/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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 13:38:24,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 13:38:24,481 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 13:38:24,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 13:38:24,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 13:38:24,512 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 13:38:24,512 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 13:38:24,513 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 13:38:24,513 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 13:38:24,516 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 13:38:24,516 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 13:38:24,516 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 13:38:24,517 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 13:38:24,518 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 13:38:24,518 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 13:38:24,518 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 13:38:24,518 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 13:38:24,518 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 13:38:24,518 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 13:38:24,519 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 13:38:24,519 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 13:38:24,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 13:38:24,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 13:38:24,520 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 13:38:24,520 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 13:38:24,520 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 13:38:24,520 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 13:38:24,521 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 13:38:24,521 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 13:38:24,521 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 13:38:24,522 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 13:38:24,522 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 13:38:24,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:38:24,522 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 13:38:24,522 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 13:38:24,522 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 13:38:24,523 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 13:38:24,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 13:38:24,523 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 13:38:24,523 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 13:38:24,523 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 13:38:24,523 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 13:38:24,524 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 13:38:24,524 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 13:38:24,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 13:38:24,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 13:38:24,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 13:38:24,716 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 13:38:24,716 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 13:38:24,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-2.i [2023-12-19 13:38:25,836 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 13:38:26,045 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 13:38:26,045 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-2.i [2023-12-19 13:38:26,053 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0810c682/0269d81a9d1b49288869b38ef8cb9571/FLAG14c13b3c5 [2023-12-19 13:38:26,062 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0810c682/0269d81a9d1b49288869b38ef8cb9571 [2023-12-19 13:38:26,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 13:38:26,065 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 13:38:26,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 13:38:26,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 13:38:26,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 13:38:26,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:38:26" (1/1) ... [2023-12-19 13:38:26,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a746c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:26, skipping insertion in model container [2023-12-19 13:38:26,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:38:26" (1/1) ... [2023-12-19 13:38:26,105 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 13:38:26,195 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-2.i[915,928] [2023-12-19 13:38:26,337 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:38:26,347 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 13:38:26,355 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-2.i[915,928] [2023-12-19 13:38:26,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:38:26,509 INFO L206 MainTranslator]: Completed translation [2023-12-19 13:38:26,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:26 WrapperNode [2023-12-19 13:38:26,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 13:38:26,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 13:38:26,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 13:38:26,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 13:38:26,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:26" (1/1) ... [2023-12-19 13:38:26,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:26" (1/1) ... [2023-12-19 13:38:26,630 INFO L138 Inliner]: procedures = 26, calls = 86, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 703 [2023-12-19 13:38:26,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 13:38:26,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 13:38:26,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 13:38:26,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 13:38:26,639 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:26" (1/1) ... [2023-12-19 13:38:26,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:26" (1/1) ... [2023-12-19 13:38:26,656 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:26" (1/1) ... [2023-12-19 13:38:26,692 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 13:38:26,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:26" (1/1) ... [2023-12-19 13:38:26,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:26" (1/1) ... [2023-12-19 13:38:26,719 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:26" (1/1) ... [2023-12-19 13:38:26,731 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:26" (1/1) ... [2023-12-19 13:38:26,737 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:26" (1/1) ... [2023-12-19 13:38:26,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:26" (1/1) ... [2023-12-19 13:38:26,756 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 13:38:26,757 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 13:38:26,757 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 13:38:26,757 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 13:38:26,758 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:26" (1/1) ... [2023-12-19 13:38:26,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:38:26,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:26,777 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 13:38:26,820 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 13:38:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 13:38:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 13:38:26,828 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 13:38:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 13:38:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 13:38:26,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 13:38:26,924 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 13:38:26,925 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 13:38:27,675 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 13:38:27,751 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 13:38:27,751 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 13:38:27,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:38:27 BoogieIcfgContainer [2023-12-19 13:38:27,752 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 13:38:27,753 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 13:38:27,754 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 13:38:27,756 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 13:38:27,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:38:26" (1/3) ... [2023-12-19 13:38:27,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628418fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:38:27, skipping insertion in model container [2023-12-19 13:38:27,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:26" (2/3) ... [2023-12-19 13:38:27,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628418fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:38:27, skipping insertion in model container [2023-12-19 13:38:27,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:38:27" (3/3) ... [2023-12-19 13:38:27,759 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-2.i [2023-12-19 13:38:27,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 13:38:27,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 13:38:27,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 13:38:27,822 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;@31c459b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 13:38:27,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 13:38:27,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 266 states, 190 states have (on average 1.5789473684210527) internal successors, (300), 191 states have internal predecessors, (300), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-19 13:38:27,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:27,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:27,862 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:27,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:27,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:27,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1599122247, now seen corresponding path program 1 times [2023-12-19 13:38:27,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:27,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935313377] [2023-12-19 13:38:27,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:27,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:28,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:28,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935313377] [2023-12-19 13:38:28,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 13:38:28,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856944121] [2023-12-19 13:38:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:28,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:28,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:28,210 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 13:38:28,237 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 13:38:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:28,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 13:38:28,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2023-12-19 13:38:28,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:38:28,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856944121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:38:28,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:38:28,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 13:38:28,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060496341] [2023-12-19 13:38:28,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:38:28,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 13:38:28,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:28,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 13:38:28,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:38:28,642 INFO L87 Difference]: Start difference. First operand has 266 states, 190 states have (on average 1.5789473684210527) internal successors, (300), 191 states have internal predecessors, (300), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) [2023-12-19 13:38:28,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:28,689 INFO L93 Difference]: Finished difference Result 529 states and 963 transitions. [2023-12-19 13:38:28,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 13:38:28,691 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) Word has length 490 [2023-12-19 13:38:28,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:28,698 INFO L225 Difference]: With dead ends: 529 [2023-12-19 13:38:28,698 INFO L226 Difference]: Without dead ends: 264 [2023-12-19 13:38:28,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 489 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 13:38:28,707 INFO L413 NwaCegarLoop]: 438 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, 438 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 13:38:28,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 438 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:38:28,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-19 13:38:28,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-12-19 13:38:28,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 189 states have (on average 1.560846560846561) internal successors, (295), 189 states have internal predecessors, (295), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-19 13:38:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 441 transitions. [2023-12-19 13:38:28,764 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 441 transitions. Word has length 490 [2023-12-19 13:38:28,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:28,765 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 441 transitions. [2023-12-19 13:38:28,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) [2023-12-19 13:38:28,765 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 441 transitions. [2023-12-19 13:38:28,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:28,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:28,771 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:28,785 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 13:38:28,982 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 13:38:28,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:28,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:28,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1253496955, now seen corresponding path program 1 times [2023-12-19 13:38:28,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:28,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945991155] [2023-12-19 13:38:28,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:28,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:29,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:29,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069142481] [2023-12-19 13:38:29,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:29,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:29,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:29,119 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 13:38:29,164 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 13:38:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:29,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:38:29,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:38:29,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:38:29,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:29,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945991155] [2023-12-19 13:38:29,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:29,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069142481] [2023-12-19 13:38:29,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069142481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:38:29,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:38:29,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:38:29,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876204551] [2023-12-19 13:38:29,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:38:29,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:38:29,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:29,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:38:29,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:38:29,469 INFO L87 Difference]: Start difference. First operand 264 states and 441 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:29,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:29,592 INFO L93 Difference]: Finished difference Result 789 states and 1319 transitions. [2023-12-19 13:38:29,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:38:29,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 490 [2023-12-19 13:38:29,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:29,597 INFO L225 Difference]: With dead ends: 789 [2023-12-19 13:38:29,597 INFO L226 Difference]: Without dead ends: 526 [2023-12-19 13:38:29,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 488 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 13:38:29,599 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 436 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:29,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1098 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:38:29,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-19 13:38:29,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 265. [2023-12-19 13:38:29,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 190 states have (on average 1.5578947368421052) internal successors, (296), 190 states have internal predecessors, (296), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-19 13:38:29,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 442 transitions. [2023-12-19 13:38:29,624 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 442 transitions. Word has length 490 [2023-12-19 13:38:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:29,626 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 442 transitions. [2023-12-19 13:38:29,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:29,626 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 442 transitions. [2023-12-19 13:38:29,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:29,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:29,631 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:29,641 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 13:38:29,841 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 13:38:29,841 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:29,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:29,842 INFO L85 PathProgramCache]: Analyzing trace with hash -836100349, now seen corresponding path program 1 times [2023-12-19 13:38:29,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:29,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347925715] [2023-12-19 13:38:29,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:29,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:29,937 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:29,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463169067] [2023-12-19 13:38:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:29,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:29,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:29,953 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 13:38:29,960 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 13:38:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:30,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:38:30,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:38:30,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:38:30,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:30,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347925715] [2023-12-19 13:38:30,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:30,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463169067] [2023-12-19 13:38:30,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463169067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:38:30,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:38:30,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:38:30,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472005330] [2023-12-19 13:38:30,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:38:30,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:38:30,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:30,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:38:30,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:38:30,277 INFO L87 Difference]: Start difference. First operand 265 states and 442 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:30,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:30,378 INFO L93 Difference]: Finished difference Result 781 states and 1304 transitions. [2023-12-19 13:38:30,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:38:30,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 490 [2023-12-19 13:38:30,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:30,383 INFO L225 Difference]: With dead ends: 781 [2023-12-19 13:38:30,383 INFO L226 Difference]: Without dead ends: 517 [2023-12-19 13:38:30,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 488 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 13:38:30,384 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 417 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:30,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1087 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:38:30,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-12-19 13:38:30,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 324. [2023-12-19 13:38:30,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 249 states have (on average 1.6144578313253013) internal successors, (402), 249 states have internal predecessors, (402), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-19 13:38:30,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 548 transitions. [2023-12-19 13:38:30,413 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 548 transitions. Word has length 490 [2023-12-19 13:38:30,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:30,414 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 548 transitions. [2023-12-19 13:38:30,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:30,414 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 548 transitions. [2023-12-19 13:38:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:30,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:30,418 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:30,427 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 13:38:30,625 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 13:38:30,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:30,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:30,626 INFO L85 PathProgramCache]: Analyzing trace with hash 550685061, now seen corresponding path program 1 times [2023-12-19 13:38:30,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:30,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118377870] [2023-12-19 13:38:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:30,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:30,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:30,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325150947] [2023-12-19 13:38:30,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:30,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:30,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:30,674 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 13:38:30,677 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 13:38:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:30,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 1212 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:38:30,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:38:31,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:38:31,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:31,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118377870] [2023-12-19 13:38:31,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:31,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325150947] [2023-12-19 13:38:31,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325150947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:38:31,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:38:31,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:38:31,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037398865] [2023-12-19 13:38:31,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:38:31,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:38:31,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:31,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:38:31,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:38:31,006 INFO L87 Difference]: Start difference. First operand 324 states and 548 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:31,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:31,054 INFO L93 Difference]: Finished difference Result 948 states and 1602 transitions. [2023-12-19 13:38:31,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:38:31,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 490 [2023-12-19 13:38:31,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:31,057 INFO L225 Difference]: With dead ends: 948 [2023-12-19 13:38:31,057 INFO L226 Difference]: Without dead ends: 625 [2023-12-19 13:38:31,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 488 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 13:38:31,059 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 416 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:31,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 860 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:38:31,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2023-12-19 13:38:31,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 326. [2023-12-19 13:38:31,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 251 states have (on average 1.6095617529880477) internal successors, (404), 251 states have internal predecessors, (404), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-19 13:38:31,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 550 transitions. [2023-12-19 13:38:31,075 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 550 transitions. Word has length 490 [2023-12-19 13:38:31,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:31,076 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 550 transitions. [2023-12-19 13:38:31,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:31,076 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 550 transitions. [2023-12-19 13:38:31,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:31,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:31,079 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:31,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 13:38:31,285 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 13:38:31,286 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:31,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:31,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1377587641, now seen corresponding path program 1 times [2023-12-19 13:38:31,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:31,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545195111] [2023-12-19 13:38:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:31,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:31,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:31,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551655653] [2023-12-19 13:38:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:31,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:31,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:31,330 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 13:38:31,356 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 13:38:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:31,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 13:38:31,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:31,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:38:31,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:38:31,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:31,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545195111] [2023-12-19 13:38:31,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:31,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551655653] [2023-12-19 13:38:31,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551655653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:38:31,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:38:31,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:38:31,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102692215] [2023-12-19 13:38:31,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:38:31,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:38:31,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:31,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:38:31,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:38:31,656 INFO L87 Difference]: Start difference. First operand 326 states and 550 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:31,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:31,721 INFO L93 Difference]: Finished difference Result 950 states and 1602 transitions. [2023-12-19 13:38:31,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:38:31,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 490 [2023-12-19 13:38:31,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:31,724 INFO L225 Difference]: With dead ends: 950 [2023-12-19 13:38:31,724 INFO L226 Difference]: Without dead ends: 625 [2023-12-19 13:38:31,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 487 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 13:38:31,726 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 522 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:31,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1289 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:38:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2023-12-19 13:38:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 332. [2023-12-19 13:38:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 257 states have (on average 1.6031128404669261) internal successors, (412), 257 states have internal predecessors, (412), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-19 13:38:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 558 transitions. [2023-12-19 13:38:31,747 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 558 transitions. Word has length 490 [2023-12-19 13:38:31,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:31,750 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 558 transitions. [2023-12-19 13:38:31,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 558 transitions. [2023-12-19 13:38:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:31,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:31,753 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:31,766 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 13:38:31,960 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 13:38:31,960 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:31,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:31,961 INFO L85 PathProgramCache]: Analyzing trace with hash -108773729, now seen corresponding path program 1 times [2023-12-19 13:38:31,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:31,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575551920] [2023-12-19 13:38:31,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:31,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:32,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:32,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382832293] [2023-12-19 13:38:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:32,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:32,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:32,043 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 13:38:32,067 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 13:38:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:32,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 13:38:32,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:38:32,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:38:32,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:32,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575551920] [2023-12-19 13:38:32,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:32,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382832293] [2023-12-19 13:38:32,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382832293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:38:32,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:38:32,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 13:38:32,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182880043] [2023-12-19 13:38:32,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:38:32,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:38:32,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:32,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:38:32,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:38:32,439 INFO L87 Difference]: Start difference. First operand 332 states and 558 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:32,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:32,923 INFO L93 Difference]: Finished difference Result 1315 states and 2210 transitions. [2023-12-19 13:38:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 13:38:32,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 490 [2023-12-19 13:38:32,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:32,927 INFO L225 Difference]: With dead ends: 1315 [2023-12-19 13:38:32,927 INFO L226 Difference]: Without dead ends: 984 [2023-12-19 13:38:32,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 486 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 13:38:32,928 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 904 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:32,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 2188 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 13:38:32,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2023-12-19 13:38:32,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 963. [2023-12-19 13:38:32,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 740 states have (on average 1.5837837837837838) internal successors, (1172), 740 states have internal predecessors, (1172), 219 states have call successors, (219), 3 states have call predecessors, (219), 3 states have return successors, (219), 219 states have call predecessors, (219), 219 states have call successors, (219) [2023-12-19 13:38:32,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1610 transitions. [2023-12-19 13:38:32,968 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1610 transitions. Word has length 490 [2023-12-19 13:38:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:32,968 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1610 transitions. [2023-12-19 13:38:32,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:32,969 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1610 transitions. [2023-12-19 13:38:32,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:32,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:32,971 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:32,978 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 13:38:33,178 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 13:38:33,179 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:33,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:33,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1903879201, now seen corresponding path program 1 times [2023-12-19 13:38:33,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:33,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695235421] [2023-12-19 13:38:33,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:33,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:33,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:33,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549846652] [2023-12-19 13:38:33,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:33,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:33,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:33,232 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 13:38:33,233 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 13:38:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:33,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 13:38:33,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:33,651 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:38:33,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:38:33,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:33,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695235421] [2023-12-19 13:38:33,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:33,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549846652] [2023-12-19 13:38:33,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549846652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:38:33,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:38:33,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 13:38:33,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569919241] [2023-12-19 13:38:33,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:38:33,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 13:38:33,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:33,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 13:38:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:38:33,653 INFO L87 Difference]: Start difference. First operand 963 states and 1610 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:34,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:34,290 INFO L93 Difference]: Finished difference Result 4722 states and 7819 transitions. [2023-12-19 13:38:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 13:38:34,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 490 [2023-12-19 13:38:34,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:34,302 INFO L225 Difference]: With dead ends: 4722 [2023-12-19 13:38:34,302 INFO L226 Difference]: Without dead ends: 3760 [2023-12-19 13:38:34,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:38:34,305 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 2055 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:34,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2055 Valid, 2182 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 13:38:34,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3760 states. [2023-12-19 13:38:34,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3760 to 2304. [2023-12-19 13:38:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 2018 states have (on average 1.638751238850347) internal successors, (3307), 2021 states have internal predecessors, (3307), 279 states have call successors, (279), 6 states have call predecessors, (279), 6 states have return successors, (279), 276 states have call predecessors, (279), 279 states have call successors, (279) [2023-12-19 13:38:34,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3865 transitions. [2023-12-19 13:38:34,479 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3865 transitions. Word has length 490 [2023-12-19 13:38:34,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:34,479 INFO L495 AbstractCegarLoop]: Abstraction has 2304 states and 3865 transitions. [2023-12-19 13:38:34,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:34,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3865 transitions. [2023-12-19 13:38:34,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:34,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:34,483 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:34,502 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 13:38:34,691 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 13:38:34,691 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:34,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:34,692 INFO L85 PathProgramCache]: Analyzing trace with hash -892761951, now seen corresponding path program 1 times [2023-12-19 13:38:34,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:34,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251139021] [2023-12-19 13:38:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:34,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:34,738 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:34,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370681459] [2023-12-19 13:38:34,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:34,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:34,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:34,739 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 13:38:34,768 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 13:38:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:35,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 13:38:35,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:38:35,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:38:35,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:35,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251139021] [2023-12-19 13:38:35,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:35,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370681459] [2023-12-19 13:38:35,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370681459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:38:35,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:38:35,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 13:38:35,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990479513] [2023-12-19 13:38:35,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:38:35,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:38:35,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:35,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:38:35,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:38:35,552 INFO L87 Difference]: Start difference. First operand 2304 states and 3865 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:36,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:36,242 INFO L93 Difference]: Finished difference Result 13269 states and 22295 transitions. [2023-12-19 13:38:36,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 13:38:36,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 490 [2023-12-19 13:38:36,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:36,291 INFO L225 Difference]: With dead ends: 13269 [2023-12-19 13:38:36,292 INFO L226 Difference]: Without dead ends: 10966 [2023-12-19 13:38:36,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-12-19 13:38:36,301 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 2759 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2759 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:36,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2759 Valid, 2634 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 13:38:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10966 states. [2023-12-19 13:38:36,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10966 to 5967. [2023-12-19 13:38:36,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5967 states, 5276 states have (on average 1.6226307808946172) internal successors, (8561), 5291 states have internal predecessors, (8561), 666 states have call successors, (666), 24 states have call predecessors, (666), 24 states have return successors, (666), 651 states have call predecessors, (666), 666 states have call successors, (666) [2023-12-19 13:38:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5967 states to 5967 states and 9893 transitions. [2023-12-19 13:38:36,664 INFO L78 Accepts]: Start accepts. Automaton has 5967 states and 9893 transitions. Word has length 490 [2023-12-19 13:38:36,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:36,664 INFO L495 AbstractCegarLoop]: Abstraction has 5967 states and 9893 transitions. [2023-12-19 13:38:36,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:36,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5967 states and 9893 transitions. [2023-12-19 13:38:36,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:36,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:36,674 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:36,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 13:38:36,882 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 13:38:36,883 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:36,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:36,884 INFO L85 PathProgramCache]: Analyzing trace with hash 952605215, now seen corresponding path program 1 times [2023-12-19 13:38:36,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:36,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537109047] [2023-12-19 13:38:36,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:36,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:36,943 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:36,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140517718] [2023-12-19 13:38:36,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:36,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:36,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:36,971 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 13:38:36,974 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 13:38:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:37,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 13:38:37,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:38:37,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:38:37,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:37,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537109047] [2023-12-19 13:38:37,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:37,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140517718] [2023-12-19 13:38:37,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140517718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:38:37,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:38:37,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:38:37,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164826163] [2023-12-19 13:38:37,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:38:37,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:38:37,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:37,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:38:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:38:37,373 INFO L87 Difference]: Start difference. First operand 5967 states and 9893 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:37,741 INFO L93 Difference]: Finished difference Result 17383 states and 28818 transitions. [2023-12-19 13:38:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:38:37,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 490 [2023-12-19 13:38:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:37,780 INFO L225 Difference]: With dead ends: 17383 [2023-12-19 13:38:37,781 INFO L226 Difference]: Without dead ends: 11417 [2023-12-19 13:38:37,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 487 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 13:38:37,793 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 342 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:37,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1175 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:38:37,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11417 states. [2023-12-19 13:38:38,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11417 to 11409. [2023-12-19 13:38:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11409 states, 10232 states have (on average 1.623240813135262) internal successors, (16609), 10265 states have internal predecessors, (16609), 1128 states have call successors, (1128), 48 states have call predecessors, (1128), 48 states have return successors, (1128), 1095 states have call predecessors, (1128), 1128 states have call successors, (1128) [2023-12-19 13:38:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11409 states to 11409 states and 18865 transitions. [2023-12-19 13:38:38,155 INFO L78 Accepts]: Start accepts. Automaton has 11409 states and 18865 transitions. Word has length 490 [2023-12-19 13:38:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:38,156 INFO L495 AbstractCegarLoop]: Abstraction has 11409 states and 18865 transitions. [2023-12-19 13:38:38,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:38,156 INFO L276 IsEmpty]: Start isEmpty. Operand 11409 states and 18865 transitions. [2023-12-19 13:38:38,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:38,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:38,169 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:38,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 13:38:38,378 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 13:38:38,379 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:38,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:38,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1654205089, now seen corresponding path program 1 times [2023-12-19 13:38:38,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:38,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667467521] [2023-12-19 13:38:38,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:38,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:38,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:38,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671836412] [2023-12-19 13:38:38,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:38,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:38,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:38,417 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 13:38:38,444 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 13:38:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:38,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:38:38,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 4138 proven. 159 refuted. 0 times theorem prover too weak. 6215 trivial. 0 not checked. [2023-12-19 13:38:39,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:38:39,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 57 proven. 159 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2023-12-19 13:38:39,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:39,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667467521] [2023-12-19 13:38:39,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:39,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671836412] [2023-12-19 13:38:39,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671836412] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:38:39,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:38:39,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 13:38:39,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823169106] [2023-12-19 13:38:39,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:38:39,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:38:39,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:39,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:38:39,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:38:39,396 INFO L87 Difference]: Start difference. First operand 11409 states and 18865 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 2 states have call successors, (126), 2 states have call predecessors, (126), 4 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) [2023-12-19 13:38:39,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:39,764 INFO L93 Difference]: Finished difference Result 15701 states and 25963 transitions. [2023-12-19 13:38:39,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 13:38:39,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 2 states have call successors, (126), 2 states have call predecessors, (126), 4 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) Word has length 490 [2023-12-19 13:38:39,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:39,773 INFO L225 Difference]: With dead ends: 15701 [2023-12-19 13:38:39,773 INFO L226 Difference]: Without dead ends: 4293 [2023-12-19 13:38:39,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 972 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:38:39,787 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 500 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:39,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 894 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:38:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4293 states. [2023-12-19 13:38:39,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4293 to 4215. [2023-12-19 13:38:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4215 states, 3752 states have (on average 1.6154051172707888) internal successors, (6061), 3761 states have internal predecessors, (6061), 444 states have call successors, (444), 18 states have call predecessors, (444), 18 states have return successors, (444), 435 states have call predecessors, (444), 444 states have call successors, (444) [2023-12-19 13:38:39,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 6949 transitions. [2023-12-19 13:38:39,967 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 6949 transitions. Word has length 490 [2023-12-19 13:38:39,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:39,967 INFO L495 AbstractCegarLoop]: Abstraction has 4215 states and 6949 transitions. [2023-12-19 13:38:39,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 2 states have call successors, (126), 2 states have call predecessors, (126), 4 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) [2023-12-19 13:38:39,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 6949 transitions. [2023-12-19 13:38:39,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:39,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:39,973 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:39,982 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 13:38:40,180 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 13:38:40,180 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:40,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:40,181 INFO L85 PathProgramCache]: Analyzing trace with hash 488110177, now seen corresponding path program 1 times [2023-12-19 13:38:40,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:40,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342529836] [2023-12-19 13:38:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:40,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:40,220 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:40,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600302220] [2023-12-19 13:38:40,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:40,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:40,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:40,221 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 13:38:40,223 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 13:38:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:40,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 13:38:40,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:38:40,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:38:40,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:40,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342529836] [2023-12-19 13:38:40,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:40,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600302220] [2023-12-19 13:38:40,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600302220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:38:40,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:38:40,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:38:40,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584553501] [2023-12-19 13:38:40,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:38:40,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:38:40,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:40,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:38:40,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:38:40,569 INFO L87 Difference]: Start difference. First operand 4215 states and 6949 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:40,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:40,832 INFO L93 Difference]: Finished difference Result 9643 states and 15764 transitions. [2023-12-19 13:38:40,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:38:40,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 490 [2023-12-19 13:38:40,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:40,841 INFO L225 Difference]: With dead ends: 9643 [2023-12-19 13:38:40,841 INFO L226 Difference]: Without dead ends: 5417 [2023-12-19 13:38:40,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 488 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 13:38:40,845 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 334 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:40,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1089 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:38:40,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5417 states. [2023-12-19 13:38:40,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5417 to 3039. [2023-12-19 13:38:40,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3039 states, 2684 states have (on average 1.6195976154992549) internal successors, (4347), 2687 states have internal predecessors, (4347), 336 states have call successors, (336), 18 states have call predecessors, (336), 18 states have return successors, (336), 333 states have call predecessors, (336), 336 states have call successors, (336) [2023-12-19 13:38:40,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 5019 transitions. [2023-12-19 13:38:40,943 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 5019 transitions. Word has length 490 [2023-12-19 13:38:40,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:40,943 INFO L495 AbstractCegarLoop]: Abstraction has 3039 states and 5019 transitions. [2023-12-19 13:38:40,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:40,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 5019 transitions. [2023-12-19 13:38:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:40,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:40,948 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:40,957 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 13:38:41,157 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 13:38:41,157 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:41,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:41,158 INFO L85 PathProgramCache]: Analyzing trace with hash 16320673, now seen corresponding path program 1 times [2023-12-19 13:38:41,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:41,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430906185] [2023-12-19 13:38:41,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:41,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:41,194 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:41,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711028148] [2023-12-19 13:38:41,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:41,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:41,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:41,195 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 13:38:41,219 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 13:38:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:41,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 13:38:41,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:38:42,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:38:42,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:42,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430906185] [2023-12-19 13:38:42,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:42,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711028148] [2023-12-19 13:38:42,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711028148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:38:42,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:38:42,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 13:38:42,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125996692] [2023-12-19 13:38:42,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:38:42,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 13:38:42,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:42,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 13:38:42,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 13:38:42,003 INFO L87 Difference]: Start difference. First operand 3039 states and 5019 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:42,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:42,962 INFO L93 Difference]: Finished difference Result 17362 states and 28594 transitions. [2023-12-19 13:38:42,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 13:38:42,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 490 [2023-12-19 13:38:42,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:42,985 INFO L225 Difference]: With dead ends: 17362 [2023-12-19 13:38:42,986 INFO L226 Difference]: Without dead ends: 14244 [2023-12-19 13:38:42,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2023-12-19 13:38:42,994 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 3467 mSDsluCounter, 3182 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3467 SdHoareTripleChecker+Valid, 3776 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:42,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3467 Valid, 3776 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 13:38:43,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14244 states. [2023-12-19 13:38:43,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14244 to 6332. [2023-12-19 13:38:43,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6332 states, 5630 states have (on average 1.6037300177619893) internal successors, (9029), 5642 states have internal predecessors, (9029), 653 states have call successors, (653), 48 states have call predecessors, (653), 48 states have return successors, (653), 641 states have call predecessors, (653), 653 states have call successors, (653) [2023-12-19 13:38:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6332 states to 6332 states and 10335 transitions. [2023-12-19 13:38:43,253 INFO L78 Accepts]: Start accepts. Automaton has 6332 states and 10335 transitions. Word has length 490 [2023-12-19 13:38:43,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:43,254 INFO L495 AbstractCegarLoop]: Abstraction has 6332 states and 10335 transitions. [2023-12-19 13:38:43,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:43,254 INFO L276 IsEmpty]: Start isEmpty. Operand 6332 states and 10335 transitions. [2023-12-19 13:38:43,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:43,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:43,262 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:43,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-19 13:38:43,470 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 13:38:43,470 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:43,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:43,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1861687839, now seen corresponding path program 1 times [2023-12-19 13:38:43,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:43,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504825836] [2023-12-19 13:38:43,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:43,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:43,521 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:43,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38376570] [2023-12-19 13:38:43,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:43,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:43,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:43,522 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 13:38:43,525 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 13:38:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:43,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 13:38:43,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:38:44,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:38:44,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:44,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504825836] [2023-12-19 13:38:44,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:44,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38376570] [2023-12-19 13:38:44,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38376570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:38:44,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:38:44,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:38:44,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637052131] [2023-12-19 13:38:44,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:38:44,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:38:44,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:44,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:38:44,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:38:44,290 INFO L87 Difference]: Start difference. First operand 6332 states and 10335 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:44,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:44,708 INFO L93 Difference]: Finished difference Result 15386 states and 25199 transitions. [2023-12-19 13:38:44,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:38:44,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 490 [2023-12-19 13:38:44,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:44,721 INFO L225 Difference]: With dead ends: 15386 [2023-12-19 13:38:44,722 INFO L226 Difference]: Without dead ends: 9186 [2023-12-19 13:38:44,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 487 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 13:38:44,729 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 318 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:44,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 1267 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:38:44,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9186 states. [2023-12-19 13:38:44,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9186 to 6336. [2023-12-19 13:38:44,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6336 states, 5634 states have (on average 1.603656372026979) internal successors, (9035), 5645 states have internal predecessors, (9035), 653 states have call successors, (653), 48 states have call predecessors, (653), 48 states have return successors, (653), 642 states have call predecessors, (653), 653 states have call successors, (653) [2023-12-19 13:38:44,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 10341 transitions. [2023-12-19 13:38:44,920 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 10341 transitions. Word has length 490 [2023-12-19 13:38:44,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:44,921 INFO L495 AbstractCegarLoop]: Abstraction has 6336 states and 10341 transitions. [2023-12-19 13:38:44,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:44,921 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 10341 transitions. [2023-12-19 13:38:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:44,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:44,927 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:44,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 13:38:45,149 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 13:38:45,150 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:45,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:45,150 INFO L85 PathProgramCache]: Analyzing trace with hash 946758677, now seen corresponding path program 1 times [2023-12-19 13:38:45,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:45,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418677318] [2023-12-19 13:38:45,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:45,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:45,204 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:45,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906011930] [2023-12-19 13:38:45,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:45,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:45,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:45,212 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 13:38:45,214 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 13:38:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:45,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 13:38:45,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:38:46,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:38:46,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:46,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418677318] [2023-12-19 13:38:46,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:46,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906011930] [2023-12-19 13:38:46,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906011930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:38:46,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:38:46,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 13:38:46,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450618033] [2023-12-19 13:38:46,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:38:46,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 13:38:46,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:46,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 13:38:46,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:38:46,049 INFO L87 Difference]: Start difference. First operand 6336 states and 10341 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:47,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:47,214 INFO L93 Difference]: Finished difference Result 19606 states and 32038 transitions. [2023-12-19 13:38:47,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 13:38:47,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 490 [2023-12-19 13:38:47,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:47,237 INFO L225 Difference]: With dead ends: 19606 [2023-12-19 13:38:47,237 INFO L226 Difference]: Without dead ends: 13406 [2023-12-19 13:38:47,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:38:47,248 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 1652 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 4367 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:47,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 4367 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 13:38:47,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13406 states. [2023-12-19 13:38:47,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13406 to 9840. [2023-12-19 13:38:47,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9840 states, 8682 states have (on average 1.587767795438839) internal successors, (13785), 8701 states have internal predecessors, (13785), 1077 states have call successors, (1077), 80 states have call predecessors, (1077), 80 states have return successors, (1077), 1058 states have call predecessors, (1077), 1077 states have call successors, (1077) [2023-12-19 13:38:47,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9840 states to 9840 states and 15939 transitions. [2023-12-19 13:38:47,663 INFO L78 Accepts]: Start accepts. Automaton has 9840 states and 15939 transitions. Word has length 490 [2023-12-19 13:38:47,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:47,664 INFO L495 AbstractCegarLoop]: Abstraction has 9840 states and 15939 transitions. [2023-12-19 13:38:47,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:47,664 INFO L276 IsEmpty]: Start isEmpty. Operand 9840 states and 15939 transitions. [2023-12-19 13:38:47,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:47,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:47,670 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:47,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 13:38:47,878 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 13:38:47,878 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:47,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:47,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1008798291, now seen corresponding path program 1 times [2023-12-19 13:38:47,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:47,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363400078] [2023-12-19 13:38:47,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:47,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:47,918 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:47,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539582798] [2023-12-19 13:38:47,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:47,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:47,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:47,919 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 13:38:47,946 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 13:38:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:48,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 1212 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 13:38:48,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 4516 proven. 150 refuted. 0 times theorem prover too weak. 5846 trivial. 0 not checked. [2023-12-19 13:38:48,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:38:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 66 proven. 150 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2023-12-19 13:38:48,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:48,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363400078] [2023-12-19 13:38:48,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:48,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539582798] [2023-12-19 13:38:48,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539582798] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:38:48,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:38:48,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-19 13:38:48,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963338474] [2023-12-19 13:38:48,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:38:48,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 13:38:48,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:48,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 13:38:48,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 13:38:48,915 INFO L87 Difference]: Start difference. First operand 9840 states and 15939 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 2 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) [2023-12-19 13:38:49,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:49,780 INFO L93 Difference]: Finished difference Result 16624 states and 26955 transitions. [2023-12-19 13:38:49,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 13:38:49,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 2 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) Word has length 490 [2023-12-19 13:38:49,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:49,791 INFO L225 Difference]: With dead ends: 16624 [2023-12-19 13:38:49,791 INFO L226 Difference]: Without dead ends: 6920 [2023-12-19 13:38:49,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 971 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-19 13:38:49,804 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 1335 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:49,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 1638 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 13:38:49,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6920 states. [2023-12-19 13:38:50,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6920 to 6848. [2023-12-19 13:38:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6848 states, 6019 states have (on average 1.5846486127263666) internal successors, (9538), 6030 states have internal predecessors, (9538), 765 states have call successors, (765), 63 states have call predecessors, (765), 63 states have return successors, (765), 754 states have call predecessors, (765), 765 states have call successors, (765) [2023-12-19 13:38:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6848 states to 6848 states and 11068 transitions. [2023-12-19 13:38:50,061 INFO L78 Accepts]: Start accepts. Automaton has 6848 states and 11068 transitions. Word has length 490 [2023-12-19 13:38:50,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:50,061 INFO L495 AbstractCegarLoop]: Abstraction has 6848 states and 11068 transitions. [2023-12-19 13:38:50,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 2 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) [2023-12-19 13:38:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 6848 states and 11068 transitions. [2023-12-19 13:38:50,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-19 13:38:50,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:50,065 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:50,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 13:38:50,273 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 13:38:50,273 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:50,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:50,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1568536301, now seen corresponding path program 1 times [2023-12-19 13:38:50,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:50,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826953917] [2023-12-19 13:38:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:50,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:50,313 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:50,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518126603] [2023-12-19 13:38:50,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:50,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:50,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:50,314 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 13:38:50,343 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 13:38:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:50,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 13:38:50,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 6841 proven. 87 refuted. 0 times theorem prover too weak. 3584 trivial. 0 not checked. [2023-12-19 13:38:51,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:38:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 129 proven. 87 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2023-12-19 13:38:51,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:51,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826953917] [2023-12-19 13:38:51,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:51,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518126603] [2023-12-19 13:38:51,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518126603] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:38:51,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:38:51,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 13:38:51,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337039625] [2023-12-19 13:38:51,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:38:51,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 13:38:51,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:51,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 13:38:51,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 13:38:51,586 INFO L87 Difference]: Start difference. First operand 6848 states and 11068 transitions. Second operand has 10 states, 10 states have (on average 18.7) internal successors, (187), 10 states have internal predecessors, (187), 5 states have call successors, (131), 3 states have call predecessors, (131), 5 states have return successors, (131), 5 states have call predecessors, (131), 5 states have call successors, (131) [2023-12-19 13:38:52,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:52,047 INFO L93 Difference]: Finished difference Result 8530 states and 13756 transitions. [2023-12-19 13:38:52,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 13:38:52,048 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.7) internal successors, (187), 10 states have internal predecessors, (187), 5 states have call successors, (131), 3 states have call predecessors, (131), 5 states have return successors, (131), 5 states have call predecessors, (131), 5 states have call successors, (131) Word has length 490 [2023-12-19 13:38:52,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:52,051 INFO L225 Difference]: With dead ends: 8530 [2023-12-19 13:38:52,051 INFO L226 Difference]: Without dead ends: 1822 [2023-12-19 13:38:52,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 970 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-19 13:38:52,057 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 770 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:52,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 842 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 13:38:52,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2023-12-19 13:38:52,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1424. [2023-12-19 13:38:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1221 states have (on average 1.5937755937755937) internal successors, (1946), 1222 states have internal predecessors, (1946), 185 states have call successors, (185), 17 states have call predecessors, (185), 17 states have return successors, (185), 184 states have call predecessors, (185), 185 states have call successors, (185) [2023-12-19 13:38:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2316 transitions. [2023-12-19 13:38:52,167 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2316 transitions. Word has length 490 [2023-12-19 13:38:52,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:52,167 INFO L495 AbstractCegarLoop]: Abstraction has 1424 states and 2316 transitions. [2023-12-19 13:38:52,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.7) internal successors, (187), 10 states have internal predecessors, (187), 5 states have call successors, (131), 3 states have call predecessors, (131), 5 states have return successors, (131), 5 states have call predecessors, (131), 5 states have call successors, (131) [2023-12-19 13:38:52,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2316 transitions. [2023-12-19 13:38:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-19 13:38:52,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:52,170 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:52,196 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 13:38:52,380 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 13:38:52,381 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:52,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:52,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1246280771, now seen corresponding path program 1 times [2023-12-19 13:38:52,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:52,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419800946] [2023-12-19 13:38:52,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:52,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:52,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:52,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084183098] [2023-12-19 13:38:52,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:52,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:52,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:52,417 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 13:38:52,444 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 13:38:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:52,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 13:38:52,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:38:53,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:38:53,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:53,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419800946] [2023-12-19 13:38:53,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:53,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084183098] [2023-12-19 13:38:53,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084183098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:38:53,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:38:53,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 13:38:53,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956752552] [2023-12-19 13:38:53,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:38:53,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:38:53,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:38:53,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:38:53,309 INFO L87 Difference]: Start difference. First operand 1424 states and 2316 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:53,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:53,957 INFO L93 Difference]: Finished difference Result 7251 states and 11837 transitions. [2023-12-19 13:38:53,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 13:38:53,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 491 [2023-12-19 13:38:53,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:53,966 INFO L225 Difference]: With dead ends: 7251 [2023-12-19 13:38:53,966 INFO L226 Difference]: Without dead ends: 5971 [2023-12-19 13:38:53,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-19 13:38:53,969 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 2162 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 3905 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:53,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 3905 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 13:38:53,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2023-12-19 13:38:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 2682. [2023-12-19 13:38:54,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2356 states have (on average 1.5921052631578947) internal successors, (3751), 2358 states have internal predecessors, (3751), 297 states have call successors, (297), 28 states have call predecessors, (297), 28 states have return successors, (297), 295 states have call predecessors, (297), 297 states have call successors, (297) [2023-12-19 13:38:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 4345 transitions. [2023-12-19 13:38:54,138 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 4345 transitions. Word has length 491 [2023-12-19 13:38:54,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:54,138 INFO L495 AbstractCegarLoop]: Abstraction has 2682 states and 4345 transitions. [2023-12-19 13:38:54,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:54,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 4345 transitions. [2023-12-19 13:38:54,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-19 13:38:54,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:54,142 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:54,154 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 13:38:54,350 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 13:38:54,350 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:54,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:54,351 INFO L85 PathProgramCache]: Analyzing trace with hash -596798571, now seen corresponding path program 1 times [2023-12-19 13:38:54,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:54,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929570008] [2023-12-19 13:38:54,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:54,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:54,395 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:54,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978679635] [2023-12-19 13:38:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:54,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:54,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:54,398 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 13:38:54,440 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 13:38:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:54,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 13:38:54,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:38:54,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:38:54,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:54,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929570008] [2023-12-19 13:38:54,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:54,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978679635] [2023-12-19 13:38:54,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978679635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:38:54,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:38:54,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:38:54,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005296282] [2023-12-19 13:38:54,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:38:54,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:38:54,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:54,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:38:54,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:38:54,895 INFO L87 Difference]: Start difference. First operand 2682 states and 4345 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:55,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:55,129 INFO L93 Difference]: Finished difference Result 6494 states and 10463 transitions. [2023-12-19 13:38:55,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:38:55,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 491 [2023-12-19 13:38:55,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:55,135 INFO L225 Difference]: With dead ends: 6494 [2023-12-19 13:38:55,136 INFO L226 Difference]: Without dead ends: 3956 [2023-12-19 13:38:55,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 488 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 13:38:55,140 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 453 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:55,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1722 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:38:55,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2023-12-19 13:38:55,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 2808. [2023-12-19 13:38:55,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2808 states, 2482 states have (on average 1.5890410958904109) internal successors, (3944), 2484 states have internal predecessors, (3944), 297 states have call successors, (297), 28 states have call predecessors, (297), 28 states have return successors, (297), 295 states have call predecessors, (297), 297 states have call successors, (297) [2023-12-19 13:38:55,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 4538 transitions. [2023-12-19 13:38:55,258 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 4538 transitions. Word has length 491 [2023-12-19 13:38:55,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:55,258 INFO L495 AbstractCegarLoop]: Abstraction has 2808 states and 4538 transitions. [2023-12-19 13:38:55,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:38:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 4538 transitions. [2023-12-19 13:38:55,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-19 13:38:55,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:55,262 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:55,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 13:38:55,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 13:38:55,469 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:38:55,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:38:55,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1741929327, now seen corresponding path program 1 times [2023-12-19 13:38:55,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:38:55,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984329662] [2023-12-19 13:38:55,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:55,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:38:55,507 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:38:55,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347833400] [2023-12-19 13:38:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:38:55,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:38:55,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:38:55,520 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:38:55,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 13:38:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:38:55,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 13:38:55,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:38:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 1951 proven. 195 refuted. 0 times theorem prover too weak. 8366 trivial. 0 not checked. [2023-12-19 13:38:57,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:38:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 21 proven. 195 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2023-12-19 13:38:58,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:38:58,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984329662] [2023-12-19 13:38:58,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:38:58,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347833400] [2023-12-19 13:38:58,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347833400] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:38:58,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:38:58,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-19 13:38:58,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483484864] [2023-12-19 13:38:58,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:38:58,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 13:38:58,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:38:58,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 13:38:58,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-12-19 13:38:58,171 INFO L87 Difference]: Start difference. First operand 2808 states and 4538 transitions. Second operand has 14 states, 14 states have (on average 16.428571428571427) internal successors, (230), 14 states have internal predecessors, (230), 6 states have call successors, (146), 4 states have call predecessors, (146), 6 states have return successors, (146), 6 states have call predecessors, (146), 6 states have call successors, (146) [2023-12-19 13:38:59,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:38:59,508 INFO L93 Difference]: Finished difference Result 11588 states and 18854 transitions. [2023-12-19 13:38:59,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 13:38:59,509 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.428571428571427) internal successors, (230), 14 states have internal predecessors, (230), 6 states have call successors, (146), 4 states have call predecessors, (146), 6 states have return successors, (146), 6 states have call predecessors, (146), 6 states have call successors, (146) Word has length 491 [2023-12-19 13:38:59,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:38:59,518 INFO L225 Difference]: With dead ends: 11588 [2023-12-19 13:38:59,518 INFO L226 Difference]: Without dead ends: 8924 [2023-12-19 13:38:59,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 991 GetRequests, 969 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2023-12-19 13:38:59,541 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1996 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2009 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:38:59,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2009 Valid, 1886 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 13:38:59,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8924 states. [2023-12-19 13:38:59,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8924 to 7444. [2023-12-19 13:38:59,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7444 states, 6843 states have (on average 1.6026596521993277) internal successors, (10967), 6851 states have internal predecessors, (10967), 541 states have call successors, (541), 59 states have call predecessors, (541), 59 states have return successors, (541), 533 states have call predecessors, (541), 541 states have call successors, (541) [2023-12-19 13:38:59,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7444 states to 7444 states and 12049 transitions. [2023-12-19 13:38:59,791 INFO L78 Accepts]: Start accepts. Automaton has 7444 states and 12049 transitions. Word has length 491 [2023-12-19 13:38:59,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:38:59,793 INFO L495 AbstractCegarLoop]: Abstraction has 7444 states and 12049 transitions. [2023-12-19 13:38:59,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.428571428571427) internal successors, (230), 14 states have internal predecessors, (230), 6 states have call successors, (146), 4 states have call predecessors, (146), 6 states have return successors, (146), 6 states have call predecessors, (146), 6 states have call successors, (146) [2023-12-19 13:38:59,793 INFO L276 IsEmpty]: Start isEmpty. Operand 7444 states and 12049 transitions. [2023-12-19 13:38:59,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-19 13:38:59,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:38:59,799 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:59,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-19 13:39:00,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:39:00,010 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:39:00,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:39:00,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1318282605, now seen corresponding path program 1 times [2023-12-19 13:39:00,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:39:00,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785850394] [2023-12-19 13:39:00,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:39:00,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:39:00,083 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:39:00,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878575831] [2023-12-19 13:39:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:39:00,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:39:00,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:39:00,085 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:39:00,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 13:39:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:39:00,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 13:39:00,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:39:00,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:39:00,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:39:00,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:39:00,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785850394] [2023-12-19 13:39:00,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:39:00,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878575831] [2023-12-19 13:39:00,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878575831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:39:00,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:39:00,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 13:39:00,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750104646] [2023-12-19 13:39:00,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:39:00,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 13:39:00,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:39:00,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 13:39:00,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 13:39:00,910 INFO L87 Difference]: Start difference. First operand 7444 states and 12049 transitions. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:39:01,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:39:01,740 INFO L93 Difference]: Finished difference Result 16623 states and 26942 transitions. [2023-12-19 13:39:01,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 13:39:01,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 491 [2023-12-19 13:39:01,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:39:01,767 INFO L225 Difference]: With dead ends: 16623 [2023-12-19 13:39:01,767 INFO L226 Difference]: Without dead ends: 9327 [2023-12-19 13:39:01,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-12-19 13:39:01,781 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 2368 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2368 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:39:01,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2368 Valid, 2675 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 13:39:01,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9327 states. [2023-12-19 13:39:02,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9327 to 6990. [2023-12-19 13:39:02,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6990 states, 6434 states have (on average 1.5966739198010569) internal successors, (10273), 6445 states have internal predecessors, (10273), 501 states have call successors, (501), 54 states have call predecessors, (501), 54 states have return successors, (501), 490 states have call predecessors, (501), 501 states have call successors, (501) [2023-12-19 13:39:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6990 states to 6990 states and 11275 transitions. [2023-12-19 13:39:02,180 INFO L78 Accepts]: Start accepts. Automaton has 6990 states and 11275 transitions. Word has length 491 [2023-12-19 13:39:02,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:39:02,181 INFO L495 AbstractCegarLoop]: Abstraction has 6990 states and 11275 transitions. [2023-12-19 13:39:02,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:39:02,181 INFO L276 IsEmpty]: Start isEmpty. Operand 6990 states and 11275 transitions. [2023-12-19 13:39:02,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-19 13:39:02,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:39:02,185 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:39:02,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 13:39:02,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:39:02,393 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:39:02,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:39:02,393 INFO L85 PathProgramCache]: Analyzing trace with hash 549173249, now seen corresponding path program 1 times [2023-12-19 13:39:02,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:39:02,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925361668] [2023-12-19 13:39:02,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:39:02,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:39:02,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:39:02,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765960086] [2023-12-19 13:39:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:39:02,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:39:02,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:39:02,434 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:39:02,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 13:39:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:39:02,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 13:39:02,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:39:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:39:03,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:39:03,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:39:03,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925361668] [2023-12-19 13:39:03,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:39:03,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765960086] [2023-12-19 13:39:03,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765960086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:39:03,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:39:03,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 13:39:03,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208017500] [2023-12-19 13:39:03,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:39:03,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:39:03,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:39:03,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:39:03,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:39:03,235 INFO L87 Difference]: Start difference. First operand 6990 states and 11275 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:39:04,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:39:04,397 INFO L93 Difference]: Finished difference Result 26673 states and 42722 transitions. [2023-12-19 13:39:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 13:39:04,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 491 [2023-12-19 13:39:04,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:39:04,418 INFO L225 Difference]: With dead ends: 26673 [2023-12-19 13:39:04,418 INFO L226 Difference]: Without dead ends: 19831 [2023-12-19 13:39:04,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-12-19 13:39:04,423 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 1598 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 3591 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:39:04,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 3591 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 13:39:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19831 states. [2023-12-19 13:39:04,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19831 to 8030. [2023-12-19 13:39:04,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8030 states, 7349 states have (on average 1.5881072254728534) internal successors, (11671), 7361 states have internal predecessors, (11671), 613 states have call successors, (613), 67 states have call predecessors, (613), 67 states have return successors, (613), 601 states have call predecessors, (613), 613 states have call successors, (613) [2023-12-19 13:39:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8030 states to 8030 states and 12897 transitions. [2023-12-19 13:39:04,783 INFO L78 Accepts]: Start accepts. Automaton has 8030 states and 12897 transitions. Word has length 491 [2023-12-19 13:39:04,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:39:04,784 INFO L495 AbstractCegarLoop]: Abstraction has 8030 states and 12897 transitions. [2023-12-19 13:39:04,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:39:04,784 INFO L276 IsEmpty]: Start isEmpty. Operand 8030 states and 12897 transitions. [2023-12-19 13:39:04,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-19 13:39:04,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:39:04,789 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:39:04,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 13:39:04,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:39:04,997 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:39:04,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:39:04,997 INFO L85 PathProgramCache]: Analyzing trace with hash 53524693, now seen corresponding path program 1 times [2023-12-19 13:39:04,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:39:04,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725590415] [2023-12-19 13:39:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:39:04,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:39:05,032 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:39:05,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923498970] [2023-12-19 13:39:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:39:05,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:39:05,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:39:05,034 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:39:05,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 13:39:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:39:05,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 13:39:05,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:39:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 13:39:06,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:39:06,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:39:06,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725590415] [2023-12-19 13:39:06,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:39:06,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923498970] [2023-12-19 13:39:06,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923498970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:39:06,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:39:06,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:39:06,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030794204] [2023-12-19 13:39:06,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:39:06,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:39:06,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:39:06,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:39:06,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:39:06,423 INFO L87 Difference]: Start difference. First operand 8030 states and 12897 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:39:07,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:39:07,303 INFO L93 Difference]: Finished difference Result 25548 states and 40884 transitions. [2023-12-19 13:39:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:39:07,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 491 [2023-12-19 13:39:07,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:39:07,333 INFO L225 Difference]: With dead ends: 25548 [2023-12-19 13:39:07,333 INFO L226 Difference]: Without dead ends: 17666 [2023-12-19 13:39:07,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 488 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 13:39:07,344 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 471 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:39:07,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1407 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:39:07,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17666 states. [2023-12-19 13:39:08,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17666 to 17150. [2023-12-19 13:39:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17150 states, 15869 states have (on average 1.5803768353393408) internal successors, (25079), 15893 states have internal predecessors, (25079), 1153 states have call successors, (1153), 127 states have call predecessors, (1153), 127 states have return successors, (1153), 1129 states have call predecessors, (1153), 1153 states have call successors, (1153) [2023-12-19 13:39:08,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17150 states to 17150 states and 27385 transitions. [2023-12-19 13:39:08,050 INFO L78 Accepts]: Start accepts. Automaton has 17150 states and 27385 transitions. Word has length 491 [2023-12-19 13:39:08,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:39:08,050 INFO L495 AbstractCegarLoop]: Abstraction has 17150 states and 27385 transitions. [2023-12-19 13:39:08,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 13:39:08,051 INFO L276 IsEmpty]: Start isEmpty. Operand 17150 states and 27385 transitions. [2023-12-19 13:39:08,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-19 13:39:08,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:39:08,057 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:39:08,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 13:39:08,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:39:08,266 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:39:08,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:39:08,267 INFO L85 PathProgramCache]: Analyzing trace with hash 497425367, now seen corresponding path program 1 times [2023-12-19 13:39:08,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:39:08,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883283449] [2023-12-19 13:39:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:39:08,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:39:08,302 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:39:08,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865724953] [2023-12-19 13:39:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:39:08,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:39:08,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:39:08,303 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:39:08,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process Received shutdown request... [2023-12-19 13:53:00,502 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 13:53:00,513 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 13:53:01,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-19 13:53:01,702 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forcibly destroying the process [2023-12-19 13:53:01,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 137 [2023-12-19 13:53:01,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-19 13:53:01,716 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 13:53:01,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 13:53:01,716 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 492 with TraceHistMax 73,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-19 13:53:01,733 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:53:01,736 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 13:53:01,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 01:53:01 BoogieIcfgContainer [2023-12-19 13:53:01,754 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 13:53:01,754 INFO L158 Benchmark]: Toolchain (without parser) took 875689.39ms. Allocated memory was 238.0MB in the beginning and 1.1GB in the end (delta: 909.1MB). Free memory was 193.8MB in the beginning and 631.2MB in the end (delta: -437.4MB). Peak memory consumption was 471.0MB. Max. memory is 8.0GB. [2023-12-19 13:53:01,754 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 168.8MB. Free memory is still 121.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 13:53:01,754 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.85ms. Allocated memory is still 238.0MB. Free memory was 193.5MB in the beginning and 157.1MB in the end (delta: 36.4MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-19 13:53:01,754 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.27ms. Allocated memory is still 238.0MB. Free memory was 157.1MB in the beginning and 198.8MB in the end (delta: -41.7MB). Peak memory consumption was 23.7MB. Max. memory is 8.0GB. [2023-12-19 13:53:01,755 INFO L158 Benchmark]: Boogie Preprocessor took 124.74ms. Allocated memory is still 238.0MB. Free memory was 198.8MB in the beginning and 165.2MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-19 13:53:01,755 INFO L158 Benchmark]: RCFGBuilder took 994.96ms. Allocated memory is still 238.0MB. Free memory was 165.2MB in the beginning and 193.6MB in the end (delta: -28.3MB). Peak memory consumption was 103.3MB. Max. memory is 8.0GB. [2023-12-19 13:53:01,755 INFO L158 Benchmark]: TraceAbstraction took 874000.10ms. Allocated memory was 238.0MB in the beginning and 1.1GB in the end (delta: 909.1MB). Free memory was 193.0MB in the beginning and 631.2MB in the end (delta: -438.2MB). Peak memory consumption was 470.9MB. Max. memory is 8.0GB. [2023-12-19 13:53:01,759 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 168.8MB. Free memory is still 121.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 444.85ms. Allocated memory is still 238.0MB. Free memory was 193.5MB in the beginning and 157.1MB in the end (delta: 36.4MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 120.27ms. Allocated memory is still 238.0MB. Free memory was 157.1MB in the beginning and 198.8MB in the end (delta: -41.7MB). Peak memory consumption was 23.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 124.74ms. Allocated memory is still 238.0MB. Free memory was 198.8MB in the beginning and 165.2MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * RCFGBuilder took 994.96ms. Allocated memory is still 238.0MB. Free memory was 165.2MB in the beginning and 193.6MB in the end (delta: -28.3MB). Peak memory consumption was 103.3MB. Max. memory is 8.0GB. * TraceAbstraction took 874000.10ms. Allocated memory was 238.0MB in the beginning and 1.1GB in the end (delta: 909.1MB). Free memory was 193.0MB in the beginning and 631.2MB in the end (delta: -438.2MB). Peak memory consumption was 470.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 492 with TraceHistMax 73,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 266 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 873.9s, OverallIterations: 23, TraceHistogramMax: 73, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25372 SdHoareTripleChecker+Valid, 7.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25275 mSDsluCounter, 42010 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29896 mSDsCounter, 4016 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5310 IncrementalHoareTripleChecker+Invalid, 9326 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4016 mSolverCounterUnsat, 12114 mSDtfsCounter, 5310 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12835 GetRequests, 12647 SyntacticMatches, 3 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17150occurred in iteration=22, InterpolantAutomatonStates: 191, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 22 MinimizatonAttempts, 45355 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 11276 NumberOfCodeBlocks, 11276 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 12721 ConstructedInterpolants, 0 QuantifiedInterpolants, 35170 SizeOfPredicates, 82 NumberOfNonLiveVariables, 26667 ConjunctsInSsa, 175 ConjunctsInUnsatCore, 26 InterpolantComputations, 18 PerfectInterpolantSequences, 272130/273312 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown