/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-9.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:12:42,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:12:43,053 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:12:43,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:12:43,057 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:12:43,079 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:12:43,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:12:43,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:12:43,083 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:12:43,087 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:12:43,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:12:43,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:12:43,089 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:12:43,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:12:43,090 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:12:43,090 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:12:43,091 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:12:43,091 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:12:43,091 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:12:43,091 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:12:43,091 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:12:43,093 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:12:43,094 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:12:43,094 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:12:43,094 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:12:43,094 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:12:43,094 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:12:43,095 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:12:43,095 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:12:43,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:12:43,096 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:12:43,097 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:12:43,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:12:43,097 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:12:43,097 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:12:43,097 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:12:43,097 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:12:43,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:12:43,098 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:12:43,098 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:12:43,098 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:12:43,098 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:12:43,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:12:43,099 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:12:43,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:12:43,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:12:43,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:12:43,364 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:12:43,365 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:12:43,366 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-9.i [2023-12-16 04:12:44,553 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:12:44,827 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:12:44,828 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-9.i [2023-12-16 04:12:44,843 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc166f5a3/579c9df2c2d943f6a0a5622c1133a5d5/FLAGa158a563e [2023-12-16 04:12:44,853 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc166f5a3/579c9df2c2d943f6a0a5622c1133a5d5 [2023-12-16 04:12:44,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:12:44,856 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:12:44,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:12:44,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:12:44,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:12:44,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:12:44" (1/1) ... [2023-12-16 04:12:44,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45061a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:12:44, skipping insertion in model container [2023-12-16 04:12:44,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:12:44" (1/1) ... [2023-12-16 04:12:44,930 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:12:45,054 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-9.i[915,928] [2023-12-16 04:12:45,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:12:45,327 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:12:45,340 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-9.i[915,928] [2023-12-16 04:12:45,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:12:45,466 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:12:45,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:12:45 WrapperNode [2023-12-16 04:12:45,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:12:45,471 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:12:45,471 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:12:45,471 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:12:45,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:12:45" (1/1) ... [2023-12-16 04:12:45,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:12:45" (1/1) ... [2023-12-16 04:12:45,586 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 735 [2023-12-16 04:12:45,587 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:12:45,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:12:45,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:12:45,588 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:12:45,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:12:45" (1/1) ... [2023-12-16 04:12:45,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:12:45" (1/1) ... [2023-12-16 04:12:45,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:12:45" (1/1) ... [2023-12-16 04:12:45,697 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 04:12:45,697 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:12:45" (1/1) ... [2023-12-16 04:12:45,698 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:12:45" (1/1) ... [2023-12-16 04:12:45,732 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:12:45" (1/1) ... [2023-12-16 04:12:45,748 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:12:45" (1/1) ... [2023-12-16 04:12:45,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:12:45" (1/1) ... [2023-12-16 04:12:45,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:12:45" (1/1) ... [2023-12-16 04:12:45,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:12:45,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:12:45,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:12:45,771 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:12:45,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:12:45" (1/1) ... [2023-12-16 04:12:45,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:12:45,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:12:45,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 04:12:45,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 04:12:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:12:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:12:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:12:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:12:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:12:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:12:45,967 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:12:45,969 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:12:46,906 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:12:46,960 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:12:46,960 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:12:46,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:12:46 BoogieIcfgContainer [2023-12-16 04:12:46,961 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:12:46,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:12:46,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:12:46,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:12:46,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:12:44" (1/3) ... [2023-12-16 04:12:46,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c530974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:12:46, skipping insertion in model container [2023-12-16 04:12:46,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:12:45" (2/3) ... [2023-12-16 04:12:46,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c530974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:12:46, skipping insertion in model container [2023-12-16 04:12:46,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:12:46" (3/3) ... [2023-12-16 04:12:46,971 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-9.i [2023-12-16 04:12:46,987 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:12:46,987 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:12:47,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:12:47,045 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;@69cd8325, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:12:47,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:12:47,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 269 states, 186 states have (on average 1.521505376344086) internal successors, (283), 187 states have internal predecessors, (283), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-16 04:12:47,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-16 04:12:47,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:12:47,084 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:12:47,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:12:47,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:12:47,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1503485810, now seen corresponding path program 1 times [2023-12-16 04:12:47,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:12:47,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639734683] [2023-12-16 04:12:47,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:12:47,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:12:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:12:47,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:12:47,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639734683] [2023-12-16 04:12:47,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 04:12:47,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726103988] [2023-12-16 04:12:47,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:12:47,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:12:47,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:12:47,529 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:12:47,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:12:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:12:47,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 04:12:47,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:12:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2023-12-16 04:12:48,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:12:48,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726103988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:12:48,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:12:48,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:12:48,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213982809] [2023-12-16 04:12:48,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:12:48,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:12:48,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:12:48,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:12:48,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:12:48,122 INFO L87 Difference]: Start difference. First operand has 269 states, 186 states have (on average 1.521505376344086) internal successors, (283), 187 states have internal predecessors, (283), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-16 04:12:48,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:12:48,187 INFO L93 Difference]: Finished difference Result 535 states and 964 transitions. [2023-12-16 04:12:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:12:48,189 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) Word has length 542 [2023-12-16 04:12:48,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:12:48,198 INFO L225 Difference]: With dead ends: 535 [2023-12-16 04:12:48,198 INFO L226 Difference]: Without dead ends: 267 [2023-12-16 04:12:48,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:12:48,206 INFO L413 NwaCegarLoop]: 435 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, 435 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:12:48,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 435 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:12:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-12-16 04:12:48,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2023-12-16 04:12:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 185 states have (on average 1.5027027027027027) internal successors, (278), 185 states have internal predecessors, (278), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-16 04:12:48,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 438 transitions. [2023-12-16 04:12:48,299 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 438 transitions. Word has length 542 [2023-12-16 04:12:48,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:12:48,300 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 438 transitions. [2023-12-16 04:12:48,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-16 04:12:48,301 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 438 transitions. [2023-12-16 04:12:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-16 04:12:48,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:12:48,319 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:12:48,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:12:48,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-16 04:12:48,532 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:12:48,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:12:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2057130594, now seen corresponding path program 1 times [2023-12-16 04:12:48,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:12:48,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122878890] [2023-12-16 04:12:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:12:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:12:48,649 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:12:48,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984544996] [2023-12-16 04:12:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:12:48,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:12:48,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:12:48,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:12:48,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:12:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:12:49,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:12:49,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:12:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-16 04:12:49,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:12:49,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:12:49,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122878890] [2023-12-16 04:12:49,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:12:49,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984544996] [2023-12-16 04:12:49,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984544996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:12:49,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:12:49,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:12:49,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590792382] [2023-12-16 04:12:49,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:12:49,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:12:49,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:12:49,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:12:49,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:12:49,225 INFO L87 Difference]: Start difference. First operand 267 states and 438 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:12:49,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:12:49,334 INFO L93 Difference]: Finished difference Result 557 states and 910 transitions. [2023-12-16 04:12:49,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:12:49,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 542 [2023-12-16 04:12:49,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:12:49,346 INFO L225 Difference]: With dead ends: 557 [2023-12-16 04:12:49,346 INFO L226 Difference]: Without dead ends: 291 [2023-12-16 04:12:49,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:12:49,352 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 48 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:12:49,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1305 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:12:49,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-12-16 04:12:49,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 269. [2023-12-16 04:12:49,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 187 states have (on average 1.4973262032085561) internal successors, (280), 187 states have internal predecessors, (280), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-16 04:12:49,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 440 transitions. [2023-12-16 04:12:49,392 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 440 transitions. Word has length 542 [2023-12-16 04:12:49,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:12:49,394 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 440 transitions. [2023-12-16 04:12:49,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:12:49,395 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 440 transitions. [2023-12-16 04:12:49,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-16 04:12:49,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:12:49,400 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:12:49,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:12:49,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-16 04:12:49,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:12:49,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:12:49,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1844809692, now seen corresponding path program 1 times [2023-12-16 04:12:49,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:12:49,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143822814] [2023-12-16 04:12:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:12:49,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:12:49,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:12:49,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135528101] [2023-12-16 04:12:49,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:12:49,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:12:49,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:12:49,745 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:12:49,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:12:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:12:50,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:12:50,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:12:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-16 04:12:55,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:12:55,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:12:55,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143822814] [2023-12-16 04:12:55,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:12:55,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135528101] [2023-12-16 04:12:55,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135528101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:12:55,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:12:55,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:12:55,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017258756] [2023-12-16 04:12:55,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:12:55,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:12:55,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:12:55,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:12:55,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:12:55,289 INFO L87 Difference]: Start difference. First operand 269 states and 440 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:12:55,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:12:55,401 INFO L93 Difference]: Finished difference Result 549 states and 896 transitions. [2023-12-16 04:12:55,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:12:55,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 542 [2023-12-16 04:12:55,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:12:55,407 INFO L225 Difference]: With dead ends: 549 [2023-12-16 04:12:55,407 INFO L226 Difference]: Without dead ends: 281 [2023-12-16 04:12:55,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:12:55,411 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 21 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:12:55,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1296 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:12:55,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-16 04:12:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 271. [2023-12-16 04:12:55,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 189 states have (on average 1.492063492063492) internal successors, (282), 189 states have internal predecessors, (282), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-16 04:12:55,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 442 transitions. [2023-12-16 04:12:55,440 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 442 transitions. Word has length 542 [2023-12-16 04:12:55,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:12:55,444 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 442 transitions. [2023-12-16 04:12:55,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:12:55,445 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 442 transitions. [2023-12-16 04:12:55,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-16 04:12:55,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:12:55,452 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:12:55,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 04:12:55,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:12:55,662 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:12:55,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:12:55,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1902067994, now seen corresponding path program 1 times [2023-12-16 04:12:55,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:12:55,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195028086] [2023-12-16 04:12:55,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:12:55,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:12:55,753 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:12:55,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255546426] [2023-12-16 04:12:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:12:55,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:12:55,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:12:55,756 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:12:55,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 04:12:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:12:56,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:12:56,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:12:56,287 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-16 04:12:56,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:12:56,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:12:56,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195028086] [2023-12-16 04:12:56,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:12:56,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255546426] [2023-12-16 04:12:56,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255546426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:12:56,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:12:56,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:12:56,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9786330] [2023-12-16 04:12:56,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:12:56,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:12:56,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:12:56,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:12:56,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:12:56,292 INFO L87 Difference]: Start difference. First operand 271 states and 442 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:12:56,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:12:56,406 INFO L93 Difference]: Finished difference Result 685 states and 1119 transitions. [2023-12-16 04:12:56,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:12:56,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 542 [2023-12-16 04:12:56,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:12:56,412 INFO L225 Difference]: With dead ends: 685 [2023-12-16 04:12:56,413 INFO L226 Difference]: Without dead ends: 415 [2023-12-16 04:12:56,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:12:56,417 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 503 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:12:56,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 1091 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:12:56,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-16 04:12:56,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 412. [2023-12-16 04:12:56,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 313 states have (on average 1.5431309904153354) internal successors, (483), 314 states have internal predecessors, (483), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 95 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-16 04:12:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 675 transitions. [2023-12-16 04:12:56,459 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 675 transitions. Word has length 542 [2023-12-16 04:12:56,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:12:56,462 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 675 transitions. [2023-12-16 04:12:56,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:12:56,463 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 675 transitions. [2023-12-16 04:12:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-16 04:12:56,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:12:56,469 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:12:56,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 04:12:56,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:12:56,680 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:12:56,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:12:56,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1789741028, now seen corresponding path program 1 times [2023-12-16 04:12:56,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:12:56,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361895545] [2023-12-16 04:12:56,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:12:56,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:12:56,763 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:12:56,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546900570] [2023-12-16 04:12:56,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:12:56,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:12:56,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:12:56,765 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:12:56,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 04:12:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:12:57,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:12:57,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:12:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-16 04:12:57,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:12:57,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:12:57,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361895545] [2023-12-16 04:12:57,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:12:57,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546900570] [2023-12-16 04:12:57,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546900570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:12:57,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:12:57,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:12:57,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321854110] [2023-12-16 04:12:57,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:12:57,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:12:57,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:12:57,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:12:57,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:12:57,230 INFO L87 Difference]: Start difference. First operand 412 states and 675 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:12:57,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:12:57,318 INFO L93 Difference]: Finished difference Result 1231 states and 2017 transitions. [2023-12-16 04:12:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:12:57,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 542 [2023-12-16 04:12:57,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:12:57,325 INFO L225 Difference]: With dead ends: 1231 [2023-12-16 04:12:57,325 INFO L226 Difference]: Without dead ends: 820 [2023-12-16 04:12:57,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:12:57,327 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 410 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:12:57,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 848 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:12:57,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2023-12-16 04:12:57,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 818. [2023-12-16 04:12:57,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 621 states have (on average 1.5281803542673107) internal successors, (949), 623 states have internal predecessors, (949), 192 states have call successors, (192), 4 states have call predecessors, (192), 4 states have return successors, (192), 190 states have call predecessors, (192), 192 states have call successors, (192) [2023-12-16 04:12:57,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1333 transitions. [2023-12-16 04:12:57,461 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1333 transitions. Word has length 542 [2023-12-16 04:12:57,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:12:57,463 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1333 transitions. [2023-12-16 04:12:57,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:12:57,464 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1333 transitions. [2023-12-16 04:12:57,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-12-16 04:12:57,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:12:57,469 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:12:57,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 04:12:57,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:12:57,682 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:12:57,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:12:57,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2078324434, now seen corresponding path program 1 times [2023-12-16 04:12:57,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:12:57,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625320520] [2023-12-16 04:12:57,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:12:57,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:12:57,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:12:57,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873930879] [2023-12-16 04:12:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:12:57,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:12:57,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:12:57,776 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:12:57,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 04:12:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:12:58,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 04:12:58,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:12:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-16 04:12:58,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:12:58,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:12:58,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625320520] [2023-12-16 04:12:58,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:12:58,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873930879] [2023-12-16 04:12:58,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873930879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:12:58,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:12:58,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:12:58,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137936172] [2023-12-16 04:12:58,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:12:58,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:12:58,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:12:58,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:12:58,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:12:58,969 INFO L87 Difference]: Start difference. First operand 818 states and 1333 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:12:59,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:12:59,433 INFO L93 Difference]: Finished difference Result 2846 states and 4630 transitions. [2023-12-16 04:12:59,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:12:59,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 543 [2023-12-16 04:12:59,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:12:59,444 INFO L225 Difference]: With dead ends: 2846 [2023-12-16 04:12:59,445 INFO L226 Difference]: Without dead ends: 2029 [2023-12-16 04:12:59,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:12:59,448 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 300 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:12:59,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1461 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:12:59,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2023-12-16 04:12:59,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1997. [2023-12-16 04:12:59,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1568 states have (on average 1.5369897959183674) internal successors, (2410), 1576 states have internal predecessors, (2410), 416 states have call successors, (416), 12 states have call predecessors, (416), 12 states have return successors, (416), 408 states have call predecessors, (416), 416 states have call successors, (416) [2023-12-16 04:12:59,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 3242 transitions. [2023-12-16 04:12:59,589 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 3242 transitions. Word has length 543 [2023-12-16 04:12:59,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:12:59,590 INFO L495 AbstractCegarLoop]: Abstraction has 1997 states and 3242 transitions. [2023-12-16 04:12:59,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:12:59,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 3242 transitions. [2023-12-16 04:12:59,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-12-16 04:12:59,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:12:59,596 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:12:59,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 04:12:59,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:12:59,806 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:12:59,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:12:59,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1195574508, now seen corresponding path program 1 times [2023-12-16 04:12:59,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:12:59,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323316216] [2023-12-16 04:12:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:12:59,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:12:59,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:12:59,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946693238] [2023-12-16 04:12:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:12:59,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:12:59,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:12:59,883 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:12:59,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 04:13:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:00,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:13:00,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-16 04:13:00,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:00,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:00,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323316216] [2023-12-16 04:13:00,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:00,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946693238] [2023-12-16 04:13:00,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946693238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:00,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:00,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:13:00,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480930477] [2023-12-16 04:13:00,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:00,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:13:00,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:00,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:13:00,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:13:00,363 INFO L87 Difference]: Start difference. First operand 1997 states and 3242 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:13:00,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:00,524 INFO L93 Difference]: Finished difference Result 5965 states and 9684 transitions. [2023-12-16 04:13:00,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:13:00,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 543 [2023-12-16 04:13:00,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:00,550 INFO L225 Difference]: With dead ends: 5965 [2023-12-16 04:13:00,552 INFO L226 Difference]: Without dead ends: 3969 [2023-12-16 04:13:00,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:13:00,561 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 418 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:00,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 851 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:13:00,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2023-12-16 04:13:00,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 3017. [2023-12-16 04:13:00,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 2588 states have (on average 1.5795981452859351) internal successors, (4088), 2596 states have internal predecessors, (4088), 416 states have call successors, (416), 12 states have call predecessors, (416), 12 states have return successors, (416), 408 states have call predecessors, (416), 416 states have call successors, (416) [2023-12-16 04:13:00,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 4920 transitions. [2023-12-16 04:13:00,840 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 4920 transitions. Word has length 543 [2023-12-16 04:13:00,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:00,840 INFO L495 AbstractCegarLoop]: Abstraction has 3017 states and 4920 transitions. [2023-12-16 04:13:00,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:13:00,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 4920 transitions. [2023-12-16 04:13:00,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-12-16 04:13:00,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:00,848 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:00,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:01,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:01,066 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:01,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:01,067 INFO L85 PathProgramCache]: Analyzing trace with hash -716330068, now seen corresponding path program 1 times [2023-12-16 04:13:01,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:01,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261661453] [2023-12-16 04:13:01,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:01,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:01,129 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:01,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164265667] [2023-12-16 04:13:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:01,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:01,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:01,131 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:13:01,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 04:13:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:01,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:13:01,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6387 proven. 123 refuted. 0 times theorem prover too weak. 6130 trivial. 0 not checked. [2023-12-16 04:13:01,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:13:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 114 proven. 123 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-16 04:13:02,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:02,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261661453] [2023-12-16 04:13:02,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:02,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164265667] [2023-12-16 04:13:02,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164265667] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:13:02,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:13:02,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 04:13:02,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543515679] [2023-12-16 04:13:02,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:13:02,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:13:02,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:02,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:13:02,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:13:02,313 INFO L87 Difference]: Start difference. First operand 3017 states and 4920 transitions. Second operand has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) [2023-12-16 04:13:02,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:02,821 INFO L93 Difference]: Finished difference Result 6057 states and 9859 transitions. [2023-12-16 04:13:02,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:13:02,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) Word has length 543 [2023-12-16 04:13:02,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:02,836 INFO L225 Difference]: With dead ends: 6057 [2023-12-16 04:13:02,836 INFO L226 Difference]: Without dead ends: 3041 [2023-12-16 04:13:02,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1088 GetRequests, 1078 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:13:02,845 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 271 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:02,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 877 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:13:02,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2023-12-16 04:13:03,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 3033. [2023-12-16 04:13:03,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 2600 states have (on average 1.573846153846154) internal successors, (4092), 2608 states have internal predecessors, (4092), 416 states have call successors, (416), 16 states have call predecessors, (416), 16 states have return successors, (416), 408 states have call predecessors, (416), 416 states have call successors, (416) [2023-12-16 04:13:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4924 transitions. [2023-12-16 04:13:03,034 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4924 transitions. Word has length 543 [2023-12-16 04:13:03,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:03,034 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 4924 transitions. [2023-12-16 04:13:03,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) [2023-12-16 04:13:03,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4924 transitions. [2023-12-16 04:13:03,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-12-16 04:13:03,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:03,043 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:03,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:03,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-16 04:13:03,255 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:03,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:03,256 INFO L85 PathProgramCache]: Analyzing trace with hash 170892778, now seen corresponding path program 1 times [2023-12-16 04:13:03,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:03,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567208612] [2023-12-16 04:13:03,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:03,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:03,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:03,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745491230] [2023-12-16 04:13:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:03,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:03,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:03,338 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:13:03,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 04:13:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:03,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:13:03,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5529 proven. 162 refuted. 0 times theorem prover too weak. 6949 trivial. 0 not checked. [2023-12-16 04:13:04,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:13:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 75 proven. 162 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-16 04:13:04,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:04,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567208612] [2023-12-16 04:13:04,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:04,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745491230] [2023-12-16 04:13:04,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745491230] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:13:04,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:13:04,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:13:04,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8811051] [2023-12-16 04:13:04,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:13:04,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:13:04,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:04,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:13:04,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:13:04,405 INFO L87 Difference]: Start difference. First operand 3033 states and 4924 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) [2023-12-16 04:13:04,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:04,956 INFO L93 Difference]: Finished difference Result 6097 states and 9875 transitions. [2023-12-16 04:13:04,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:13:04,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) Word has length 543 [2023-12-16 04:13:04,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:04,969 INFO L225 Difference]: With dead ends: 6097 [2023-12-16 04:13:04,969 INFO L226 Difference]: Without dead ends: 3065 [2023-12-16 04:13:04,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1088 GetRequests, 1078 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:13:04,976 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 492 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:04,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 830 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:13:04,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2023-12-16 04:13:05,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 3049. [2023-12-16 04:13:05,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3049 states, 2612 states have (on average 1.548238897396631) internal successors, (4044), 2620 states have internal predecessors, (4044), 416 states have call successors, (416), 20 states have call predecessors, (416), 20 states have return successors, (416), 408 states have call predecessors, (416), 416 states have call successors, (416) [2023-12-16 04:13:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 4876 transitions. [2023-12-16 04:13:05,117 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 4876 transitions. Word has length 543 [2023-12-16 04:13:05,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:05,118 INFO L495 AbstractCegarLoop]: Abstraction has 3049 states and 4876 transitions. [2023-12-16 04:13:05,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) [2023-12-16 04:13:05,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 4876 transitions. [2023-12-16 04:13:05,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2023-12-16 04:13:05,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:05,124 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:05,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:05,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:05,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:05,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:05,335 INFO L85 PathProgramCache]: Analyzing trace with hash 740683692, now seen corresponding path program 1 times [2023-12-16 04:13:05,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:05,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677695172] [2023-12-16 04:13:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:05,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:05,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:05,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045099675] [2023-12-16 04:13:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:05,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:05,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:05,391 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:13:05,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 04:13:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:05,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 04:13:05,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:05,848 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-16 04:13:05,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:05,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:05,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677695172] [2023-12-16 04:13:05,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:05,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045099675] [2023-12-16 04:13:05,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045099675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:05,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:05,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:13:05,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089526883] [2023-12-16 04:13:05,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:05,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:13:05,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:05,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:13:05,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:13:05,852 INFO L87 Difference]: Start difference. First operand 3049 states and 4876 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:13:06,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:06,105 INFO L93 Difference]: Finished difference Result 6314 states and 10062 transitions. [2023-12-16 04:13:06,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:13:06,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 544 [2023-12-16 04:13:06,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:06,119 INFO L225 Difference]: With dead ends: 6314 [2023-12-16 04:13:06,120 INFO L226 Difference]: Without dead ends: 3266 [2023-12-16 04:13:06,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:13:06,127 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 633 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:06,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1193 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:13:06,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2023-12-16 04:13:06,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 3113. [2023-12-16 04:13:06,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3113 states, 2645 states have (on average 1.5141776937618148) internal successors, (4005), 2654 states have internal predecessors, (4005), 440 states have call successors, (440), 27 states have call predecessors, (440), 27 states have return successors, (440), 431 states have call predecessors, (440), 440 states have call successors, (440) [2023-12-16 04:13:06,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3113 states to 3113 states and 4885 transitions. [2023-12-16 04:13:06,263 INFO L78 Accepts]: Start accepts. Automaton has 3113 states and 4885 transitions. Word has length 544 [2023-12-16 04:13:06,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:06,264 INFO L495 AbstractCegarLoop]: Abstraction has 3113 states and 4885 transitions. [2023-12-16 04:13:06,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:13:06,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3113 states and 4885 transitions. [2023-12-16 04:13:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2023-12-16 04:13:06,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:06,270 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:06,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:06,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 04:13:06,478 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:06,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:06,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2019136758, now seen corresponding path program 1 times [2023-12-16 04:13:06,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:06,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389029015] [2023-12-16 04:13:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:06,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:06,533 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:06,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645971159] [2023-12-16 04:13:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:06,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:06,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:06,535 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:13:06,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 04:13:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:06,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:13:06,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5277 proven. 168 refuted. 0 times theorem prover too weak. 7195 trivial. 0 not checked. [2023-12-16 04:13:07,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:13:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 69 proven. 168 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-16 04:13:07,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:07,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389029015] [2023-12-16 04:13:07,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:07,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645971159] [2023-12-16 04:13:07,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645971159] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:13:07,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:13:07,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:13:07,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791371153] [2023-12-16 04:13:07,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:13:07,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:13:07,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:07,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:13:07,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:13:07,612 INFO L87 Difference]: Start difference. First operand 3113 states and 4885 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 2 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) [2023-12-16 04:13:08,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:08,067 INFO L93 Difference]: Finished difference Result 5535 states and 8653 transitions. [2023-12-16 04:13:08,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:13:08,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 2 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) Word has length 544 [2023-12-16 04:13:08,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:08,079 INFO L225 Difference]: With dead ends: 5535 [2023-12-16 04:13:08,079 INFO L226 Difference]: Without dead ends: 2471 [2023-12-16 04:13:08,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1090 GetRequests, 1080 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:13:08,086 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 425 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:08,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 823 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:13:08,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2023-12-16 04:13:08,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 1255. [2023-12-16 04:13:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1025 states have (on average 1.481951219512195) internal successors, (1519), 1028 states have internal predecessors, (1519), 214 states have call successors, (214), 15 states have call predecessors, (214), 15 states have return successors, (214), 211 states have call predecessors, (214), 214 states have call successors, (214) [2023-12-16 04:13:08,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1947 transitions. [2023-12-16 04:13:08,181 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1947 transitions. Word has length 544 [2023-12-16 04:13:08,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:08,182 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 1947 transitions. [2023-12-16 04:13:08,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 2 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) [2023-12-16 04:13:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1947 transitions. [2023-12-16 04:13:08,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2023-12-16 04:13:08,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:08,188 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:08,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:08,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-16 04:13:08,396 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:08,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:08,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1760829766, now seen corresponding path program 1 times [2023-12-16 04:13:08,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:08,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92550195] [2023-12-16 04:13:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:08,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:08,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:08,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512400333] [2023-12-16 04:13:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:08,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:08,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:08,458 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:13:08,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 04:13:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:08,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:13:08,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-16 04:13:10,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:10,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:10,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92550195] [2023-12-16 04:13:10,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:10,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512400333] [2023-12-16 04:13:10,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512400333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:10,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:10,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:13:10,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594448787] [2023-12-16 04:13:10,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:10,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:13:10,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:10,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:13:10,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:13:10,137 INFO L87 Difference]: Start difference. First operand 1255 states and 1947 transitions. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:13:10,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:10,868 INFO L93 Difference]: Finished difference Result 3703 states and 5712 transitions. [2023-12-16 04:13:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:13:10,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 544 [2023-12-16 04:13:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:10,884 INFO L225 Difference]: With dead ends: 3703 [2023-12-16 04:13:10,884 INFO L226 Difference]: Without dead ends: 2494 [2023-12-16 04:13:10,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:13:10,888 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 543 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:10,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1610 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 04:13:10,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2023-12-16 04:13:11,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 2298. [2023-12-16 04:13:11,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 1860 states have (on average 1.472043010752688) internal successors, (2738), 1865 states have internal predecessors, (2738), 406 states have call successors, (406), 31 states have call predecessors, (406), 31 states have return successors, (406), 401 states have call predecessors, (406), 406 states have call successors, (406) [2023-12-16 04:13:11,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 3550 transitions. [2023-12-16 04:13:11,036 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 3550 transitions. Word has length 544 [2023-12-16 04:13:11,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:11,037 INFO L495 AbstractCegarLoop]: Abstraction has 2298 states and 3550 transitions. [2023-12-16 04:13:11,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:13:11,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 3550 transitions. [2023-12-16 04:13:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2023-12-16 04:13:11,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:11,042 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:11,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:11,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 04:13:11,251 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:11,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:11,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1513069176, now seen corresponding path program 1 times [2023-12-16 04:13:11,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:11,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215403211] [2023-12-16 04:13:11,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:11,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:11,302 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:11,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468827902] [2023-12-16 04:13:11,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:11,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:11,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:11,304 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:13:11,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 04:13:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:11,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:13:11,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-16 04:13:12,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:12,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:12,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215403211] [2023-12-16 04:13:12,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:12,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468827902] [2023-12-16 04:13:12,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468827902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:12,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:12,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:13:12,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872372365] [2023-12-16 04:13:12,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:12,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:13:12,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:12,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:13:12,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:13:12,289 INFO L87 Difference]: Start difference. First operand 2298 states and 3550 transitions. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:13:12,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:12,997 INFO L93 Difference]: Finished difference Result 5975 states and 9257 transitions. [2023-12-16 04:13:12,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:13:12,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 544 [2023-12-16 04:13:12,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:13,011 INFO L225 Difference]: With dead ends: 5975 [2023-12-16 04:13:13,011 INFO L226 Difference]: Without dead ends: 3723 [2023-12-16 04:13:13,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:13:13,023 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1120 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:13,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 2076 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:13:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2023-12-16 04:13:13,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 2461. [2023-12-16 04:13:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 1961 states have (on average 1.4563997960224375) internal successors, (2856), 1965 states have internal predecessors, (2856), 464 states have call successors, (464), 35 states have call predecessors, (464), 35 states have return successors, (464), 460 states have call predecessors, (464), 464 states have call successors, (464) [2023-12-16 04:13:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 3784 transitions. [2023-12-16 04:13:13,191 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 3784 transitions. Word has length 544 [2023-12-16 04:13:13,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:13,192 INFO L495 AbstractCegarLoop]: Abstraction has 2461 states and 3784 transitions. [2023-12-16 04:13:13,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:13:13,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 3784 transitions. [2023-12-16 04:13:13,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2023-12-16 04:13:13,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:13,196 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:13,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:13,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 04:13:13,405 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:13,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:13,406 INFO L85 PathProgramCache]: Analyzing trace with hash -173110662, now seen corresponding path program 1 times [2023-12-16 04:13:13,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:13,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127183640] [2023-12-16 04:13:13,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:13,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:13,461 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:13,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265371981] [2023-12-16 04:13:13,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:13,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:13,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:13,463 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:13:13,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 04:13:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:13,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:13:13,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 547 proven. 3 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-16 04:13:14,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:13:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 234 proven. 3 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-16 04:13:14,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:14,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127183640] [2023-12-16 04:13:14,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:14,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265371981] [2023-12-16 04:13:14,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265371981] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:13:14,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:13:14,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 04:13:14,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866295328] [2023-12-16 04:13:14,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:13:14,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:13:14,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:14,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:13:14,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:13:14,231 INFO L87 Difference]: Start difference. First operand 2461 states and 3784 transitions. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2023-12-16 04:13:15,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:15,088 INFO L93 Difference]: Finished difference Result 3372 states and 5169 transitions. [2023-12-16 04:13:15,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 04:13:15,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 544 [2023-12-16 04:13:15,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:15,099 INFO L225 Difference]: With dead ends: 3372 [2023-12-16 04:13:15,099 INFO L226 Difference]: Without dead ends: 1120 [2023-12-16 04:13:15,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1097 GetRequests, 1079 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-16 04:13:15,106 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 566 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:15,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 1363 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 04:13:15,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2023-12-16 04:13:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1066. [2023-12-16 04:13:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 771 states have (on average 1.3618677042801557) internal successors, (1050), 773 states have internal predecessors, (1050), 272 states have call successors, (272), 22 states have call predecessors, (272), 22 states have return successors, (272), 270 states have call predecessors, (272), 272 states have call successors, (272) [2023-12-16 04:13:15,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1594 transitions. [2023-12-16 04:13:15,197 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1594 transitions. Word has length 544 [2023-12-16 04:13:15,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:15,198 INFO L495 AbstractCegarLoop]: Abstraction has 1066 states and 1594 transitions. [2023-12-16 04:13:15,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2023-12-16 04:13:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1594 transitions. [2023-12-16 04:13:15,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2023-12-16 04:13:15,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:15,202 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:15,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:15,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:15,413 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:15,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:15,413 INFO L85 PathProgramCache]: Analyzing trace with hash 229747076, now seen corresponding path program 1 times [2023-12-16 04:13:15,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:15,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458584776] [2023-12-16 04:13:15,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:15,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:15,470 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:15,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751768383] [2023-12-16 04:13:15,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:15,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:15,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:15,472 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:13:15,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 04:13:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:15,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 04:13:15,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 2304 proven. 0 refuted. 0 times theorem prover too weak. 10336 trivial. 0 not checked. [2023-12-16 04:13:17,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:17,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:17,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458584776] [2023-12-16 04:13:17,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:17,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751768383] [2023-12-16 04:13:17,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751768383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:17,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:17,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:13:17,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152733816] [2023-12-16 04:13:17,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:17,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:13:17,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:17,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:13:17,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:13:17,160 INFO L87 Difference]: Start difference. First operand 1066 states and 1594 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-16 04:13:17,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:17,581 INFO L93 Difference]: Finished difference Result 2772 states and 4178 transitions. [2023-12-16 04:13:17,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:13:17,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 545 [2023-12-16 04:13:17,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:17,588 INFO L225 Difference]: With dead ends: 2772 [2023-12-16 04:13:17,588 INFO L226 Difference]: Without dead ends: 1919 [2023-12-16 04:13:17,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:13:17,591 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 146 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:17,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1406 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:13:17,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2023-12-16 04:13:17,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1905. [2023-12-16 04:13:17,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1404 states have (on average 1.3753561253561253) internal successors, (1931), 1408 states have internal predecessors, (1931), 464 states have call successors, (464), 36 states have call predecessors, (464), 36 states have return successors, (464), 460 states have call predecessors, (464), 464 states have call successors, (464) [2023-12-16 04:13:17,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2859 transitions. [2023-12-16 04:13:17,755 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2859 transitions. Word has length 545 [2023-12-16 04:13:17,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:17,755 INFO L495 AbstractCegarLoop]: Abstraction has 1905 states and 2859 transitions. [2023-12-16 04:13:17,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-16 04:13:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2859 transitions. [2023-12-16 04:13:17,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2023-12-16 04:13:17,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:17,760 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:17,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:17,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-16 04:13:17,970 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:17,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:17,970 INFO L85 PathProgramCache]: Analyzing trace with hash -791321278, now seen corresponding path program 1 times [2023-12-16 04:13:17,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:17,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366612953] [2023-12-16 04:13:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:18,029 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:18,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [312349201] [2023-12-16 04:13:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:18,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:18,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:18,030 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:13:18,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 04:13:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:18,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 04:13:18,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 7311 proven. 141 refuted. 0 times theorem prover too weak. 5188 trivial. 0 not checked. [2023-12-16 04:13:19,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:13:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 96 proven. 141 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-16 04:13:20,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:20,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366612953] [2023-12-16 04:13:20,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:20,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312349201] [2023-12-16 04:13:20,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312349201] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:13:20,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:13:20,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-16 04:13:20,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990085893] [2023-12-16 04:13:20,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:13:20,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 04:13:20,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:20,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 04:13:20,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:13:20,142 INFO L87 Difference]: Start difference. First operand 1905 states and 2859 transitions. Second operand has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 7 states have call successors, (146), 4 states have call predecessors, (146), 6 states have return successors, (146), 7 states have call predecessors, (146), 7 states have call successors, (146) [2023-12-16 04:13:21,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:21,824 INFO L93 Difference]: Finished difference Result 6360 states and 9566 transitions. [2023-12-16 04:13:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 04:13:21,825 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 7 states have call successors, (146), 4 states have call predecessors, (146), 6 states have return successors, (146), 7 states have call predecessors, (146), 7 states have call successors, (146) Word has length 545 [2023-12-16 04:13:21,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:21,838 INFO L225 Difference]: With dead ends: 6360 [2023-12-16 04:13:21,838 INFO L226 Difference]: Without dead ends: 4668 [2023-12-16 04:13:21,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1105 GetRequests, 1079 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2023-12-16 04:13:21,844 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1607 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:21,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 1482 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 04:13:21,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4668 states. [2023-12-16 04:13:22,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4668 to 3818. [2023-12-16 04:13:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 2896 states have (on average 1.3905386740331491) internal successors, (4027), 2904 states have internal predecessors, (4027), 848 states have call successors, (848), 73 states have call predecessors, (848), 73 states have return successors, (848), 840 states have call predecessors, (848), 848 states have call successors, (848) [2023-12-16 04:13:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 5723 transitions. [2023-12-16 04:13:22,196 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 5723 transitions. Word has length 545 [2023-12-16 04:13:22,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:22,197 INFO L495 AbstractCegarLoop]: Abstraction has 3818 states and 5723 transitions. [2023-12-16 04:13:22,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 7 states have call successors, (146), 4 states have call predecessors, (146), 6 states have return successors, (146), 7 states have call predecessors, (146), 7 states have call successors, (146) [2023-12-16 04:13:22,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 5723 transitions. [2023-12-16 04:13:22,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2023-12-16 04:13:22,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:22,202 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:22,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:22,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 04:13:22,417 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:22,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:22,418 INFO L85 PathProgramCache]: Analyzing trace with hash -589497344, now seen corresponding path program 1 times [2023-12-16 04:13:22,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:22,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549874571] [2023-12-16 04:13:22,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:22,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:22,476 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:22,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022949444] [2023-12-16 04:13:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:22,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:22,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:22,478 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:13:22,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-16 04:13:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:23,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:13:23,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-16 04:13:23,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:23,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549874571] [2023-12-16 04:13:23,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022949444] [2023-12-16 04:13:23,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022949444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:23,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:23,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:13:23,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640958155] [2023-12-16 04:13:23,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:23,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:13:23,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:23,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:13:23,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:13:23,308 INFO L87 Difference]: Start difference. First operand 3818 states and 5723 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:13:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:23,656 INFO L93 Difference]: Finished difference Result 7384 states and 11096 transitions. [2023-12-16 04:13:23,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:13:23,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 545 [2023-12-16 04:13:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:23,669 INFO L225 Difference]: With dead ends: 7384 [2023-12-16 04:13:23,669 INFO L226 Difference]: Without dead ends: 3818 [2023-12-16 04:13:23,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:13:23,680 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 432 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:23,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 759 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:13:23,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2023-12-16 04:13:24,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 3818. [2023-12-16 04:13:24,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 2896 states have (on average 1.3836325966850829) internal successors, (4007), 2904 states have internal predecessors, (4007), 848 states have call successors, (848), 73 states have call predecessors, (848), 73 states have return successors, (848), 840 states have call predecessors, (848), 848 states have call successors, (848) [2023-12-16 04:13:24,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 5703 transitions. [2023-12-16 04:13:24,104 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 5703 transitions. Word has length 545 [2023-12-16 04:13:24,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:24,105 INFO L495 AbstractCegarLoop]: Abstraction has 3818 states and 5703 transitions. [2023-12-16 04:13:24,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:13:24,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 5703 transitions. [2023-12-16 04:13:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2023-12-16 04:13:24,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:24,110 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:24,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:24,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-16 04:13:24,321 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:24,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:24,321 INFO L85 PathProgramCache]: Analyzing trace with hash 70034178, now seen corresponding path program 1 times [2023-12-16 04:13:24,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:24,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284413775] [2023-12-16 04:13:24,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:24,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:24,379 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:24,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508561928] [2023-12-16 04:13:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:24,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:24,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:24,383 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:13:24,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-16 04:13:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:25,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:13:25,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-16 04:13:25,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:25,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:25,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284413775] [2023-12-16 04:13:25,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:25,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508561928] [2023-12-16 04:13:25,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508561928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:25,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:25,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:13:25,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672417929] [2023-12-16 04:13:25,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:25,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:13:25,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:25,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:13:25,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:13:25,505 INFO L87 Difference]: Start difference. First operand 3818 states and 5703 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:13:25,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:25,990 INFO L93 Difference]: Finished difference Result 8006 states and 11966 transitions. [2023-12-16 04:13:25,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:13:25,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 545 [2023-12-16 04:13:25,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:26,005 INFO L225 Difference]: With dead ends: 8006 [2023-12-16 04:13:26,005 INFO L226 Difference]: Without dead ends: 4380 [2023-12-16 04:13:26,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:13:26,016 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 485 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:26,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1644 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:13:26,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4380 states. [2023-12-16 04:13:26,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4380 to 3818. [2023-12-16 04:13:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 2896 states have (on average 1.3829419889502763) internal successors, (4005), 2904 states have internal predecessors, (4005), 848 states have call successors, (848), 73 states have call predecessors, (848), 73 states have return successors, (848), 840 states have call predecessors, (848), 848 states have call successors, (848) [2023-12-16 04:13:26,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 5701 transitions. [2023-12-16 04:13:26,408 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 5701 transitions. Word has length 545 [2023-12-16 04:13:26,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:26,409 INFO L495 AbstractCegarLoop]: Abstraction has 3818 states and 5701 transitions. [2023-12-16 04:13:26,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:13:26,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 5701 transitions. [2023-12-16 04:13:26,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2023-12-16 04:13:26,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:26,414 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:26,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:26,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-16 04:13:26,626 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:26,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:26,627 INFO L85 PathProgramCache]: Analyzing trace with hash -987803900, now seen corresponding path program 1 times [2023-12-16 04:13:26,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:26,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692040067] [2023-12-16 04:13:26,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:26,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:26,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:26,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767750483] [2023-12-16 04:13:26,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:26,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:26,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:26,701 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:13:26,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-16 04:13:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:27,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:13:27,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-16 04:13:27,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:27,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:27,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692040067] [2023-12-16 04:13:27,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:27,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767750483] [2023-12-16 04:13:27,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767750483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:27,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:27,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:13:27,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774314570] [2023-12-16 04:13:27,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:27,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:13:27,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:27,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:13:27,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:13:27,789 INFO L87 Difference]: Start difference. First operand 3818 states and 5701 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:13:28,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:28,344 INFO L93 Difference]: Finished difference Result 8018 states and 11981 transitions. [2023-12-16 04:13:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:13:28,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 545 [2023-12-16 04:13:28,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:28,359 INFO L225 Difference]: With dead ends: 8018 [2023-12-16 04:13:28,360 INFO L226 Difference]: Without dead ends: 4377 [2023-12-16 04:13:28,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:13:28,369 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 353 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:28,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1228 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:13:28,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2023-12-16 04:13:28,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 3815. [2023-12-16 04:13:28,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3815 states, 2893 states have (on average 1.38230210853785) internal successors, (3999), 2901 states have internal predecessors, (3999), 848 states have call successors, (848), 73 states have call predecessors, (848), 73 states have return successors, (848), 840 states have call predecessors, (848), 848 states have call successors, (848) [2023-12-16 04:13:28,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3815 states to 3815 states and 5695 transitions. [2023-12-16 04:13:28,757 INFO L78 Accepts]: Start accepts. Automaton has 3815 states and 5695 transitions. Word has length 545 [2023-12-16 04:13:28,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:28,758 INFO L495 AbstractCegarLoop]: Abstraction has 3815 states and 5695 transitions. [2023-12-16 04:13:28,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 04:13:28,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3815 states and 5695 transitions. [2023-12-16 04:13:28,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2023-12-16 04:13:28,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:28,763 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:28,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:28,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:28,974 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:28,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:28,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1758537466, now seen corresponding path program 1 times [2023-12-16 04:13:28,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:28,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138325607] [2023-12-16 04:13:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:28,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:29,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:29,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596142243] [2023-12-16 04:13:29,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:29,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:29,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:29,024 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) [2023-12-16 04:13:29,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-16 04:13:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:29,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-16 04:13:29,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 1738 proven. 657 refuted. 0 times theorem prover too weak. 10245 trivial. 0 not checked. [2023-12-16 04:13:32,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 04:13:36,427 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:13:36,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:36,467 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:13:36,467 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:13:36,639 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 [2023-12-16 04:13:36,639 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 546 with TraceHistMax 80,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-3-2-1 context. [2023-12-16 04:13:36,644 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] [2023-12-16 04:13:36,646 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:13:36,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:13:36 BoogieIcfgContainer [2023-12-16 04:13:36,649 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:13:36,649 INFO L158 Benchmark]: Toolchain (without parser) took 51793.79ms. Allocated memory was 262.1MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 206.8MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 536.8MB. Max. memory is 8.0GB. [2023-12-16 04:13:36,650 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 192.9MB. Free memory is still 138.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:13:36,650 INFO L158 Benchmark]: CACSL2BoogieTranslator took 610.80ms. Allocated memory is still 262.1MB. Free memory was 206.8MB in the beginning and 170.0MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-16 04:13:36,650 INFO L158 Benchmark]: Boogie Procedure Inliner took 116.45ms. Allocated memory is still 262.1MB. Free memory was 170.0MB in the beginning and 157.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 04:13:36,650 INFO L158 Benchmark]: Boogie Preprocessor took 182.03ms. Allocated memory is still 262.1MB. Free memory was 157.5MB in the beginning and 197.0MB in the end (delta: -39.5MB). Peak memory consumption was 15.9MB. Max. memory is 8.0GB. [2023-12-16 04:13:36,651 INFO L158 Benchmark]: RCFGBuilder took 1190.26ms. Allocated memory is still 262.1MB. Free memory was 197.0MB in the beginning and 111.2MB in the end (delta: 85.9MB). Peak memory consumption was 86.0MB. Max. memory is 8.0GB. [2023-12-16 04:13:36,651 INFO L158 Benchmark]: TraceAbstraction took 49684.72ms. Allocated memory was 262.1MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 110.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 440.1MB. Max. memory is 8.0GB. [2023-12-16 04:13:36,652 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 192.9MB. Free memory is still 138.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 610.80ms. Allocated memory is still 262.1MB. Free memory was 206.8MB in the beginning and 170.0MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 116.45ms. Allocated memory is still 262.1MB. Free memory was 170.0MB in the beginning and 157.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 182.03ms. Allocated memory is still 262.1MB. Free memory was 157.5MB in the beginning and 197.0MB in the end (delta: -39.5MB). Peak memory consumption was 15.9MB. Max. memory is 8.0GB. * RCFGBuilder took 1190.26ms. Allocated memory is still 262.1MB. Free memory was 197.0MB in the beginning and 111.2MB in the end (delta: 85.9MB). Peak memory consumption was 86.0MB. Max. memory is 8.0GB. * TraceAbstraction took 49684.72ms. Allocated memory was 262.1MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 110.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 440.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 546 with TraceHistMax 80,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-3-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 269 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 49.6s, OverallIterations: 20, TraceHistogramMax: 80, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 9.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8968 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8773 mSDsluCounter, 22578 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14573 mSDsCounter, 1300 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5586 IncrementalHoareTripleChecker+Invalid, 6886 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1300 mSolverCounterUnsat, 8005 mSDtfsCounter, 5586 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13083 GetRequests, 12957 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3818occurred in iteration=16, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 19 MinimizatonAttempts, 5914 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.6s SsaConstructionTime, 3.7s SatisfiabilityAnalysisTime, 14.9s InterpolantComputationTime, 10869 NumberOfCodeBlocks, 10869 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 13022 ConstructedInterpolants, 0 QuantifiedInterpolants, 37907 SizeOfPredicates, 48 NumberOfNonLiveVariables, 25496 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 24 InterpolantComputations, 14 PerfectInterpolantSequences, 302166/303360 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