: Start isEmpty. Operand 51817 states and 82094 transitions. [2023-12-19 13:51:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-12-19 13:51:50,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:50,208 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:50,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-19 13:51:50,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:50,416 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:50,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:50,417 INFO L85 PathProgramCache]: Analyzing trace with hash -163178820, now seen corresponding path program 1 times [2023-12-19 13:51:50,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:50,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008877508] [2023-12-19 13:51:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:50,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:50,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:51:50,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356331117] [2023-12-19 13:51:50,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:50,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:50,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:50,478 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:50,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 13:51:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:50,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 13:51:50,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-19 13:51:51,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:51:51,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:51,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008877508] [2023-12-19 13:51:51,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:51:51,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356331117] [2023-12-19 13:51:51,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356331117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:51:51,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:51:51,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:51:51,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626594126] [2023-12-19 13:51:51,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:51:51,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:51:51,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:51,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:51:51,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:51:51,462 INFO L87 Difference]: Start difference. First operand 51817 states and 82094 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:51:56,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:56,526 INFO L93 Difference]: Finished difference Result 198860 states and 315061 transitions. [2023-12-19 13:51:56,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 13:51:56,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 535 [2023-12-19 13:51:56,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:56,905 INFO L225 Difference]: With dead ends: 198860 [2023-12-19 13:51:56,905 INFO L226 Difference]: Without dead ends: 147295 [2023-12-19 13:51:57,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:51:57,040 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 445 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:57,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1497 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:51:57,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147295 states. [2023-12-19 13:52:02,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147295 to 147081. [2023-12-19 13:52:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147081 states, 131248 states have (on average 1.5559322808728513) internal successors, (204213), 131600 states have internal predecessors, (204213), 14279 states have call successors, (14279), 1553 states have call predecessors, (14279), 1553 states have return successors, (14279), 13927 states have call predecessors, (14279), 14279 states have call successors, (14279) [2023-12-19 13:52:03,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147081 states to 147081 states and 232771 transitions. [2023-12-19 13:52:03,219 INFO L78 Accepts]: Start accepts. Automaton has 147081 states and 232771 transitions. Word has length 535 [2023-12-19 13:52:03,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:52:03,220 INFO L495 AbstractCegarLoop]: Abstraction has 147081 states and 232771 transitions. [2023-12-19 13:52:03,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-19 13:52:03,220 INFO L276 IsEmpty]: Start isEmpty. Operand 147081 states and 232771 transitions. [2023-12-19 13:52:03,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-12-19 13:52:03,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:52:03,245 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:52:03,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-19 13:52:03,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 13:52:03,453 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:52:03,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:52:03,454 INFO L85 PathProgramCache]: Analyzing trace with hash 234546628, now seen corresponding path program 1 times [2023-12-19 13:52:03,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:52:03,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701471935] [2023-12-19 13:52:03,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:52:03,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:52:03,496 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:52:03,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956877457] [2023-12-19 13:52:03,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:52:03,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:52:03,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:52:03,498 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:52:03,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 13:52:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:52:03,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 13:52:03,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:52:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 1824 proven. 216 refuted. 0 times theorem prover too weak. 10284 trivial. 0 not checked. [2023-12-19 13:52:04,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:52:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 18 proven. 216 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-19 13:52:05,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:52:05,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701471935] [2023-12-19 13:52:05,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:52:05,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956877457] [2023-12-19 13:52:05,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956877457] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:52:05,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:52:05,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 13:52:05,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41172616] [2023-12-19 13:52:05,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:52:05,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 13:52:05,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:52:05,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 13:52:05,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-19 13:52:05,341 INFO L87 Difference]: Start difference. First operand 147081 states and 232771 transitions. Second operand has 12 states, 11 states have (on average 23.545454545454547) internal successors, (259), 12 states have internal predecessors, (259), 5 states have call successors, (152), 3 states have call predecessors, (152), 4 states have return successors, (152), 3 states have call predecessors, (152), 5 states have call successors, (152) [2023-12-19 13:52:22,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:52:22,955 INFO L93 Difference]: Finished difference Result 587854 states and 922225 transitions. [2023-12-19 13:52:22,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 13:52:22,984 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 23.545454545454547) internal successors, (259), 12 states have internal predecessors, (259), 5 states have call successors, (152), 3 states have call predecessors, (152), 4 states have return successors, (152), 3 states have call predecessors, (152), 5 states have call successors, (152) Word has length 535 [2023-12-19 13:52:22,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:52:24,295 INFO L225 Difference]: With dead ends: 587854 [2023-12-19 13:52:24,296 INFO L226 Difference]: Without dead ends: 441085 [2023-12-19 13:52:24,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1090 GetRequests, 1062 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2023-12-19 13:52:24,462 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 2240 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 13:52:24,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2246 Valid, 1782 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 13:52:24,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441085 states. [2023-12-19 13:52:34,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441085 to 174857. [2023-12-19 13:52:34,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174857 states, 158615 states have (on average 1.5609116413958326) internal successors, (247584), 158967 states have internal predecessors, (247584), 14279 states have call successors, (14279), 1962 states have call predecessors, (14279), 1962 states have return successors, (14279), 13927 states have call predecessors, (14279), 14279 states have call successors, (14279) [2023-12-19 13:52:35,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174857 states to 174857 states and 276142 transitions. [2023-12-19 13:52:35,096 INFO L78 Accepts]: Start accepts. Automaton has 174857 states and 276142 transitions. Word has length 535 [2023-12-19 13:52:35,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:52:35,096 INFO L495 AbstractCegarLoop]: Abstraction has 174857 states and 276142 transitions. [2023-12-19 13:52:35,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 23.545454545454547) internal successors, (259), 12 states have internal predecessors, (259), 5 states have call successors, (152), 3 states have call predecessors, (152), 4 states have return successors, (152), 3 states have call predecessors, (152), 5 states have call successors, (152) [2023-12-19 13:52:35,097 INFO L276 IsEmpty]: Start isEmpty. Operand 174857 states and 276142 transitions. [2023-12-19 13:52:35,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-12-19 13:52:35,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:52:35,123 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:52:35,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 13:52:35,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 13:52:35,331 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:52:35,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:52:35,332 INFO L85 PathProgramCache]: Analyzing trace with hash 936146502, now seen corresponding path program 1 times [2023-12-19 13:52:35,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:52:35,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208975145] [2023-12-19 13:52:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:52:35,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:52:35,383 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:52:35,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445584925] [2023-12-19 13:52:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:52:35,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:52:35,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:52:35,384 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:52:35,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 13:52:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:52:35,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 13:52:36,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:52:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 3756 proven. 378 refuted. 0 times theorem prover too weak. 8190 trivial. 0 not checked. [2023-12-19 13:52:37,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:52:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 84 proven. 381 refuted. 0 times theorem prover too weak. 11859 trivial. 0 not checked. [2023-12-19 13:52:40,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:52:40,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208975145] [2023-12-19 13:52:40,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:52:40,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445584925] [2023-12-19 13:52:40,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445584925] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:52:40,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:52:40,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-12-19 13:52:40,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302985623] [2023-12-19 13:52:40,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:52:40,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 13:52:40,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:52:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 13:52:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-12-19 13:52:40,321 INFO L87 Difference]: Start difference. First operand 174857 states and 276142 transitions. Second operand has 20 states, 19 states have (on average 14.31578947368421) internal successors, (272), 18 states have internal predecessors, (272), 6 states have call successors, (158), 4 states have call predecessors, (158), 7 states have return successors, (158), 6 states have call predecessors, (158), 6 states have call successors, (158) [2023-12-19 13:53:36,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:53:36,897 INFO L93 Difference]: Finished difference Result 748140 states and 1160857 transitions. [2023-12-19 13:53:36,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-19 13:53:36,898 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 14.31578947368421) internal successors, (272), 18 states have internal predecessors, (272), 6 states have call successors, (158), 4 states have call predecessors, (158), 7 states have return successors, (158), 6 states have call predecessors, (158), 6 states have call successors, (158) Word has length 535 [2023-12-19 13:53:36,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:53:38,719 INFO L225 Difference]: With dead ends: 748140 [2023-12-19 13:53:38,719 INFO L226 Difference]: Without dead ends: 573599 [2023-12-19 13:53:39,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1126 GetRequests, 1060 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1030, Invalid=3526, Unknown=0, NotChecked=0, Total=4556 [2023-12-19 13:53:39,126 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 4454 mSDsluCounter, 5673 mSDsCounter, 0 mSdLazyCounter, 4495 mSolverCounterSat, 1504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4470 SdHoareTripleChecker+Valid, 6464 SdHoareTripleChecker+Invalid, 5999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1504 IncrementalHoareTripleChecker+Valid, 4495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-19 13:53:39,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4470 Valid, 6464 Invalid, 5999 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1504 Valid, 4495 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-19 13:53:39,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573599 states. [2023-12-19 13:54:11,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573599 to 322299. [2023-12-19 13:54:12,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322299 states, 284223 states have (on average 1.524626789527941) internal successors, (433334), 285023 states have internal predecessors, (433334), 32799 states have call successors, (32799), 5276 states have call predecessors, (32799), 5276 states have return successors, (32799), 31999 states have call predecessors, (32799), 32799 states have call successors, (32799) [2023-12-19 13:54:13,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322299 states to 322299 states and 498932 transitions. [2023-12-19 13:54:13,273 INFO L78 Accepts]: Start accepts. Automaton has 322299 states and 498932 transitions. Word has length 535 [2023-12-19 13:54:13,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:54:13,274 INFO L495 AbstractCegarLoop]: Abstraction has 322299 states and 498932 transitions. [2023-12-19 13:54:13,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 14.31578947368421) internal successors, (272), 18 states have internal predecessors, (272), 6 states have call successors, (158), 4 states have call predecessors, (158), 7 states have return successors, (158), 6 states have call predecessors, (158), 6 states have call successors, (158) [2023-12-19 13:54:13,274 INFO L276 IsEmpty]: Start isEmpty. Operand 322299 states and 498932 transitions. [2023-12-19 13:54:13,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2023-12-19 13:54:13,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:54:13,297 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:54:13,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 13:54:13,505 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 [2023-12-19 13:54:13,506 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:54:13,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:54:13,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1264410657, now seen corresponding path program 1 times [2023-12-19 13:54:13,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:54:13,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413288766] [2023-12-19 13:54:13,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:54:13,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:54:13,558 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:54:13,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895739649] [2023-12-19 13:54:13,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:54:13,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:54:13,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:54:13,573 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) [2023-12-19 13:54:13,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 13:54:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:54:14,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-19 13:54:14,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:54:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6572 proven. 348 refuted. 0 times theorem prover too weak. 5404 trivial. 0 not checked. [2023-12-19 13:54:15,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:54:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 357 proven. 108 refuted. 0 times theorem prover too weak. 11859 trivial. 0 not checked. [2023-12-19 13:54:15,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:54:15,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413288766] [2023-12-19 13:54:15,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:54:15,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895739649] [2023-12-19 13:54:15,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895739649] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:54:15,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:54:15,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2023-12-19 13:54:15,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30173273] [2023-12-19 13:54:15,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:54:15,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 13:54:15,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:54:15,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 13:54:15,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2023-12-19 13:54:15,956 INFO L87 Difference]: Start difference. First operand 322299 states and 498932 transitions. Second operand has 21 states, 21 states have (on average 12.476190476190476) internal successors, (262), 20 states have internal predecessors, (262), 6 states have call successors, (111), 4 states have call predecessors, (111), 8 states have return successors, (113), 6 states have call predecessors, (113), 6 states have call successors, (113)