/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-80.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 14:20:59,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 14:20:59,467 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 14:20:59,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 14:20:59,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 14:20:59,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 14:20:59,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 14:20:59,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 14:20:59,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 14:20:59,497 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 14:20:59,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 14:20:59,498 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 14:20:59,498 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 14:20:59,499 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 14:20:59,499 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 14:20:59,499 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 14:20:59,499 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 14:20:59,500 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 14:20:59,500 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 14:20:59,500 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 14:20:59,500 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 14:20:59,500 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 14:20:59,500 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 14:20:59,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 14:20:59,501 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 14:20:59,501 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 14:20:59,501 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 14:20:59,501 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 14:20:59,502 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 14:20:59,502 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 14:20:59,502 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 14:20:59,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 14:20:59,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 14:20:59,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 14:20:59,503 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 14:20:59,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 14:20:59,503 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 14:20:59,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 14:20:59,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 14:20:59,503 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 14:20:59,504 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 14:20:59,504 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 14:20:59,504 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 14:20:59,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 14:20:59,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 14:20:59,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 14:20:59,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 14:20:59,706 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 14:20:59,707 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 14:20:59,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-80.i [2023-12-19 14:21:00,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 14:21:01,059 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 14:21:01,060 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-80.i [2023-12-19 14:21:01,074 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db0ebb936/751eea41b63c4c65b4e1865ad16c213c/FLAGcd22a911f [2023-12-19 14:21:01,084 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db0ebb936/751eea41b63c4c65b4e1865ad16c213c [2023-12-19 14:21:01,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 14:21:01,086 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 14:21:01,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 14:21:01,087 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 14:21:01,098 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 14:21:01,099 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:21:01" (1/1) ... [2023-12-19 14:21:01,100 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6edfef3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:21:01, skipping insertion in model container [2023-12-19 14:21:01,100 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:21:01" (1/1) ... [2023-12-19 14:21:01,145 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 14:21:01,252 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-80.i[916,929] [2023-12-19 14:21:01,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 14:21:01,424 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 14:21:01,433 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-80.i[916,929] [2023-12-19 14:21:01,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 14:21:01,517 INFO L206 MainTranslator]: Completed translation [2023-12-19 14:21:01,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:21:01 WrapperNode [2023-12-19 14:21:01,518 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 14:21:01,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 14:21:01,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 14:21:01,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 14:21:01,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:21:01" (1/1) ... [2023-12-19 14:21:01,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:21:01" (1/1) ... [2023-12-19 14:21:01,625 INFO L138 Inliner]: procedures = 26, calls = 82, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 746 [2023-12-19 14:21:01,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 14:21:01,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 14:21:01,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 14:21:01,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 14:21:01,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:21:01" (1/1) ... [2023-12-19 14:21:01,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:21:01" (1/1) ... [2023-12-19 14:21:01,653 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:21:01" (1/1) ... [2023-12-19 14:21:01,700 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 14:21:01,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:21:01" (1/1) ... [2023-12-19 14:21:01,701 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:21:01" (1/1) ... [2023-12-19 14:21:01,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:21:01" (1/1) ... [2023-12-19 14:21:01,731 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:21:01" (1/1) ... [2023-12-19 14:21:01,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:21:01" (1/1) ... [2023-12-19 14:21:01,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:21:01" (1/1) ... [2023-12-19 14:21:01,781 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 14:21:01,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 14:21:01,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 14:21:01,782 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 14:21:01,783 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:21:01" (1/1) ... [2023-12-19 14:21:01,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 14:21:01,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:01,804 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 14:21:01,813 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 14:21:01,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 14:21:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 14:21:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 14:21:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 14:21:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 14:21:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 14:21:01,934 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 14:21:01,937 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 14:21:02,805 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 14:21:02,857 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 14:21:02,857 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 14:21:02,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:21:02 BoogieIcfgContainer [2023-12-19 14:21:02,858 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 14:21:02,860 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 14:21:02,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 14:21:02,862 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 14:21:02,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 02:21:01" (1/3) ... [2023-12-19 14:21:02,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6219a87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:21:02, skipping insertion in model container [2023-12-19 14:21:02,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:21:01" (2/3) ... [2023-12-19 14:21:02,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6219a87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:21:02, skipping insertion in model container [2023-12-19 14:21:02,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:21:02" (3/3) ... [2023-12-19 14:21:02,865 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-80.i [2023-12-19 14:21:02,877 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 14:21:02,877 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 14:21:02,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 14:21:02,929 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;@6ca96bc0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 14:21:02,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 14:21:02,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 289 states, 217 states have (on average 1.5944700460829493) internal successors, (346), 218 states have internal predecessors, (346), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-19 14:21:02,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-12-19 14:21:02,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:02,961 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:02,962 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:02,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:02,968 INFO L85 PathProgramCache]: Analyzing trace with hash -537129120, now seen corresponding path program 1 times [2023-12-19 14:21:02,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:02,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737819128] [2023-12-19 14:21:02,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:02,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:03,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:03,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737819128] [2023-12-19 14:21:03,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 14:21:03,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443945690] [2023-12-19 14:21:03,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:03,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:03,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:03,326 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 14:21:03,352 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 14:21:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:03,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 14:21:03,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:03,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2023-12-19 14:21:03,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:21:03,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443945690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:21:03,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:21:03,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 14:21:03,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343112350] [2023-12-19 14:21:03,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:21:03,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 14:21:03,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:03,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 14:21:03,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 14:21:03,753 INFO L87 Difference]: Start difference. First operand has 289 states, 217 states have (on average 1.5944700460829493) internal successors, (346), 218 states have internal predecessors, (346), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-19 14:21:03,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:03,828 INFO L93 Difference]: Finished difference Result 575 states and 1035 transitions. [2023-12-19 14:21:03,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 14:21:03,830 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) Word has length 479 [2023-12-19 14:21:03,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:03,841 INFO L225 Difference]: With dead ends: 575 [2023-12-19 14:21:03,842 INFO L226 Difference]: Without dead ends: 287 [2023-12-19 14:21:03,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 478 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 14:21:03,850 INFO L413 NwaCegarLoop]: 476 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, 476 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 14:21:03,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 476 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:21:03,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-19 14:21:03,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-12-19 14:21:03,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 216 states have (on average 1.5787037037037037) internal successors, (341), 216 states have internal predecessors, (341), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-19 14:21:03,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 479 transitions. [2023-12-19 14:21:03,919 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 479 transitions. Word has length 479 [2023-12-19 14:21:03,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:03,921 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 479 transitions. [2023-12-19 14:21:03,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-19 14:21:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 479 transitions. [2023-12-19 14:21:03,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-12-19 14:21:03,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:03,931 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:03,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 14:21:04,155 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 14:21:04,156 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:04,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:04,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1715395102, now seen corresponding path program 1 times [2023-12-19 14:21:04,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:04,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832893181] [2023-12-19 14:21:04,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:04,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:04,278 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:04,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674684036] [2023-12-19 14:21:04,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:04,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:04,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:04,279 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 14:21:04,317 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 14:21:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:04,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:21:04,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:04,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-19 14:21:04,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:21:04,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:04,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832893181] [2023-12-19 14:21:04,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:04,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674684036] [2023-12-19 14:21:04,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674684036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:21:04,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:21:04,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:21:04,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364503123] [2023-12-19 14:21:04,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:21:04,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:21:04,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:04,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:21:04,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:21:04,669 INFO L87 Difference]: Start difference. First operand 287 states and 479 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:04,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:04,775 INFO L93 Difference]: Finished difference Result 727 states and 1212 transitions. [2023-12-19 14:21:04,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:21:04,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 479 [2023-12-19 14:21:04,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:04,781 INFO L225 Difference]: With dead ends: 727 [2023-12-19 14:21:04,781 INFO L226 Difference]: Without dead ends: 441 [2023-12-19 14:21:04,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 477 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 14:21:04,784 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 242 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:04,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 908 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:21:04,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-12-19 14:21:04,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 438. [2023-12-19 14:21:04,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 364 states have (on average 1.6071428571428572) internal successors, (585), 365 states have internal predecessors, (585), 71 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-19 14:21:04,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 727 transitions. [2023-12-19 14:21:04,814 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 727 transitions. Word has length 479 [2023-12-19 14:21:04,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:04,816 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 727 transitions. [2023-12-19 14:21:04,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:04,816 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 727 transitions. [2023-12-19 14:21:04,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-19 14:21:04,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:04,820 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:04,827 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 14:21:05,027 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 14:21:05,028 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:05,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:05,028 INFO L85 PathProgramCache]: Analyzing trace with hash 153325564, now seen corresponding path program 1 times [2023-12-19 14:21:05,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:05,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377652189] [2023-12-19 14:21:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:05,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:05,112 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:05,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869280704] [2023-12-19 14:21:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:05,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:05,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:05,114 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 14:21:05,119 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 14:21:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:05,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:21:05,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-19 14:21:05,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:21:05,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:05,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377652189] [2023-12-19 14:21:05,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:05,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869280704] [2023-12-19 14:21:05,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869280704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:21:05,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:21:05,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:21:05,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136493624] [2023-12-19 14:21:05,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:21:05,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:21:05,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:05,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:21:05,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:21:05,459 INFO L87 Difference]: Start difference. First operand 438 states and 727 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:05,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:05,529 INFO L93 Difference]: Finished difference Result 1197 states and 1986 transitions. [2023-12-19 14:21:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:21:05,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 480 [2023-12-19 14:21:05,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:05,534 INFO L225 Difference]: With dead ends: 1197 [2023-12-19 14:21:05,534 INFO L226 Difference]: Without dead ends: 760 [2023-12-19 14:21:05,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 478 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 14:21:05,536 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 288 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:05,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1121 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:21:05,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2023-12-19 14:21:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 757. [2023-12-19 14:21:05,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 666 states have (on average 1.6216216216216217) internal successors, (1080), 669 states have internal predecessors, (1080), 86 states have call successors, (86), 4 states have call predecessors, (86), 4 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-19 14:21:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1252 transitions. [2023-12-19 14:21:05,559 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1252 transitions. Word has length 480 [2023-12-19 14:21:05,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:05,560 INFO L495 AbstractCegarLoop]: Abstraction has 757 states and 1252 transitions. [2023-12-19 14:21:05,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1252 transitions. [2023-12-19 14:21:05,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-19 14:21:05,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:05,564 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:05,573 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 14:21:05,773 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 14:21:05,773 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:05,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:05,774 INFO L85 PathProgramCache]: Analyzing trace with hash -989176902, now seen corresponding path program 1 times [2023-12-19 14:21:05,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:05,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147927720] [2023-12-19 14:21:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:05,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:05,837 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:05,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118392806] [2023-12-19 14:21:05,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:05,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:05,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:05,850 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 14:21:05,864 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 14:21:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:06,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:21:06,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-19 14:21:06,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:21:06,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:06,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147927720] [2023-12-19 14:21:06,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:06,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118392806] [2023-12-19 14:21:06,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118392806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:21:06,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:21:06,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:21:06,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778911348] [2023-12-19 14:21:06,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:21:06,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:21:06,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:06,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:21:06,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:21:06,228 INFO L87 Difference]: Start difference. First operand 757 states and 1252 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:06,282 INFO L93 Difference]: Finished difference Result 1520 states and 2508 transitions. [2023-12-19 14:21:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:21:06,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 480 [2023-12-19 14:21:06,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:06,286 INFO L225 Difference]: With dead ends: 1520 [2023-12-19 14:21:06,286 INFO L226 Difference]: Without dead ends: 764 [2023-12-19 14:21:06,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 478 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 14:21:06,288 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 233 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:06,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1010 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:21:06,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2023-12-19 14:21:06,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 644. [2023-12-19 14:21:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 569 states have (on average 1.6502636203866432) internal successors, (939), 570 states have internal predecessors, (939), 71 states have call successors, (71), 3 states have call predecessors, (71), 3 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-19 14:21:06,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1081 transitions. [2023-12-19 14:21:06,304 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1081 transitions. Word has length 480 [2023-12-19 14:21:06,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:06,305 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 1081 transitions. [2023-12-19 14:21:06,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:06,305 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1081 transitions. [2023-12-19 14:21:06,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-19 14:21:06,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:06,308 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:06,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 14:21:06,515 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 14:21:06,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:06,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:06,516 INFO L85 PathProgramCache]: Analyzing trace with hash 793333179, now seen corresponding path program 1 times [2023-12-19 14:21:06,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:06,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363093967] [2023-12-19 14:21:06,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:06,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:06,558 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:06,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216741789] [2023-12-19 14:21:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:06,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:06,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:06,560 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 14:21:06,585 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 14:21:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:06,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:21:06,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:06,881 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-19 14:21:06,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:21:06,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:06,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363093967] [2023-12-19 14:21:06,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:06,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216741789] [2023-12-19 14:21:06,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216741789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:21:06,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:21:06,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:21:06,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620721005] [2023-12-19 14:21:06,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:21:06,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:21:06,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:06,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:21:06,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:21:06,887 INFO L87 Difference]: Start difference. First operand 644 states and 1081 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:06,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:06,937 INFO L93 Difference]: Finished difference Result 1918 states and 3221 transitions. [2023-12-19 14:21:06,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:21:06,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 480 [2023-12-19 14:21:06,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:06,943 INFO L225 Difference]: With dead ends: 1918 [2023-12-19 14:21:06,943 INFO L226 Difference]: Without dead ends: 1275 [2023-12-19 14:21:06,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 478 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 14:21:06,945 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 467 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:06,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 1178 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:21:06,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2023-12-19 14:21:06,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 664. [2023-12-19 14:21:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 589 states have (on average 1.6451612903225807) internal successors, (969), 590 states have internal predecessors, (969), 71 states have call successors, (71), 3 states have call predecessors, (71), 3 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-19 14:21:06,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1111 transitions. [2023-12-19 14:21:06,974 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1111 transitions. Word has length 480 [2023-12-19 14:21:06,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:06,976 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 1111 transitions. [2023-12-19 14:21:06,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:06,976 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1111 transitions. [2023-12-19 14:21:06,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-19 14:21:06,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:06,979 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:07,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 14:21:07,186 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 14:21:07,187 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:07,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:07,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1099921019, now seen corresponding path program 1 times [2023-12-19 14:21:07,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:07,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017300177] [2023-12-19 14:21:07,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:07,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:07,248 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:07,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654641250] [2023-12-19 14:21:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:07,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:07,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:07,249 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 14:21:07,275 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 14:21:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:07,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:21:07,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-19 14:21:07,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:21:07,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:07,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017300177] [2023-12-19 14:21:07,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:07,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654641250] [2023-12-19 14:21:07,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654641250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:21:07,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:21:07,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:21:07,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653805632] [2023-12-19 14:21:07,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:21:07,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:21:07,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:07,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:21:07,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:21:07,602 INFO L87 Difference]: Start difference. First operand 664 states and 1111 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:07,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:07,651 INFO L93 Difference]: Finished difference Result 1944 states and 3247 transitions. [2023-12-19 14:21:07,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:21:07,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 480 [2023-12-19 14:21:07,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:07,655 INFO L225 Difference]: With dead ends: 1944 [2023-12-19 14:21:07,655 INFO L226 Difference]: Without dead ends: 1281 [2023-12-19 14:21:07,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 478 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 14:21:07,657 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 429 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:07,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 918 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:21:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2023-12-19 14:21:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1279. [2023-12-19 14:21:07,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1130 states have (on average 1.6300884955752213) internal successors, (1842), 1132 states have internal predecessors, (1842), 142 states have call successors, (142), 6 states have call predecessors, (142), 6 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 14:21:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 2126 transitions. [2023-12-19 14:21:07,691 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 2126 transitions. Word has length 480 [2023-12-19 14:21:07,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:07,692 INFO L495 AbstractCegarLoop]: Abstraction has 1279 states and 2126 transitions. [2023-12-19 14:21:07,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:07,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 2126 transitions. [2023-12-19 14:21:07,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-19 14:21:07,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:07,696 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:07,716 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 14:21:07,903 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 14:21:07,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:07,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:07,904 INFO L85 PathProgramCache]: Analyzing trace with hash -894223687, now seen corresponding path program 1 times [2023-12-19 14:21:07,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:07,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479896681] [2023-12-19 14:21:07,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:07,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:07,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:07,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386091185] [2023-12-19 14:21:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:07,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:07,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:07,943 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 14:21:07,958 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 14:21:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:08,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 14:21:08,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-19 14:21:08,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:21:08,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:08,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479896681] [2023-12-19 14:21:08,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:08,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386091185] [2023-12-19 14:21:08,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386091185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:21:08,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:21:08,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:21:08,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748471544] [2023-12-19 14:21:08,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:21:08,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:21:08,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:08,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:21:08,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:21:08,344 INFO L87 Difference]: Start difference. First operand 1279 states and 2126 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:08,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:08,480 INFO L93 Difference]: Finished difference Result 3525 states and 5848 transitions. [2023-12-19 14:21:08,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 14:21:08,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 480 [2023-12-19 14:21:08,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:08,487 INFO L225 Difference]: With dead ends: 3525 [2023-12-19 14:21:08,488 INFO L226 Difference]: Without dead ends: 2247 [2023-12-19 14:21:08,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 478 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 14:21:08,491 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 713 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:08,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1067 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:21:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2023-12-19 14:21:08,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 2185. [2023-12-19 14:21:08,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2185 states, 2034 states have (on average 1.6273352999016715) internal successors, (3310), 2036 states have internal predecessors, (3310), 142 states have call successors, (142), 8 states have call predecessors, (142), 8 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 14:21:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 3594 transitions. [2023-12-19 14:21:08,540 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 3594 transitions. Word has length 480 [2023-12-19 14:21:08,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:08,540 INFO L495 AbstractCegarLoop]: Abstraction has 2185 states and 3594 transitions. [2023-12-19 14:21:08,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:08,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 3594 transitions. [2023-12-19 14:21:08,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-19 14:21:08,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:08,545 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:08,569 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 14:21:08,753 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 14:21:08,753 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:08,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:08,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1134362423, now seen corresponding path program 1 times [2023-12-19 14:21:08,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:08,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647460533] [2023-12-19 14:21:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:08,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:08,792 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:08,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352913632] [2023-12-19 14:21:08,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:08,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:08,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:08,794 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 14:21:08,820 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 14:21:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:09,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:21:09,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-19 14:21:09,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:21:09,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:09,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647460533] [2023-12-19 14:21:09,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:09,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352913632] [2023-12-19 14:21:09,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352913632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:21:09,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:21:09,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 14:21:09,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758938436] [2023-12-19 14:21:09,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:21:09,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:21:09,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:09,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:21:09,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:21:09,143 INFO L87 Difference]: Start difference. First operand 2185 states and 3594 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:09,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:09,324 INFO L93 Difference]: Finished difference Result 4479 states and 7336 transitions. [2023-12-19 14:21:09,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 14:21:09,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 480 [2023-12-19 14:21:09,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:09,331 INFO L225 Difference]: With dead ends: 4479 [2023-12-19 14:21:09,331 INFO L226 Difference]: Without dead ends: 2247 [2023-12-19 14:21:09,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 14:21:09,334 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 919 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:09,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1430 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:21:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2023-12-19 14:21:09,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 2185. [2023-12-19 14:21:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2185 states, 2034 states have (on average 1.5998033431661751) internal successors, (3254), 2036 states have internal predecessors, (3254), 142 states have call successors, (142), 8 states have call predecessors, (142), 8 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 14:21:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 3538 transitions. [2023-12-19 14:21:09,390 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 3538 transitions. Word has length 480 [2023-12-19 14:21:09,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:09,391 INFO L495 AbstractCegarLoop]: Abstraction has 2185 states and 3538 transitions. [2023-12-19 14:21:09,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 3538 transitions. [2023-12-19 14:21:09,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-19 14:21:09,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:09,395 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:09,401 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 14:21:09,612 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 14:21:09,613 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:09,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:09,613 INFO L85 PathProgramCache]: Analyzing trace with hash -648935865, now seen corresponding path program 1 times [2023-12-19 14:21:09,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:09,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569375815] [2023-12-19 14:21:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:09,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:09,690 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:09,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62308950] [2023-12-19 14:21:09,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:09,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:09,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:09,692 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 14:21:09,695 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 14:21:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:10,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 14:21:10,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-19 14:21:10,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:21:10,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:10,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569375815] [2023-12-19 14:21:10,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:10,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62308950] [2023-12-19 14:21:10,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62308950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:21:10,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:21:10,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:21:10,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130016366] [2023-12-19 14:21:10,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:21:10,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:21:10,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:10,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:21:10,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:21:10,032 INFO L87 Difference]: Start difference. First operand 2185 states and 3538 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:10,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:10,179 INFO L93 Difference]: Finished difference Result 6541 states and 10440 transitions. [2023-12-19 14:21:10,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:21:10,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 480 [2023-12-19 14:21:10,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:10,192 INFO L225 Difference]: With dead ends: 6541 [2023-12-19 14:21:10,192 INFO L226 Difference]: Without dead ends: 4357 [2023-12-19 14:21:10,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 478 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 14:21:10,197 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 976 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:10,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 2231 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:21:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2023-12-19 14:21:10,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 2165. [2023-12-19 14:21:10,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2165 states, 2014 states have (on average 1.595829195630586) internal successors, (3214), 2016 states have internal predecessors, (3214), 142 states have call successors, (142), 8 states have call predecessors, (142), 8 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 14:21:10,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 3498 transitions. [2023-12-19 14:21:10,298 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 3498 transitions. Word has length 480 [2023-12-19 14:21:10,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:10,298 INFO L495 AbstractCegarLoop]: Abstraction has 2165 states and 3498 transitions. [2023-12-19 14:21:10,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:10,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 3498 transitions. [2023-12-19 14:21:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-19 14:21:10,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:10,303 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:10,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 14:21:10,510 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 14:21:10,511 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:10,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:10,511 INFO L85 PathProgramCache]: Analyzing trace with hash -201370355, now seen corresponding path program 1 times [2023-12-19 14:21:10,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:10,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350268812] [2023-12-19 14:21:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:10,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:10,548 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:10,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605779633] [2023-12-19 14:21:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:10,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:10,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:10,549 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 14:21:10,556 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 14:21:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:10,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 14:21:10,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:10,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-19 14:21:10,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:21:10,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:10,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350268812] [2023-12-19 14:21:10,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:10,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605779633] [2023-12-19 14:21:10,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605779633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:21:10,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:21:10,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:21:10,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546538367] [2023-12-19 14:21:10,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:21:10,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:21:10,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:10,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:21:10,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:21:10,895 INFO L87 Difference]: Start difference. First operand 2165 states and 3498 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:11,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:11,047 INFO L93 Difference]: Finished difference Result 5597 states and 8987 transitions. [2023-12-19 14:21:11,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:21:11,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 481 [2023-12-19 14:21:11,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:11,057 INFO L225 Difference]: With dead ends: 5597 [2023-12-19 14:21:11,057 INFO L226 Difference]: Without dead ends: 3433 [2023-12-19 14:21:11,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 479 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 14:21:11,061 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 898 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:11,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 2133 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:21:11,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2023-12-19 14:21:11,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 2258. [2023-12-19 14:21:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2258 states, 2111 states have (on average 1.577451444812885) internal successors, (3330), 2111 states have internal predecessors, (3330), 138 states have call successors, (138), 8 states have call predecessors, (138), 8 states have return successors, (138), 138 states have call predecessors, (138), 138 states have call successors, (138) [2023-12-19 14:21:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2258 states to 2258 states and 3606 transitions. [2023-12-19 14:21:11,163 INFO L78 Accepts]: Start accepts. Automaton has 2258 states and 3606 transitions. Word has length 481 [2023-12-19 14:21:11,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:11,163 INFO L495 AbstractCegarLoop]: Abstraction has 2258 states and 3606 transitions. [2023-12-19 14:21:11,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:11,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2258 states and 3606 transitions. [2023-12-19 14:21:11,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-19 14:21:11,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:11,168 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:11,182 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 14:21:11,375 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 14:21:11,376 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:11,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:11,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1875966543, now seen corresponding path program 1 times [2023-12-19 14:21:11,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:11,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628280954] [2023-12-19 14:21:11,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:11,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:11,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:11,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487482646] [2023-12-19 14:21:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:11,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:11,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:11,437 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 14:21:11,463 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 14:21:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:11,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 14:21:11,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-19 14:21:12,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:21:12,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:12,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628280954] [2023-12-19 14:21:12,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:12,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487482646] [2023-12-19 14:21:12,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487482646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:21:12,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:21:12,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:21:12,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811830169] [2023-12-19 14:21:12,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:21:12,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:21:12,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:12,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:21:12,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:21:12,555 INFO L87 Difference]: Start difference. First operand 2258 states and 3606 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:12,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:12,767 INFO L93 Difference]: Finished difference Result 6827 states and 10891 transitions. [2023-12-19 14:21:12,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 14:21:12,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 481 [2023-12-19 14:21:12,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:12,780 INFO L225 Difference]: With dead ends: 6827 [2023-12-19 14:21:12,780 INFO L226 Difference]: Without dead ends: 4570 [2023-12-19 14:21:12,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 478 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 14:21:12,785 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 673 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:12,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1567 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 14:21:12,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2023-12-19 14:21:12,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4027. [2023-12-19 14:21:12,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4027 states, 3734 states have (on average 1.5757900374933047) internal successors, (5884), 3734 states have internal predecessors, (5884), 276 states have call successors, (276), 16 states have call predecessors, (276), 16 states have return successors, (276), 276 states have call predecessors, (276), 276 states have call successors, (276) [2023-12-19 14:21:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 6436 transitions. [2023-12-19 14:21:12,895 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 6436 transitions. Word has length 481 [2023-12-19 14:21:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:12,896 INFO L495 AbstractCegarLoop]: Abstraction has 4027 states and 6436 transitions. [2023-12-19 14:21:12,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:12,896 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 6436 transitions. [2023-12-19 14:21:12,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-19 14:21:12,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:12,902 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:12,909 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 14:21:13,109 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 14:21:13,110 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:13,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:13,111 INFO L85 PathProgramCache]: Analyzing trace with hash -800025839, now seen corresponding path program 1 times [2023-12-19 14:21:13,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:13,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696280356] [2023-12-19 14:21:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:13,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:13,177 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:13,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926878158] [2023-12-19 14:21:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:13,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:13,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:13,179 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 14:21:13,205 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 14:21:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:13,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 14:21:13,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-19 14:21:13,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:21:13,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:13,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696280356] [2023-12-19 14:21:13,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:13,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926878158] [2023-12-19 14:21:13,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926878158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:21:13,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:21:13,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 14:21:13,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889782923] [2023-12-19 14:21:13,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:21:13,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:21:13,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:13,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:21:13,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:21:13,972 INFO L87 Difference]: Start difference. First operand 4027 states and 6436 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:14,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:14,901 INFO L93 Difference]: Finished difference Result 11027 states and 17544 transitions. [2023-12-19 14:21:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 14:21:14,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 481 [2023-12-19 14:21:14,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:14,927 INFO L225 Difference]: With dead ends: 11027 [2023-12-19 14:21:14,927 INFO L226 Difference]: Without dead ends: 8672 [2023-12-19 14:21:14,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-12-19 14:21:14,933 INFO L413 NwaCegarLoop]: 1115 mSDtfsCounter, 3777 mSDsluCounter, 3840 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3777 SdHoareTripleChecker+Valid, 4955 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:14,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3777 Valid, 4955 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 14:21:14,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8672 states. [2023-12-19 14:21:15,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8672 to 6711. [2023-12-19 14:21:15,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6711 states, 6199 states have (on average 1.5744474915308921) internal successors, (9760), 6199 states have internal predecessors, (9760), 483 states have call successors, (483), 28 states have call predecessors, (483), 28 states have return successors, (483), 483 states have call predecessors, (483), 483 states have call successors, (483) [2023-12-19 14:21:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6711 states to 6711 states and 10726 transitions. [2023-12-19 14:21:15,107 INFO L78 Accepts]: Start accepts. Automaton has 6711 states and 10726 transitions. Word has length 481 [2023-12-19 14:21:15,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:15,107 INFO L495 AbstractCegarLoop]: Abstraction has 6711 states and 10726 transitions. [2023-12-19 14:21:15,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:15,107 INFO L276 IsEmpty]: Start isEmpty. Operand 6711 states and 10726 transitions. [2023-12-19 14:21:15,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-19 14:21:15,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:15,113 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:15,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 14:21:15,320 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 14:21:15,321 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:15,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:15,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1268680449, now seen corresponding path program 1 times [2023-12-19 14:21:15,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:15,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85120483] [2023-12-19 14:21:15,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:15,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:15,358 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:15,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010481825] [2023-12-19 14:21:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:15,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:15,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:15,360 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 14:21:15,411 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 14:21:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:15,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:21:15,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 3120 proven. 162 refuted. 0 times theorem prover too weak. 6102 trivial. 0 not checked. [2023-12-19 14:21:16,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:21:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 42 proven. 162 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-12-19 14:21:16,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:16,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85120483] [2023-12-19 14:21:16,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:16,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010481825] [2023-12-19 14:21:16,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010481825] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:21:16,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:21:16,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 14:21:16,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727331262] [2023-12-19 14:21:16,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:21:16,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:21:16,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:16,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:21:16,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:21:16,328 INFO L87 Difference]: Start difference. First operand 6711 states and 10726 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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 14:21:16,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:16,670 INFO L93 Difference]: Finished difference Result 10984 states and 17495 transitions. [2023-12-19 14:21:16,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:21:16,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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 481 [2023-12-19 14:21:16,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:16,679 INFO L225 Difference]: With dead ends: 10984 [2023-12-19 14:21:16,679 INFO L226 Difference]: Without dead ends: 4274 [2023-12-19 14:21:16,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 954 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 14:21:16,688 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 601 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:16,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 1017 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 14:21:16,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2023-12-19 14:21:16,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4232. [2023-12-19 14:21:16,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4232 states, 3713 states have (on average 1.5459197414489632) internal successors, (5740), 3713 states have internal predecessors, (5740), 483 states have call successors, (483), 35 states have call predecessors, (483), 35 states have return successors, (483), 483 states have call predecessors, (483), 483 states have call successors, (483) [2023-12-19 14:21:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 6706 transitions. [2023-12-19 14:21:16,828 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 6706 transitions. Word has length 481 [2023-12-19 14:21:16,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:16,828 INFO L495 AbstractCegarLoop]: Abstraction has 4232 states and 6706 transitions. [2023-12-19 14:21:16,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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 14:21:16,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 6706 transitions. [2023-12-19 14:21:16,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-19 14:21:16,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:16,833 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:16,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 14:21:17,039 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 14:21:17,040 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:17,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:17,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1292196752, now seen corresponding path program 1 times [2023-12-19 14:21:17,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:17,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046478935] [2023-12-19 14:21:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:17,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:17,078 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:17,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157261477] [2023-12-19 14:21:17,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:17,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:17,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:17,079 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 14:21:17,107 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 14:21:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:17,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:21:17,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 1100 proven. 192 refuted. 0 times theorem prover too weak. 8092 trivial. 0 not checked. [2023-12-19 14:21:17,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:21:18,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 12 proven. 192 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-12-19 14:21:18,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:18,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046478935] [2023-12-19 14:21:18,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:18,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157261477] [2023-12-19 14:21:18,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157261477] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:21:18,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:21:18,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 14:21:18,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306769531] [2023-12-19 14:21:18,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:21:18,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:21:18,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:18,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:21:18,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:21:18,067 INFO L87 Difference]: Start difference. First operand 4232 states and 6706 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2023-12-19 14:21:18,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:18,493 INFO L93 Difference]: Finished difference Result 7370 states and 11561 transitions. [2023-12-19 14:21:18,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 14:21:18,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) Word has length 481 [2023-12-19 14:21:18,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:18,499 INFO L225 Difference]: With dead ends: 7370 [2023-12-19 14:21:18,499 INFO L226 Difference]: Without dead ends: 2721 [2023-12-19 14:21:18,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 954 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 14:21:18,506 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 238 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:18,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 951 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:21:18,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2023-12-19 14:21:18,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2663. [2023-12-19 14:21:18,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2137 states have (on average 1.4749649040711277) internal successors, (3152), 2137 states have internal predecessors, (3152), 483 states have call successors, (483), 42 states have call predecessors, (483), 42 states have return successors, (483), 483 states have call predecessors, (483), 483 states have call successors, (483) [2023-12-19 14:21:18,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 4118 transitions. [2023-12-19 14:21:18,615 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 4118 transitions. Word has length 481 [2023-12-19 14:21:18,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:18,615 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 4118 transitions. [2023-12-19 14:21:18,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2023-12-19 14:21:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 4118 transitions. [2023-12-19 14:21:18,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-12-19 14:21:18,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:18,619 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:18,626 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 14:21:18,826 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 14:21:18,827 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:18,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:18,827 INFO L85 PathProgramCache]: Analyzing trace with hash -2123196325, now seen corresponding path program 1 times [2023-12-19 14:21:18,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:18,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361802363] [2023-12-19 14:21:18,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:18,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:18,869 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:18,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923084044] [2023-12-19 14:21:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:18,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:18,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:18,870 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 14:21:18,897 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 14:21:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:19,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:21:19,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 600 proven. 198 refuted. 0 times theorem prover too weak. 8586 trivial. 0 not checked. [2023-12-19 14:21:19,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:21:19,866 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 6 proven. 198 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-12-19 14:21:19,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:19,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361802363] [2023-12-19 14:21:19,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:19,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923084044] [2023-12-19 14:21:19,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923084044] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:21:19,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:21:19,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 14:21:19,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014627147] [2023-12-19 14:21:19,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:21:19,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:21:19,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:19,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:21:19,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:21:19,869 INFO L87 Difference]: Start difference. First operand 2663 states and 4118 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) [2023-12-19 14:21:20,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:20,196 INFO L93 Difference]: Finished difference Result 3594 states and 5522 transitions. [2023-12-19 14:21:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 14:21:20,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) Word has length 482 [2023-12-19 14:21:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:20,199 INFO L225 Difference]: With dead ends: 3594 [2023-12-19 14:21:20,199 INFO L226 Difference]: Without dead ends: 932 [2023-12-19 14:21:20,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 956 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 14:21:20,203 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 249 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:20,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 875 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:21:20,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2023-12-19 14:21:20,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 914. [2023-12-19 14:21:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 685 states have (on average 1.416058394160584) internal successors, (970), 685 states have internal predecessors, (970), 207 states have call successors, (207), 21 states have call predecessors, (207), 21 states have return successors, (207), 207 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-19 14:21:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1384 transitions. [2023-12-19 14:21:20,251 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1384 transitions. Word has length 482 [2023-12-19 14:21:20,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:20,251 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1384 transitions. [2023-12-19 14:21:20,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) [2023-12-19 14:21:20,251 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1384 transitions. [2023-12-19 14:21:20,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-12-19 14:21:20,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:20,254 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:20,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-19 14:21:20,460 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 14:21:20,461 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:20,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:20,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1247618350, now seen corresponding path program 1 times [2023-12-19 14:21:20,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:20,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890045727] [2023-12-19 14:21:20,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:20,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:20,498 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:20,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307424244] [2023-12-19 14:21:20,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:20,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:20,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:20,500 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 14:21:20,536 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 14:21:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:20,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 14:21:20,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 3830 proven. 147 refuted. 0 times theorem prover too weak. 5407 trivial. 0 not checked. [2023-12-19 14:21:21,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:21:21,740 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 57 proven. 147 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-12-19 14:21:21,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:21,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890045727] [2023-12-19 14:21:21,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:21,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307424244] [2023-12-19 14:21:21,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307424244] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:21:21,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:21:21,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2023-12-19 14:21:21,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175223472] [2023-12-19 14:21:21,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:21:21,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 14:21:21,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:21,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 14:21:21,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-19 14:21:21,743 INFO L87 Difference]: Start difference. First operand 914 states and 1384 transitions. Second operand has 12 states, 12 states have (on average 17.5) internal successors, (210), 12 states have internal predecessors, (210), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-19 14:21:22,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:22,327 INFO L93 Difference]: Finished difference Result 1691 states and 2542 transitions. [2023-12-19 14:21:22,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 14:21:22,328 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.5) internal successors, (210), 12 states have internal predecessors, (210), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) Word has length 482 [2023-12-19 14:21:22,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:22,331 INFO L225 Difference]: With dead ends: 1691 [2023-12-19 14:21:22,331 INFO L226 Difference]: Without dead ends: 944 [2023-12-19 14:21:22,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 951 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2023-12-19 14:21:22,333 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 743 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:22,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1513 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 14:21:22,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-12-19 14:21:22,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 916. [2023-12-19 14:21:22,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 682 states have (on average 1.3900293255131966) internal successors, (948), 682 states have internal predecessors, (948), 207 states have call successors, (207), 26 states have call predecessors, (207), 26 states have return successors, (207), 207 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-19 14:21:22,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1362 transitions. [2023-12-19 14:21:22,379 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1362 transitions. Word has length 482 [2023-12-19 14:21:22,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:22,379 INFO L495 AbstractCegarLoop]: Abstraction has 916 states and 1362 transitions. [2023-12-19 14:21:22,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.5) internal successors, (210), 12 states have internal predecessors, (210), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-19 14:21:22,379 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1362 transitions. [2023-12-19 14:21:22,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-12-19 14:21:22,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:22,382 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:22,392 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 14:21:22,592 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 14:21:22,593 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:22,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:22,593 INFO L85 PathProgramCache]: Analyzing trace with hash 429969900, now seen corresponding path program 1 times [2023-12-19 14:21:22,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:22,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530453404] [2023-12-19 14:21:22,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:22,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:22,642 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:22,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533184929] [2023-12-19 14:21:22,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:22,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:22,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:22,653 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 14:21:22,666 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 14:21:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:23,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 14:21:23,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4748 proven. 96 refuted. 0 times theorem prover too weak. 4540 trivial. 0 not checked. [2023-12-19 14:21:23,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:21:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 108 proven. 96 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-12-19 14:21:24,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:24,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530453404] [2023-12-19 14:21:24,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:24,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533184929] [2023-12-19 14:21:24,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533184929] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:21:24,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:21:24,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-19 14:21:24,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353295002] [2023-12-19 14:21:24,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:21:24,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 14:21:24,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:24,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 14:21:24,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-19 14:21:24,104 INFO L87 Difference]: Start difference. First operand 916 states and 1362 transitions. Second operand has 15 states, 15 states have (on average 16.066666666666666) internal successors, (241), 15 states have internal predecessors, (241), 4 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (138), 4 states have call predecessors, (138), 4 states have call successors, (138) [2023-12-19 14:21:25,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:25,407 INFO L93 Difference]: Finished difference Result 3560 states and 5212 transitions. [2023-12-19 14:21:25,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 14:21:25,408 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 16.066666666666666) internal successors, (241), 15 states have internal predecessors, (241), 4 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (138), 4 states have call predecessors, (138), 4 states have call successors, (138) Word has length 482 [2023-12-19 14:21:25,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:25,413 INFO L225 Difference]: With dead ends: 3560 [2023-12-19 14:21:25,413 INFO L226 Difference]: Without dead ends: 2792 [2023-12-19 14:21:25,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 971 GetRequests, 949 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2023-12-19 14:21:25,416 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 2238 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:25,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2274 Valid, 2543 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 14:21:25,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2023-12-19 14:21:25,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2530. [2023-12-19 14:21:25,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2042 states have (on average 1.4187071498530852) internal successors, (2897), 2044 states have internal predecessors, (2897), 417 states have call successors, (417), 70 states have call predecessors, (417), 70 states have return successors, (417), 415 states have call predecessors, (417), 417 states have call successors, (417) [2023-12-19 14:21:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 3731 transitions. [2023-12-19 14:21:25,519 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 3731 transitions. Word has length 482 [2023-12-19 14:21:25,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:25,519 INFO L495 AbstractCegarLoop]: Abstraction has 2530 states and 3731 transitions. [2023-12-19 14:21:25,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.066666666666666) internal successors, (241), 15 states have internal predecessors, (241), 4 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (138), 4 states have call predecessors, (138), 4 states have call successors, (138) [2023-12-19 14:21:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 3731 transitions. [2023-12-19 14:21:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-12-19 14:21:25,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:25,522 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:25,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-19 14:21:25,730 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 14:21:25,730 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:25,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:25,731 INFO L85 PathProgramCache]: Analyzing trace with hash 414451182, now seen corresponding path program 1 times [2023-12-19 14:21:25,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:25,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285003965] [2023-12-19 14:21:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:25,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:25,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:25,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313775457] [2023-12-19 14:21:25,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:25,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:25,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:25,771 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 14:21:25,798 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 14:21:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:26,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 14:21:26,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4704 proven. 90 refuted. 0 times theorem prover too weak. 4590 trivial. 0 not checked. [2023-12-19 14:21:26,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:21:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 114 proven. 90 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-12-19 14:21:26,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:26,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285003965] [2023-12-19 14:21:26,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:26,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313775457] [2023-12-19 14:21:26,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313775457] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:21:26,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:21:26,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 14:21:26,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473140659] [2023-12-19 14:21:26,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:21:26,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 14:21:26,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:26,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 14:21:26,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-19 14:21:26,610 INFO L87 Difference]: Start difference. First operand 2530 states and 3731 transitions. Second operand has 10 states, 10 states have (on average 17.8) internal successors, (178), 10 states have internal predecessors, (178), 3 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2023-12-19 14:21:27,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:27,086 INFO L93 Difference]: Finished difference Result 4975 states and 7301 transitions. [2023-12-19 14:21:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:21:27,087 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 10 states have internal predecessors, (178), 3 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) Word has length 482 [2023-12-19 14:21:27,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:27,092 INFO L225 Difference]: With dead ends: 4975 [2023-12-19 14:21:27,092 INFO L226 Difference]: Without dead ends: 2616 [2023-12-19 14:21:27,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-19 14:21:27,096 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 865 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:27,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 1026 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:21:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2023-12-19 14:21:27,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 2550. [2023-12-19 14:21:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 2057 states have (on average 1.411764705882353) internal successors, (2904), 2059 states have internal predecessors, (2904), 417 states have call successors, (417), 75 states have call predecessors, (417), 75 states have return successors, (417), 415 states have call predecessors, (417), 417 states have call successors, (417) [2023-12-19 14:21:27,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3738 transitions. [2023-12-19 14:21:27,213 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3738 transitions. Word has length 482 [2023-12-19 14:21:27,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:27,213 INFO L495 AbstractCegarLoop]: Abstraction has 2550 states and 3738 transitions. [2023-12-19 14:21:27,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 10 states have internal predecessors, (178), 3 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2023-12-19 14:21:27,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3738 transitions. [2023-12-19 14:21:27,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-12-19 14:21:27,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:27,216 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:27,226 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 14:21:27,424 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 14:21:27,425 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:27,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:27,425 INFO L85 PathProgramCache]: Analyzing trace with hash -2004033296, now seen corresponding path program 1 times [2023-12-19 14:21:27,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:27,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872942421] [2023-12-19 14:21:27,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:27,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:27,475 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:27,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091048133] [2023-12-19 14:21:27,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:27,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:27,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:27,476 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 14:21:27,503 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 14:21:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:27,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 14:21:27,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:29,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4592 proven. 0 refuted. 0 times theorem prover too weak. 4792 trivial. 0 not checked. [2023-12-19 14:21:29,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:21:29,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:29,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872942421] [2023-12-19 14:21:29,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:29,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091048133] [2023-12-19 14:21:29,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091048133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:21:29,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:21:29,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 14:21:29,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866916103] [2023-12-19 14:21:29,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:21:29,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 14:21:29,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:29,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 14:21:29,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-19 14:21:29,755 INFO L87 Difference]: Start difference. First operand 2550 states and 3738 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 8 states have internal predecessors, (143), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-19 14:21:31,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:31,302 INFO L93 Difference]: Finished difference Result 9596 states and 14027 transitions. [2023-12-19 14:21:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 14:21:31,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 8 states have internal predecessors, (143), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 482 [2023-12-19 14:21:31,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:31,327 INFO L225 Difference]: With dead ends: 9596 [2023-12-19 14:21:31,327 INFO L226 Difference]: Without dead ends: 7628 [2023-12-19 14:21:31,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2023-12-19 14:21:31,332 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 2012 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:31,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2012 Valid, 2546 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 14:21:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7628 states. [2023-12-19 14:21:31,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7628 to 4936. [2023-12-19 14:21:31,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4936 states, 4031 states have (on average 1.418506574051104) internal successors, (5718), 4035 states have internal predecessors, (5718), 765 states have call successors, (765), 139 states have call predecessors, (765), 139 states have return successors, (765), 761 states have call predecessors, (765), 765 states have call successors, (765) [2023-12-19 14:21:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4936 states to 4936 states and 7248 transitions. [2023-12-19 14:21:31,583 INFO L78 Accepts]: Start accepts. Automaton has 4936 states and 7248 transitions. Word has length 482 [2023-12-19 14:21:31,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:31,583 INFO L495 AbstractCegarLoop]: Abstraction has 4936 states and 7248 transitions. [2023-12-19 14:21:31,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 8 states have internal predecessors, (143), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-19 14:21:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4936 states and 7248 transitions. [2023-12-19 14:21:31,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-12-19 14:21:31,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:31,588 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:31,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 14:21:31,796 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 14:21:31,796 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:31,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1781460910, now seen corresponding path program 1 times [2023-12-19 14:21:31,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:31,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23666947] [2023-12-19 14:21:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:31,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:31,864 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:31,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735696160] [2023-12-19 14:21:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:31,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:31,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:31,865 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 14:21:31,880 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 14:21:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:32,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 14:21:32,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:33,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-19 14:21:33,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:21:33,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:33,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23666947] [2023-12-19 14:21:33,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:33,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735696160] [2023-12-19 14:21:33,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735696160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:21:33,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:21:33,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 14:21:33,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732466911] [2023-12-19 14:21:33,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:21:33,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 14:21:33,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:33,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 14:21:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 14:21:33,787 INFO L87 Difference]: Start difference. First operand 4936 states and 7248 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:34,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:34,929 INFO L93 Difference]: Finished difference Result 9992 states and 14585 transitions. [2023-12-19 14:21:34,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 14:21:34,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 482 [2023-12-19 14:21:34,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:34,939 INFO L225 Difference]: With dead ends: 9992 [2023-12-19 14:21:34,940 INFO L226 Difference]: Without dead ends: 6106 [2023-12-19 14:21:34,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-19 14:21:34,945 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 1103 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 3285 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:34,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 3285 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 14:21:34,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6106 states. [2023-12-19 14:21:35,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6106 to 4892. [2023-12-19 14:21:35,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4892 states, 3987 states have (on average 1.4150990719839478) internal successors, (5642), 3991 states have internal predecessors, (5642), 765 states have call successors, (765), 139 states have call predecessors, (765), 139 states have return successors, (765), 761 states have call predecessors, (765), 765 states have call successors, (765) [2023-12-19 14:21:35,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4892 states to 4892 states and 7172 transitions. [2023-12-19 14:21:35,201 INFO L78 Accepts]: Start accepts. Automaton has 4892 states and 7172 transitions. Word has length 482 [2023-12-19 14:21:35,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:35,202 INFO L495 AbstractCegarLoop]: Abstraction has 4892 states and 7172 transitions. [2023-12-19 14:21:35,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:35,202 INFO L276 IsEmpty]: Start isEmpty. Operand 4892 states and 7172 transitions. [2023-12-19 14:21:35,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-12-19 14:21:35,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:35,207 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:35,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-19 14:21:35,414 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 14:21:35,414 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:35,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:35,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1837019092, now seen corresponding path program 1 times [2023-12-19 14:21:35,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:35,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002649876] [2023-12-19 14:21:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:35,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:35,451 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:35,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172773714] [2023-12-19 14:21:35,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:35,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:35,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:35,452 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 14:21:35,478 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 14:21:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:35,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 14:21:35,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-19 14:21:36,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:21:36,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:36,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002649876] [2023-12-19 14:21:36,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:36,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172773714] [2023-12-19 14:21:36,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172773714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:21:36,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:21:36,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 14:21:36,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269239201] [2023-12-19 14:21:36,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:21:36,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 14:21:36,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:36,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 14:21:36,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-19 14:21:36,980 INFO L87 Difference]: Start difference. First operand 4892 states and 7172 transitions. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 10 states have internal predecessors, (141), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:41,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:21:41,369 INFO L93 Difference]: Finished difference Result 16277 states and 23743 transitions. [2023-12-19 14:21:41,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-19 14:21:41,370 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 10 states have internal predecessors, (141), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 483 [2023-12-19 14:21:41,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:21:41,394 INFO L225 Difference]: With dead ends: 16277 [2023-12-19 14:21:41,395 INFO L226 Difference]: Without dead ends: 14962 [2023-12-19 14:21:41,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=612, Invalid=2358, Unknown=0, NotChecked=0, Total=2970 [2023-12-19 14:21:41,401 INFO L413 NwaCegarLoop]: 1208 mSDtfsCounter, 8061 mSDsluCounter, 5593 mSDsCounter, 0 mSdLazyCounter, 4620 mSolverCounterSat, 910 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8061 SdHoareTripleChecker+Valid, 6801 SdHoareTripleChecker+Invalid, 5530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 4620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:41,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8061 Valid, 6801 Invalid, 5530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [910 Valid, 4620 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 14:21:41,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14962 states. [2023-12-19 14:21:41,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14962 to 9015. [2023-12-19 14:21:41,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9015 states, 7511 states have (on average 1.4204500066569032) internal successors, (10669), 7528 states have internal predecessors, (10669), 1239 states have call successors, (1239), 264 states have call predecessors, (1239), 264 states have return successors, (1239), 1222 states have call predecessors, (1239), 1239 states have call successors, (1239) [2023-12-19 14:21:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9015 states to 9015 states and 13147 transitions. [2023-12-19 14:21:41,979 INFO L78 Accepts]: Start accepts. Automaton has 9015 states and 13147 transitions. Word has length 483 [2023-12-19 14:21:41,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:21:41,979 INFO L495 AbstractCegarLoop]: Abstraction has 9015 states and 13147 transitions. [2023-12-19 14:21:41,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 10 states have internal predecessors, (141), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:21:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 9015 states and 13147 transitions. [2023-12-19 14:21:41,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-12-19 14:21:41,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:21:41,984 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:41,994 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 14:21:42,204 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 14:21:42,204 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:21:42,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:21:42,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1714236998, now seen corresponding path program 1 times [2023-12-19 14:21:42,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:21:42,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778309971] [2023-12-19 14:21:42,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:42,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:21:42,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:21:42,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458700156] [2023-12-19 14:21:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:21:42,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:42,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:21:42,248 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 14:21:42,271 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 14:21:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:21:42,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-19 14:21:42,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:21:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 6480 proven. 414 refuted. 0 times theorem prover too weak. 2490 trivial. 0 not checked. [2023-12-19 14:21:45,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:21:50,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 531 proven. 267 refuted. 0 times theorem prover too weak. 8586 trivial. 0 not checked. [2023-12-19 14:21:50,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:21:50,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778309971] [2023-12-19 14:21:50,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:21:50,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458700156] [2023-12-19 14:21:50,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458700156] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:21:50,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:21:50,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27] total 48 [2023-12-19 14:21:50,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136197416] [2023-12-19 14:21:50,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:21:50,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-19 14:21:50,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:21:50,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-19 14:21:50,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1922, Unknown=0, NotChecked=0, Total=2256 [2023-12-19 14:21:50,131 INFO L87 Difference]: Start difference. First operand 9015 states and 13147 transitions. Second operand has 48 states, 48 states have (on average 6.166666666666667) internal successors, (296), 48 states have internal predecessors, (296), 10 states have call successors, (138), 6 states have call predecessors, (138), 14 states have return successors, (138), 10 states have call predecessors, (138), 10 states have call successors, (138) [2023-12-19 14:21:54,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 14:24:50,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:24:50,911 INFO L93 Difference]: Finished difference Result 166716 states and 236733 transitions. [2023-12-19 14:24:50,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 328 states. [2023-12-19 14:24:50,913 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.166666666666667) internal successors, (296), 48 states have internal predecessors, (296), 10 states have call successors, (138), 6 states have call predecessors, (138), 14 states have return successors, (138), 10 states have call predecessors, (138), 10 states have call successors, (138) Word has length 483 [2023-12-19 14:24:50,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:24:51,265 INFO L225 Difference]: With dead ends: 166716 [2023-12-19 14:24:51,266 INFO L226 Difference]: Without dead ends: 157928 [2023-12-19 14:24:51,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1342 GetRequests, 976 SyntacticMatches, 0 SemanticMatches, 366 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64098 ImplicationChecksByTransitivity, 118.5s TimeCoverageRelationStatistics Valid=25092, Invalid=109964, Unknown=0, NotChecked=0, Total=135056 [2023-12-19 14:24:51,326 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 17310 mSDsluCounter, 21994 mSDsCounter, 0 mSdLazyCounter, 23680 mSolverCounterSat, 6951 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17401 SdHoareTripleChecker+Valid, 22652 SdHoareTripleChecker+Invalid, 30631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 6951 IncrementalHoareTripleChecker+Valid, 23680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.7s IncrementalHoareTripleChecker+Time [2023-12-19 14:24:51,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17401 Valid, 22652 Invalid, 30631 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [6951 Valid, 23680 Invalid, 0 Unknown, 0 Unchecked, 46.7s Time] [2023-12-19 14:24:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157928 states. [2023-12-19 14:24:57,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157928 to 45666. [2023-12-19 14:24:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45666 states, 37735 states have (on average 1.3906717901152776) internal successors, (52477), 37879 states have internal predecessors, (52477), 6153 states have call successors, (6153), 1777 states have call predecessors, (6153), 1777 states have return successors, (6153), 6009 states have call predecessors, (6153), 6153 states have call successors, (6153) [2023-12-19 14:24:57,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45666 states to 45666 states and 64783 transitions. [2023-12-19 14:24:57,719 INFO L78 Accepts]: Start accepts. Automaton has 45666 states and 64783 transitions. Word has length 483 [2023-12-19 14:24:57,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:24:57,719 INFO L495 AbstractCegarLoop]: Abstraction has 45666 states and 64783 transitions. [2023-12-19 14:24:57,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.166666666666667) internal successors, (296), 48 states have internal predecessors, (296), 10 states have call successors, (138), 6 states have call predecessors, (138), 14 states have return successors, (138), 10 states have call predecessors, (138), 10 states have call successors, (138) [2023-12-19 14:24:57,720 INFO L276 IsEmpty]: Start isEmpty. Operand 45666 states and 64783 transitions. [2023-12-19 14:24:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-12-19 14:24:57,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:24:57,729 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:24:57,740 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 14:24:57,938 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 14:24:57,938 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:24:57,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:24:57,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2047594426, now seen corresponding path program 1 times [2023-12-19 14:24:57,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:24:57,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071297303] [2023-12-19 14:24:57,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:24:57,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:24:57,974 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:24:57,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011728967] [2023-12-19 14:24:57,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:24:57,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:24:57,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:24:57,976 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 14:24:57,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 14:24:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:24:58,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:24:58,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:24:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-19 14:24:58,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:24:58,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:24:58,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071297303] [2023-12-19 14:24:58,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:24:58,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011728967] [2023-12-19 14:24:58,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011728967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:24:58,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:24:58,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 14:24:58,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836926263] [2023-12-19 14:24:58,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:24:58,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:24:58,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:24:58,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:24:58,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:24:58,556 INFO L87 Difference]: Start difference. First operand 45666 states and 64783 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:25:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:25:03,483 INFO L93 Difference]: Finished difference Result 85743 states and 121477 transitions. [2023-12-19 14:25:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:25:03,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 484 [2023-12-19 14:25:03,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:25:03,559 INFO L225 Difference]: With dead ends: 85743 [2023-12-19 14:25:03,559 INFO L226 Difference]: Without dead ends: 42997 [2023-12-19 14:25:03,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:25:03,599 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 177 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:25:03,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1457 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:25:03,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42997 states. [2023-12-19 14:25:08,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42997 to 42997. [2023-12-19 14:25:08,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42997 states, 35288 states have (on average 1.3830197234187258) internal successors, (48804), 35426 states have internal predecessors, (48804), 5987 states have call successors, (5987), 1721 states have call predecessors, (5987), 1721 states have return successors, (5987), 5849 states have call predecessors, (5987), 5987 states have call successors, (5987) [2023-12-19 14:25:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42997 states to 42997 states and 60778 transitions. [2023-12-19 14:25:08,845 INFO L78 Accepts]: Start accepts. Automaton has 42997 states and 60778 transitions. Word has length 484 [2023-12-19 14:25:08,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:25:08,846 INFO L495 AbstractCegarLoop]: Abstraction has 42997 states and 60778 transitions. [2023-12-19 14:25:08,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:25:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 42997 states and 60778 transitions. [2023-12-19 14:25:08,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-12-19 14:25:08,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:25:08,852 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:25:08,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 14:25:09,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:25:09,060 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:25:09,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:25:09,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1820275758, now seen corresponding path program 1 times [2023-12-19 14:25:09,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:25:09,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597107447] [2023-12-19 14:25:09,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:25:09,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:25:09,098 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:25:09,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830198107] [2023-12-19 14:25:09,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:25:09,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:25:09,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:25:09,100 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:25:09,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 14:25:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:25:09,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 14:25:09,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:25:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 5286 proven. 240 refuted. 0 times theorem prover too weak. 3858 trivial. 0 not checked. [2023-12-19 14:25:10,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:25:11,133 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 72 proven. 132 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-12-19 14:25:11,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:25:11,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597107447] [2023-12-19 14:25:11,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:25:11,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830198107] [2023-12-19 14:25:11,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830198107] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:25:11,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:25:11,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-19 14:25:11,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120138594] [2023-12-19 14:25:11,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:25:11,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 14:25:11,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:25:11,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 14:25:11,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-12-19 14:25:11,142 INFO L87 Difference]: Start difference. First operand 42997 states and 60778 transitions. Second operand has 20 states, 20 states have (on average 12.2) internal successors, (244), 20 states have internal predecessors, (244), 5 states have call successors, (113), 3 states have call predecessors, (113), 6 states have return successors, (114), 5 states have call predecessors, (114), 5 states have call successors, (114) [2023-12-19 14:25:18,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:25:18,859 INFO L93 Difference]: Finished difference Result 97117 states and 137335 transitions. [2023-12-19 14:25:18,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-19 14:25:18,859 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.2) internal successors, (244), 20 states have internal predecessors, (244), 5 states have call successors, (113), 3 states have call predecessors, (113), 6 states have return successors, (114), 5 states have call predecessors, (114), 5 states have call successors, (114) Word has length 484 [2023-12-19 14:25:18,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:25:18,945 INFO L225 Difference]: With dead ends: 97117 [2023-12-19 14:25:18,945 INFO L226 Difference]: Without dead ends: 54538 [2023-12-19 14:25:18,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 951 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=1427, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 14:25:18,979 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 1299 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 890 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 890 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:25:18,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1300 Valid, 1863 Invalid, 2573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [890 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 14:25:19,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54538 states. [2023-12-19 14:25:24,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54538 to 44182. [2023-12-19 14:25:24,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44182 states, 36132 states have (on average 1.3691187866710948) internal successors, (49469), 36270 states have internal predecessors, (49469), 5987 states have call successors, (5987), 2062 states have call predecessors, (5987), 2062 states have return successors, (5987), 5849 states have call predecessors, (5987), 5987 states have call successors, (5987) [2023-12-19 14:25:24,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44182 states to 44182 states and 61443 transitions. [2023-12-19 14:25:24,574 INFO L78 Accepts]: Start accepts. Automaton has 44182 states and 61443 transitions. Word has length 484 [2023-12-19 14:25:24,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:25:24,575 INFO L495 AbstractCegarLoop]: Abstraction has 44182 states and 61443 transitions. [2023-12-19 14:25:24,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.2) internal successors, (244), 20 states have internal predecessors, (244), 5 states have call successors, (113), 3 states have call predecessors, (113), 6 states have return successors, (114), 5 states have call predecessors, (114), 5 states have call successors, (114) [2023-12-19 14:25:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 44182 states and 61443 transitions. [2023-12-19 14:25:24,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-12-19 14:25:24,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:25:24,595 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:25:24,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-19 14:25:24,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:25:24,796 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:25:24,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:25:24,796 INFO L85 PathProgramCache]: Analyzing trace with hash -318318268, now seen corresponding path program 1 times [2023-12-19 14:25:24,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:25:24,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949309651] [2023-12-19 14:25:24,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:25:24,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:25:24,887 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:25:24,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301718221] [2023-12-19 14:25:24,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:25:24,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:25:24,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:25:24,895 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:25:24,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 14:25:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:25:25,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-19 14:25:25,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:25:28,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 6646 proven. 114 refuted. 0 times theorem prover too weak. 2624 trivial. 0 not checked. [2023-12-19 14:25:28,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:25:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 327 proven. 78 refuted. 0 times theorem prover too weak. 8979 trivial. 0 not checked. [2023-12-19 14:25:34,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:25:34,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949309651] [2023-12-19 14:25:34,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:25:34,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301718221] [2023-12-19 14:25:34,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301718221] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:25:34,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:25:34,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 42 [2023-12-19 14:25:34,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244108894] [2023-12-19 14:25:34,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:25:34,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-19 14:25:34,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:25:34,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-19 14:25:34,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1491, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 14:25:34,786 INFO L87 Difference]: Start difference. First operand 44182 states and 61443 transitions. Second operand has 42 states, 41 states have (on average 6.7317073170731705) internal successors, (276), 40 states have internal predecessors, (276), 11 states have call successors, (138), 7 states have call predecessors, (138), 11 states have return successors, (138), 11 states have call predecessors, (138), 11 states have call successors, (138) [2023-12-19 14:25:40,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:25:46,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:25:54,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:26:00,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:26:09,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:26:25,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:26:39,429 WARN L293 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 201 DAG size of output: 187 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 14:26:44,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:27:04,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:27:16,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:27:21,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:27:31,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:27:36,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:28:21,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:29:21,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:29:21,068 INFO L93 Difference]: Finished difference Result 129185 states and 180164 transitions. [2023-12-19 14:29:21,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2023-12-19 14:29:21,069 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 6.7317073170731705) internal successors, (276), 40 states have internal predecessors, (276), 11 states have call successors, (138), 7 states have call predecessors, (138), 11 states have return successors, (138), 11 states have call predecessors, (138), 11 states have call successors, (138) Word has length 484 [2023-12-19 14:29:21,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:29:21,317 INFO L225 Difference]: With dead ends: 129185 [2023-12-19 14:29:21,318 INFO L226 Difference]: Without dead ends: 87256 [2023-12-19 14:29:21,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1200 GetRequests, 963 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25728 ImplicationChecksByTransitivity, 103.6s TimeCoverageRelationStatistics Valid=11278, Invalid=45603, Unknown=1, NotChecked=0, Total=56882 [2023-12-19 14:29:21,369 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 10815 mSDsluCounter, 13073 mSDsCounter, 0 mSdLazyCounter, 11839 mSolverCounterSat, 6851 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 104.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10877 SdHoareTripleChecker+Valid, 13565 SdHoareTripleChecker+Invalid, 18699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6851 IncrementalHoareTripleChecker+Valid, 11839 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:29:21,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10877 Valid, 13565 Invalid, 18699 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6851 Valid, 11839 Invalid, 9 Unknown, 0 Unchecked, 108.0s Time] [2023-12-19 14:29:21,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87256 states. [2023-12-19 14:29:28,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87256 to 35280. [2023-12-19 14:29:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35280 states, 28698 states have (on average 1.3584570353334726) internal successors, (38985), 28807 states have internal predecessors, (38985), 4839 states have call successors, (4839), 1742 states have call predecessors, (4839), 1742 states have return successors, (4839), 4730 states have call predecessors, (4839), 4839 states have call successors, (4839) [2023-12-19 14:29:28,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35280 states to 35280 states and 48663 transitions. [2023-12-19 14:29:28,814 INFO L78 Accepts]: Start accepts. Automaton has 35280 states and 48663 transitions. Word has length 484 [2023-12-19 14:29:28,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:29:28,815 INFO L495 AbstractCegarLoop]: Abstraction has 35280 states and 48663 transitions. [2023-12-19 14:29:28,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 6.7317073170731705) internal successors, (276), 40 states have internal predecessors, (276), 11 states have call successors, (138), 7 states have call predecessors, (138), 11 states have return successors, (138), 11 states have call predecessors, (138), 11 states have call successors, (138) [2023-12-19 14:29:28,815 INFO L276 IsEmpty]: Start isEmpty. Operand 35280 states and 48663 transitions. [2023-12-19 14:29:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-12-19 14:29:28,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:29:28,822 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:28,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-19 14:29:29,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-19 14:29:29,028 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:29:29,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:29:29,029 INFO L85 PathProgramCache]: Analyzing trace with hash 198489932, now seen corresponding path program 1 times [2023-12-19 14:29:29,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:29:29,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366934898] [2023-12-19 14:29:29,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:29:29,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:29:29,075 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:29:29,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922996866] [2023-12-19 14:29:29,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:29:29,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:29:29,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:29:29,076 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:29:29,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-19 14:29:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:29:29,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 14:29:29,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:29:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-19 14:29:30,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:29:30,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:29:30,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366934898] [2023-12-19 14:29:30,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:29:30,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922996866] [2023-12-19 14:29:30,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922996866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:29:30,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:29:30,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 14:29:30,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916104326] [2023-12-19 14:29:30,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:29:30,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 14:29:30,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:29:30,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 14:29:30,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 14:29:30,341 INFO L87 Difference]: Start difference. First operand 35280 states and 48663 transitions. Second operand has 12 states, 12 states have (on average 11.833333333333334) internal successors, (142), 12 states have internal predecessors, (142), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:29:53,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:29:53,304 INFO L93 Difference]: Finished difference Result 109448 states and 150107 transitions. [2023-12-19 14:29:53,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 14:29:53,305 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.833333333333334) internal successors, (142), 12 states have internal predecessors, (142), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 484 [2023-12-19 14:29:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:29:53,444 INFO L225 Difference]: With dead ends: 109448 [2023-12-19 14:29:53,444 INFO L226 Difference]: Without dead ends: 77933 [2023-12-19 14:29:53,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2023-12-19 14:29:53,482 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 2172 mSDsluCounter, 3406 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 1364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 4242 SdHoareTripleChecker+Invalid, 3511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1364 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-19 14:29:53,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 4242 Invalid, 3511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1364 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-19 14:29:53,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77933 states. [2023-12-19 14:30:02,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77933 to 45846. [2023-12-19 14:30:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45846 states, 38230 states have (on average 1.3737379021710698) internal successors, (52518), 38365 states have internal predecessors, (52518), 5583 states have call successors, (5583), 2032 states have call predecessors, (5583), 2032 states have return successors, (5583), 5448 states have call predecessors, (5583), 5583 states have call successors, (5583) [2023-12-19 14:30:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45846 states to 45846 states and 63684 transitions. [2023-12-19 14:30:03,094 INFO L78 Accepts]: Start accepts. Automaton has 45846 states and 63684 transitions. Word has length 484 [2023-12-19 14:30:03,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:30:03,095 INFO L495 AbstractCegarLoop]: Abstraction has 45846 states and 63684 transitions. [2023-12-19 14:30:03,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.833333333333334) internal successors, (142), 12 states have internal predecessors, (142), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-19 14:30:03,095 INFO L276 IsEmpty]: Start isEmpty. Operand 45846 states and 63684 transitions. [2023-12-19 14:30:03,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-12-19 14:30:03,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:30:03,103 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:30:03,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-19 14:30:03,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 14:30:03,312 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:30:03,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:30:03,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1881716012, now seen corresponding path program 1 times [2023-12-19 14:30:03,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:30:03,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979648198] [2023-12-19 14:30:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:30:03,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:30:03,349 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:30:03,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919178322] [2023-12-19 14:30:03,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:30:03,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:30:03,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:30:03,351 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:30:03,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-19 14:30:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:30:04,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-19 14:30:04,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:30:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 5528 proven. 513 refuted. 0 times theorem prover too weak. 3343 trivial. 0 not checked. [2023-12-19 14:30:07,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:30:09,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:30:09,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979648198] [2023-12-19 14:30:09,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:30:09,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919178322] [2023-12-19 14:30:09,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919178322] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 14:30:09,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 14:30:09,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-12-19 14:30:09,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747022702] [2023-12-19 14:30:09,609 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 14:30:09,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 14:30:09,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:30:09,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 14:30:09,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 14:30:09,610 INFO L87 Difference]: Start difference. First operand 45846 states and 63684 transitions. Second operand has 24 states, 24 states have (on average 6.791666666666667) internal successors, (163), 21 states have internal predecessors, (163), 6 states have call successors, (69), 6 states have call predecessors, (69), 8 states have return successors, (69), 6 states have call predecessors, (69), 6 states have call successors, (69) [2023-12-19 14:30:46,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:30:46,970 INFO L93 Difference]: Finished difference Result 183742 states and 250163 transitions. [2023-12-19 14:30:46,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-19 14:30:46,971 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.791666666666667) internal successors, (163), 21 states have internal predecessors, (163), 6 states have call successors, (69), 6 states have call predecessors, (69), 8 states have return successors, (69), 6 states have call predecessors, (69), 6 states have call successors, (69) Word has length 484 [2023-12-19 14:30:46,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:30:47,345 INFO L225 Difference]: With dead ends: 183742 [2023-12-19 14:30:47,345 INFO L226 Difference]: Without dead ends: 142828 [2023-12-19 14:30:47,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1538 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1525, Invalid=4795, Unknown=0, NotChecked=0, Total=6320 [2023-12-19 14:30:47,396 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 3292 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 4488 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3328 SdHoareTripleChecker+Valid, 4040 SdHoareTripleChecker+Invalid, 5121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 4488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:30:47,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3328 Valid, 4040 Invalid, 5121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 4488 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 14:30:47,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142828 states. [2023-12-19 14:31:08,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142828 to 110020. [2023-12-19 14:31:08,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110020 states, 94184 states have (on average 1.3788753928480422) internal successors, (129868), 94610 states have internal predecessors, (129868), 11301 states have call successors, (11301), 4534 states have call predecessors, (11301), 4534 states have return successors, (11301), 10875 states have call predecessors, (11301), 11301 states have call successors, (11301) [2023-12-19 14:31:08,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110020 states to 110020 states and 152470 transitions. [2023-12-19 14:31:08,930 INFO L78 Accepts]: Start accepts. Automaton has 110020 states and 152470 transitions. Word has length 484 [2023-12-19 14:31:08,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:31:08,930 INFO L495 AbstractCegarLoop]: Abstraction has 110020 states and 152470 transitions. [2023-12-19 14:31:08,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.791666666666667) internal successors, (163), 21 states have internal predecessors, (163), 6 states have call successors, (69), 6 states have call predecessors, (69), 8 states have return successors, (69), 6 states have call predecessors, (69), 6 states have call successors, (69) [2023-12-19 14:31:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 110020 states and 152470 transitions. [2023-12-19 14:31:08,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-12-19 14:31:08,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:31:08,947 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:31:08,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-19 14:31:09,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 14:31:09,156 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:31:09,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:31:09,157 INFO L85 PathProgramCache]: Analyzing trace with hash 419106578, now seen corresponding path program 1 times [2023-12-19 14:31:09,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:31:09,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704405265] [2023-12-19 14:31:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:31:09,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:31:09,191 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:31:09,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785602871] [2023-12-19 14:31:09,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:31:09,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:31:09,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:31:09,192 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:31:09,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-19 14:31:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:31:09,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-19 14:31:09,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:31:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 5949 proven. 321 refuted. 0 times theorem prover too weak. 3114 trivial. 0 not checked. [2023-12-19 14:31:13,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:31:21,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:31:21,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704405265] [2023-12-19 14:31:21,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:31:21,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785602871] [2023-12-19 14:31:21,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785602871] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 14:31:21,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 14:31:21,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-12-19 14:31:21,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417916570] [2023-12-19 14:31:21,932 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 14:31:21,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 14:31:21,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:31:21,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 14:31:21,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1138, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 14:31:21,934 INFO L87 Difference]: Start difference. First operand 110020 states and 152470 transitions. Second operand has 20 states, 20 states have (on average 7.7) internal successors, (154), 19 states have internal predecessors, (154), 3 states have call successors, (69), 3 states have call predecessors, (69), 5 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2023-12-19 14:32:01,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:32:01,315 INFO L93 Difference]: Finished difference Result 183916 states and 253946 transitions. [2023-12-19 14:32:01,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-19 14:32:01,316 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.7) internal successors, (154), 19 states have internal predecessors, (154), 3 states have call successors, (69), 3 states have call predecessors, (69), 5 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) Word has length 484 [2023-12-19 14:32:01,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:32:01,660 INFO L225 Difference]: With dead ends: 183916 [2023-12-19 14:32:01,660 INFO L226 Difference]: Without dead ends: 139455 [2023-12-19 14:32:01,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2858 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=2263, Invalid=8657, Unknown=0, NotChecked=0, Total=10920 [2023-12-19 14:32:01,710 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 3317 mSDsluCounter, 5768 mSDsCounter, 0 mSdLazyCounter, 7510 mSolverCounterSat, 940 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3363 SdHoareTripleChecker+Valid, 6440 SdHoareTripleChecker+Invalid, 8450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 940 IncrementalHoareTripleChecker+Valid, 7510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:32:01,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3363 Valid, 6440 Invalid, 8450 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [940 Valid, 7510 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-19 14:32:01,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139455 states. [2023-12-19 14:32:23,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139455 to 111346. [2023-12-19 14:32:23,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111346 states, 95510 states have (on average 1.3809653439430427) internal successors, (131896), 95936 states have internal predecessors, (131896), 11301 states have call successors, (11301), 4534 states have call predecessors, (11301), 4534 states have return successors, (11301), 10875 states have call predecessors, (11301), 11301 states have call successors, (11301) [2023-12-19 14:32:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111346 states to 111346 states and 154498 transitions. [2023-12-19 14:32:23,265 INFO L78 Accepts]: Start accepts. Automaton has 111346 states and 154498 transitions. Word has length 484 [2023-12-19 14:32:23,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:32:23,265 INFO L495 AbstractCegarLoop]: Abstraction has 111346 states and 154498 transitions. [2023-12-19 14:32:23,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.7) internal successors, (154), 19 states have internal predecessors, (154), 3 states have call successors, (69), 3 states have call predecessors, (69), 5 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2023-12-19 14:32:23,265 INFO L276 IsEmpty]: Start isEmpty. Operand 111346 states and 154498 transitions. [2023-12-19 14:32:23,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-12-19 14:32:23,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:32:23,281 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:32:23,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-19 14:32:23,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 14:32:23,489 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:32:23,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:32:23,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1364907812, now seen corresponding path program 1 times [2023-12-19 14:32:23,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:32:23,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133290124] [2023-12-19 14:32:23,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:32:23,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:32:23,524 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:32:23,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78189797] [2023-12-19 14:32:23,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:32:23,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:32:23,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:32:23,525 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:32:23,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-19 14:32:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:32:24,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-19 14:32:24,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:32:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4793 proven. 513 refuted. 0 times theorem prover too weak. 4078 trivial. 0 not checked. [2023-12-19 14:32:27,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:32:28,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:32:28,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133290124] [2023-12-19 14:32:28,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:32:28,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78189797] [2023-12-19 14:32:28,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78189797] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 14:32:28,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 14:32:28,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-12-19 14:32:28,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731432037] [2023-12-19 14:32:28,381 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 14:32:28,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 14:32:28,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:32:28,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 14:32:28,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2023-12-19 14:32:28,383 INFO L87 Difference]: Start difference. First operand 111346 states and 154498 transitions. Second operand has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 15 states have internal predecessors, (157), 5 states have call successors, (69), 5 states have call predecessors, (69), 6 states have return successors, (69), 5 states have call predecessors, (69), 5 states have call successors, (69) [2023-12-19 14:33:13,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:33:13,288 INFO L93 Difference]: Finished difference Result 306394 states and 423375 transitions. [2023-12-19 14:33:13,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-19 14:33:13,289 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 15 states have internal predecessors, (157), 5 states have call successors, (69), 5 states have call predecessors, (69), 6 states have return successors, (69), 5 states have call predecessors, (69), 5 states have call successors, (69) Word has length 484 [2023-12-19 14:33:13,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:33:13,896 INFO L225 Difference]: With dead ends: 306394 [2023-12-19 14:33:13,896 INFO L226 Difference]: Without dead ends: 205166 [2023-12-19 14:33:14,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=890, Invalid=2532, Unknown=0, NotChecked=0, Total=3422 [2023-12-19 14:33:14,133 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 2452 mSDsluCounter, 5774 mSDsCounter, 0 mSdLazyCounter, 3017 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 6475 SdHoareTripleChecker+Invalid, 3511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 3017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 14:33:14,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 6475 Invalid, 3511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 3017 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 14:33:14,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205166 states. [2023-12-19 14:33:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205166 to 202668. [2023-12-19 14:33:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202668 states, 173109 states have (on average 1.3717657660780203) internal successors, (237465), 173869 states have internal predecessors, (237465), 21128 states have call successors, (21128), 8430 states have call predecessors, (21128), 8430 states have return successors, (21128), 20368 states have call predecessors, (21128), 21128 states have call successors, (21128) [2023-12-19 14:33:55,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202668 states to 202668 states and 279721 transitions. [2023-12-19 14:33:55,303 INFO L78 Accepts]: Start accepts. Automaton has 202668 states and 279721 transitions. Word has length 484 [2023-12-19 14:33:55,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:33:55,304 INFO L495 AbstractCegarLoop]: Abstraction has 202668 states and 279721 transitions. [2023-12-19 14:33:55,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 15 states have internal predecessors, (157), 5 states have call successors, (69), 5 states have call predecessors, (69), 6 states have return successors, (69), 5 states have call predecessors, (69), 5 states have call successors, (69) [2023-12-19 14:33:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 202668 states and 279721 transitions. [2023-12-19 14:33:55,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-12-19 14:33:55,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:33:55,322 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:55,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-19 14:33:55,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 14:33:55,524 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:33:55,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:33:55,525 INFO L85 PathProgramCache]: Analyzing trace with hash 935914778, now seen corresponding path program 1 times [2023-12-19 14:33:55,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:33:55,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439822692] [2023-12-19 14:33:55,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:33:55,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:33:55,680 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:33:55,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739957380] [2023-12-19 14:33:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:33:55,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:33:55,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:33:55,681 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:33:55,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-19 14:33:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:33:56,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-19 14:33:56,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:33:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 6746 proven. 372 refuted. 0 times theorem prover too weak. 2266 trivial. 0 not checked. [2023-12-19 14:33:59,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:34:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 192 proven. 213 refuted. 0 times theorem prover too weak. 8979 trivial. 0 not checked. [2023-12-19 14:34:03,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:34:03,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439822692] [2023-12-19 14:34:03,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:34:03,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739957380] [2023-12-19 14:34:03,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739957380] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:34:03,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:34:03,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 28 [2023-12-19 14:34:03,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976147788] [2023-12-19 14:34:03,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:34:03,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 14:34:03,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:34:03,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 14:34:03,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2023-12-19 14:34:03,177 INFO L87 Difference]: Start difference. First operand 202668 states and 279721 transitions. Second operand has 28 states, 28 states have (on average 9.535714285714286) internal successors, (267), 28 states have internal predecessors, (267), 9 states have call successors, (138), 6 states have call predecessors, (138), 11 states have return successors, (138), 9 states have call predecessors, (138), 9 states have call successors, (138) Received shutdown request... [2023-12-19 14:34:58,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-12-19 14:34:58,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1067 GetRequests, 949 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5076 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3094, Invalid=11186, Unknown=0, NotChecked=0, Total=14280 [2023-12-19 14:34:58,087 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 1840 mSDsluCounter, 5052 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1851 SdHoareTripleChecker+Valid, 5729 SdHoareTripleChecker+Invalid, 3636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 14:34:58,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1851 Valid, 5729 Invalid, 3636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 14:34:58,088 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 14:34:58,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-19 14:34:58,118 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 14:34:58,118 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 14:34:58,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:34:58,297 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (202668states) and FLOYD_HOARE automaton (currently 99 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (484442 states constructed, input type IntersectNwa). [2023-12-19 14:34:58,300 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:34:58,302 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 14:34:58,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 02:34:58 BoogieIcfgContainer [2023-12-19 14:34:58,305 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 14:34:58,306 INFO L158 Benchmark]: Toolchain (without parser) took 837218.73ms. Allocated memory was 235.9MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 186.3MB in the beginning and 740.1MB in the end (delta: -553.8MB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2023-12-19 14:34:58,307 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 170.9MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 14:34:58,307 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.82ms. Allocated memory is still 235.9MB. Free memory was 186.3MB in the beginning and 148.5MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-19 14:34:58,307 INFO L158 Benchmark]: Boogie Procedure Inliner took 107.49ms. Allocated memory is still 235.9MB. Free memory was 148.5MB in the beginning and 129.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-19 14:34:58,308 INFO L158 Benchmark]: Boogie Preprocessor took 154.98ms. Allocated memory is still 235.9MB. Free memory was 129.7MB in the beginning and 88.9MB in the end (delta: 40.8MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-19 14:34:58,308 INFO L158 Benchmark]: RCFGBuilder took 1075.63ms. Allocated memory is still 235.9MB. Free memory was 88.9MB in the beginning and 106.0MB in the end (delta: -17.1MB). Peak memory consumption was 34.2MB. Max. memory is 8.0GB. [2023-12-19 14:34:58,308 INFO L158 Benchmark]: TraceAbstraction took 835445.12ms. Allocated memory was 235.9MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 105.4MB in the beginning and 740.1MB in the end (delta: -634.6MB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. [2023-12-19 14:34:58,308 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 170.9MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 430.82ms. Allocated memory is still 235.9MB. Free memory was 186.3MB in the beginning and 148.5MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 107.49ms. Allocated memory is still 235.9MB. Free memory was 148.5MB in the beginning and 129.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 154.98ms. Allocated memory is still 235.9MB. Free memory was 129.7MB in the beginning and 88.9MB in the end (delta: 40.8MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * RCFGBuilder took 1075.63ms. Allocated memory is still 235.9MB. Free memory was 88.9MB in the beginning and 106.0MB in the end (delta: -17.1MB). Peak memory consumption was 34.2MB. Max. memory is 8.0GB. * TraceAbstraction took 835445.12ms. Allocated memory was 235.9MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 105.4MB in the beginning and 740.1MB in the end (delta: -634.6MB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (202668states) and FLOYD_HOARE automaton (currently 99 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (484442 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 289 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 835.4s, OverallIterations: 30, TraceHistogramMax: 69, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 635.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 68856 SdHoareTripleChecker+Valid, 185.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68399 mSDsluCounter, 106014 SdHoareTripleChecker+Invalid, 173.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 88152 mSDsCounter, 21933 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69251 IncrementalHoareTripleChecker+Invalid, 91193 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21933 mSolverCounterUnsat, 17862 mSDtfsCounter, 69251 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21090 GetRequests, 19866 SyntacticMatches, 4 SemanticMatches, 1220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101773 ImplicationChecksByTransitivity, 245.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202668occurred in iteration=29, InterpolantAutomatonStates: 965, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 120.9s AutomataMinimizationTime, 29 MinimizatonAttempts, 287157 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.8s SsaConstructionTime, 6.1s SatisfiabilityAnalysisTime, 57.2s InterpolantComputationTime, 14932 NumberOfCodeBlocks, 14932 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 19238 ConstructedInterpolants, 6 QuantifiedInterpolants, 114282 SizeOfPredicates, 201 NumberOfNonLiveVariables, 36557 ConjunctsInSsa, 470 ConjunctsInUnsatCore, 40 InterpolantComputations, 17 PerfectInterpolantSequences, 370413/375360 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