/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_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-8.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 14:46:42,802 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 14:46:42,855 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 14:46:42,859 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 14:46:42,859 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 14:46:42,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 14:46:42,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 14:46:42,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 14:46:42,880 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 14:46:42,880 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 14:46:42,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 14:46:42,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 14:46:42,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 14:46:42,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 14:46:42,882 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 14:46:42,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 14:46:42,883 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 14:46:42,883 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 14:46:42,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 14:46:42,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 14:46:42,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 14:46:42,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 14:46:42,884 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 14:46:42,885 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 14:46:42,885 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 14:46:42,885 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 14:46:42,885 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 14:46:42,886 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 14:46:42,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 14:46:42,886 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 14:46:42,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 14:46:42,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 14:46:42,887 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 14:46:42,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 14:46:42,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 14:46:42,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 14:46:42,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 14:46:42,888 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 14:46:42,888 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 14:46:42,888 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 14:46:42,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 14:46:42,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 14:46:42,888 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 14:46:42,889 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 14:46:42,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 14:46:42,889 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 14:46:42,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 14:46:43,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 14:46:43,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 14:46:43,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 14:46:43,114 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 14:46:43,114 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 14:46:43,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-8.i [2023-12-16 14:46:44,325 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 14:46:44,557 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 14:46:44,558 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-8.i [2023-12-16 14:46:44,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fee65d2a0/8e0d876945e1428180332777f16a412b/FLAGf27307f79 [2023-12-16 14:46:44,588 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fee65d2a0/8e0d876945e1428180332777f16a412b [2023-12-16 14:46:44,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 14:46:44,592 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 14:46:44,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 14:46:44,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 14:46:44,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 14:46:44,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:46:44" (1/1) ... [2023-12-16 14:46:44,601 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49319eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:46:44, skipping insertion in model container [2023-12-16 14:46:44,601 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:46:44" (1/1) ... [2023-12-16 14:46:44,658 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 14:46:44,786 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_amount250_file-8.i[915,928] [2023-12-16 14:46:44,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 14:46:44,924 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 14:46:44,946 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_amount250_file-8.i[915,928] [2023-12-16 14:46:45,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 14:46:45,040 INFO L206 MainTranslator]: Completed translation [2023-12-16 14:46:45,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:46:45 WrapperNode [2023-12-16 14:46:45,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 14:46:45,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 14:46:45,042 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 14:46:45,042 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 14:46:45,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:46:45" (1/1) ... [2023-12-16 14:46:45,074 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:46:45" (1/1) ... [2023-12-16 14:46:45,114 INFO L138 Inliner]: procedures = 27, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 336 [2023-12-16 14:46:45,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 14:46:45,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 14:46:45,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 14:46:45,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 14:46:45,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:46:45" (1/1) ... [2023-12-16 14:46:45,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:46:45" (1/1) ... [2023-12-16 14:46:45,133 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:46:45" (1/1) ... [2023-12-16 14:46:45,151 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 14:46:45,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:46:45" (1/1) ... [2023-12-16 14:46:45,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:46:45" (1/1) ... [2023-12-16 14:46:45,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:46:45" (1/1) ... [2023-12-16 14:46:45,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:46:45" (1/1) ... [2023-12-16 14:46:45,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:46:45" (1/1) ... [2023-12-16 14:46:45,176 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:46:45" (1/1) ... [2023-12-16 14:46:45,181 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 14:46:45,182 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 14:46:45,182 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 14:46:45,182 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 14:46:45,183 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:46:45" (1/1) ... [2023-12-16 14:46:45,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 14:46:45,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 14:46:45,230 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 14:46:45,257 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 14:46:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 14:46:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 14:46:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 14:46:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 14:46:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 14:46:45,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 14:46:45,374 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 14:46:45,376 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 14:46:49,256 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 14:46:49,326 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 14:46:49,326 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 14:46:49,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:46:49 BoogieIcfgContainer [2023-12-16 14:46:49,327 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 14:46:49,330 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 14:46:49,330 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 14:46:49,333 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 14:46:49,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:46:44" (1/3) ... [2023-12-16 14:46:49,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3275f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:46:49, skipping insertion in model container [2023-12-16 14:46:49,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:46:45" (2/3) ... [2023-12-16 14:46:49,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3275f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:46:49, skipping insertion in model container [2023-12-16 14:46:49,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:46:49" (3/3) ... [2023-12-16 14:46:49,337 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-8.i [2023-12-16 14:46:49,353 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 14:46:49,354 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 14:46:49,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 14:46:49,424 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;@5049a8cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 14:46:49,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 14:46:49,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 95 states have (on average 1.5473684210526315) internal successors, (147), 96 states have internal predecessors, (147), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 14:46:49,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2023-12-16 14:46:49,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:46:49,448 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:46:49,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:46:49,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:46:49,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2145249662, now seen corresponding path program 1 times [2023-12-16 14:46:49,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:46:49,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510781529] [2023-12-16 14:46:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:46:49,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:46:49,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:46:49,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 14:46:49,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 14:46:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:46:50,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 14:46:50,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:46:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 4426 trivial. 0 not checked. [2023-12-16 14:46:50,132 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 14:46:50,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:46:50,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510781529] [2023-12-16 14:46:50,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510781529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 14:46:50,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 14:46:50,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 14:46:50,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098687073] [2023-12-16 14:46:50,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 14:46:50,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 14:46:50,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:46:50,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 14:46:50,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 14:46:50,172 INFO L87 Difference]: Start difference. First operand has 148 states, 95 states have (on average 1.5473684210526315) internal successors, (147), 96 states have internal predecessors, (147), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-16 14:46:52,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:46:52,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:46:52,157 INFO L93 Difference]: Finished difference Result 293 states and 542 transitions. [2023-12-16 14:46:52,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 14:46:52,203 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 318 [2023-12-16 14:46:52,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:46:52,211 INFO L225 Difference]: With dead ends: 293 [2023-12-16 14:46:52,211 INFO L226 Difference]: Without dead ends: 146 [2023-12-16 14:46:52,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 317 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 14:46:52,218 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 14:46:52,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 14:46:52,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-16 14:46:52,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-12-16 14:46:52,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 94 states have (on average 1.5106382978723405) internal successors, (142), 94 states have internal predecessors, (142), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 14:46:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 242 transitions. [2023-12-16 14:46:52,281 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 242 transitions. Word has length 318 [2023-12-16 14:46:52,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:46:52,281 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 242 transitions. [2023-12-16 14:46:52,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-16 14:46:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 242 transitions. [2023-12-16 14:46:52,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2023-12-16 14:46:52,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:46:52,289 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:46:52,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 14:46:52,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:46:52,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:46:52,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:46:52,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1862682938, now seen corresponding path program 1 times [2023-12-16 14:46:52,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:46:52,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302968668] [2023-12-16 14:46:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:46:52,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:46:52,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:46:52,508 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 14:46:52,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 14:46:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:46:53,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 14:46:53,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:46:53,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-16 14:46:53,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 14:46:53,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:46:53,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302968668] [2023-12-16 14:46:53,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302968668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 14:46:53,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 14:46:53,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 14:46:53,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896260599] [2023-12-16 14:46:53,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 14:46:53,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 14:46:53,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:46:53,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 14:46:53,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 14:46:53,276 INFO L87 Difference]: Start difference. First operand 146 states and 242 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 14:46:56,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:46:57,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:46:59,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:46:59,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:46:59,153 INFO L93 Difference]: Finished difference Result 423 states and 698 transitions. [2023-12-16 14:46:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 14:46:59,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 318 [2023-12-16 14:46:59,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:46:59,159 INFO L225 Difference]: With dead ends: 423 [2023-12-16 14:46:59,159 INFO L226 Difference]: Without dead ends: 278 [2023-12-16 14:46:59,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 316 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 14:46:59,162 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 195 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-16 14:46:59,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 608 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-16 14:46:59,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-16 14:46:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 276. [2023-12-16 14:46:59,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 173 states have (on average 1.4104046242774566) internal successors, (244), 173 states have internal predecessors, (244), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-16 14:46:59,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 444 transitions. [2023-12-16 14:46:59,248 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 444 transitions. Word has length 318 [2023-12-16 14:46:59,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:46:59,249 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 444 transitions. [2023-12-16 14:46:59,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 14:46:59,250 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 444 transitions. [2023-12-16 14:46:59,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2023-12-16 14:46:59,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:46:59,253 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:46:59,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 14:46:59,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:46:59,472 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:46:59,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:46:59,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1963183234, now seen corresponding path program 1 times [2023-12-16 14:46:59,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:46:59,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242300169] [2023-12-16 14:46:59,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:46:59,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:46:59,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:46:59,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 14:46:59,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 14:46:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:47:00,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 14:47:00,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:47:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-16 14:47:02,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 14:47:02,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:47:02,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242300169] [2023-12-16 14:47:02,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242300169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 14:47:02,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 14:47:02,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 14:47:02,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154683159] [2023-12-16 14:47:02,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 14:47:02,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 14:47:02,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:47:02,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 14:47:02,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 14:47:02,016 INFO L87 Difference]: Start difference. First operand 276 states and 444 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 14:47:04,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:47:06,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:47:06,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:47:06,409 INFO L93 Difference]: Finished difference Result 823 states and 1326 transitions. [2023-12-16 14:47:06,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 14:47:06,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 318 [2023-12-16 14:47:06,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:47:06,415 INFO L225 Difference]: With dead ends: 823 [2023-12-16 14:47:06,415 INFO L226 Difference]: Without dead ends: 548 [2023-12-16 14:47:06,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 316 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 14:47:06,417 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 79 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-16 14:47:06,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 435 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-16 14:47:06,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-12-16 14:47:06,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 536. [2023-12-16 14:47:06,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 331 states have (on average 1.404833836858006) internal successors, (465), 331 states have internal predecessors, (465), 200 states have call successors, (200), 4 states have call predecessors, (200), 4 states have return successors, (200), 200 states have call predecessors, (200), 200 states have call successors, (200) [2023-12-16 14:47:06,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 865 transitions. [2023-12-16 14:47:06,471 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 865 transitions. Word has length 318 [2023-12-16 14:47:06,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:47:06,472 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 865 transitions. [2023-12-16 14:47:06,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-16 14:47:06,473 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 865 transitions. [2023-12-16 14:47:06,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2023-12-16 14:47:06,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:47:06,477 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:06,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 14:47:06,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:47:06,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:47:06,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:47:06,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1145534784, now seen corresponding path program 1 times [2023-12-16 14:47:06,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:47:06,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839664317] [2023-12-16 14:47:06,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:47:06,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:47:06,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:47:06,696 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 14:47:06,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 14:47:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:47:07,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 14:47:07,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:47:12,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1985 proven. 210 refuted. 0 times theorem prover too weak. 2705 trivial. 0 not checked. [2023-12-16 14:47:12,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 14:47:12,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:47:12,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839664317] [2023-12-16 14:47:12,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839664317] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 14:47:12,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [331037800] [2023-12-16 14:47:12,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:47:12,961 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 14:47:12,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 14:47:13,010 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 14:47:13,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-16 14:47:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:47:14,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 14:47:14,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:47:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1947 proven. 108 refuted. 0 times theorem prover too weak. 2845 trivial. 0 not checked. [2023-12-16 14:47:17,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 14:47:18,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [331037800] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 14:47:18,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 14:47:18,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2023-12-16 14:47:18,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159171366] [2023-12-16 14:47:18,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 14:47:18,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 14:47:18,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:47:18,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 14:47:18,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 14:47:18,316 INFO L87 Difference]: Start difference. First operand 536 states and 865 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 3 states have call successors, (85), 3 states have call predecessors, (85), 5 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2023-12-16 14:47:24,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:47:27,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 14:47:27,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 14:47:27,804 INFO L93 Difference]: Finished difference Result 1102 states and 1758 transitions. [2023-12-16 14:47:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 14:47:27,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 3 states have call successors, (85), 3 states have call predecessors, (85), 5 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) Word has length 318 [2023-12-16 14:47:27,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 14:47:27,814 INFO L225 Difference]: With dead ends: 1102 [2023-12-16 14:47:27,814 INFO L226 Difference]: Without dead ends: 567 [2023-12-16 14:47:27,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2023-12-16 14:47:27,820 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 187 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-16 14:47:27,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 809 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-12-16 14:47:27,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2023-12-16 14:47:27,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 552. [2023-12-16 14:47:27,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 343 states have (on average 1.3819241982507289) internal successors, (474), 343 states have internal predecessors, (474), 200 states have call successors, (200), 8 states have call predecessors, (200), 8 states have return successors, (200), 200 states have call predecessors, (200), 200 states have call successors, (200) [2023-12-16 14:47:27,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 874 transitions. [2023-12-16 14:47:27,864 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 874 transitions. Word has length 318 [2023-12-16 14:47:27,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 14:47:27,865 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 874 transitions. [2023-12-16 14:47:27,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 3 states have call successors, (85), 3 states have call predecessors, (85), 5 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2023-12-16 14:47:27,865 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 874 transitions. [2023-12-16 14:47:27,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2023-12-16 14:47:27,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 14:47:27,867 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:27,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 14:47:28,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-16 14:47:28,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 14:47:28,286 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 14:47:28,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 14:47:28,286 INFO L85 PathProgramCache]: Analyzing trace with hash -442813118, now seen corresponding path program 1 times [2023-12-16 14:47:28,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 14:47:28,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536866312] [2023-12-16 14:47:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:47:28,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 14:47:28,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 14:47:28,288 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 14:47:28,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 14:47:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:47:28,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 14:47:28,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:47:31,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2443 proven. 84 refuted. 0 times theorem prover too weak. 2373 trivial. 0 not checked. [2023-12-16 14:47:31,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 14:47:33,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 14:47:33,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536866312] [2023-12-16 14:47:33,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536866312] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 14:47:33,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [143484040] [2023-12-16 14:47:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 14:47:33,843 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 14:47:33,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 14:47:33,845 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 14:47:33,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-16 14:47:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 14:47:37,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 14:47:37,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 14:47:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2473 proven. 162 refuted. 0 times theorem prover too weak. 2265 trivial. 0 not checked. [2023-12-16 14:47:43,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 14:47:48,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [143484040] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 14:47:48,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 14:47:48,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 16 [2023-12-16 14:47:48,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836693315] [2023-12-16 14:47:48,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 14:47:48,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 14:47:48,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 14:47:48,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 14:47:48,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2023-12-16 14:47:48,466 INFO L87 Difference]: Start difference. First operand 552 states and 874 transitions. Second operand has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 15 states have internal predecessors, (137), 5 states have call successors, (100), 5 states have call predecessors, (100), 7 states have return successors, (100), 5 states have call predecessors, (100), 5 states have call successors, (100) Received shutdown request... [2023-12-16 14:47:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 14:47:51,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 875 GetRequests, 846 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2023-12-16 14:47:51,662 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 59 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 14:47:51,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 258 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 14:47:51,664 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 14:47:51,670 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 14:47:51,670 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 14:47:51,678 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 14:47:51,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 14:47:51,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-16 14:47:52,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 14:47:52,074 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (552states) and FLOYD_HOARE automaton (currently 12 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (86 states constructed, input type IntersectNwa). [2023-12-16 14:47:52,080 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-16 14:47:52,082 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 14:47:52,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:47:52 BoogieIcfgContainer [2023-12-16 14:47:52,084 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 14:47:52,085 INFO L158 Benchmark]: Toolchain (without parser) took 67493.33ms. Allocated memory was 269.5MB in the beginning and 324.0MB in the end (delta: 54.5MB). Free memory was 215.1MB in the beginning and 268.6MB in the end (delta: -53.5MB). Peak memory consumption was 179.8MB. Max. memory is 8.0GB. [2023-12-16 14:47:52,085 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 194.0MB. Free memory is still 141.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 14:47:52,085 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.09ms. Allocated memory is still 269.5MB. Free memory was 214.6MB in the beginning and 191.0MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-16 14:47:52,085 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.52ms. Allocated memory is still 269.5MB. Free memory was 191.0MB in the beginning and 186.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 14:47:52,086 INFO L158 Benchmark]: Boogie Preprocessor took 66.42ms. Allocated memory is still 269.5MB. Free memory was 186.8MB in the beginning and 177.9MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-16 14:47:52,086 INFO L158 Benchmark]: RCFGBuilder took 4144.78ms. Allocated memory is still 269.5MB. Free memory was 177.9MB in the beginning and 199.5MB in the end (delta: -21.7MB). Peak memory consumption was 26.1MB. Max. memory is 8.0GB. [2023-12-16 14:47:52,086 INFO L158 Benchmark]: TraceAbstraction took 62754.19ms. Allocated memory was 269.5MB in the beginning and 324.0MB in the end (delta: 54.5MB). Free memory was 199.0MB in the beginning and 268.6MB in the end (delta: -69.6MB). Peak memory consumption was 162.1MB. Max. memory is 8.0GB. [2023-12-16 14:47:52,088 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 194.0MB. Free memory is still 141.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 448.09ms. Allocated memory is still 269.5MB. Free memory was 214.6MB in the beginning and 191.0MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 72.52ms. Allocated memory is still 269.5MB. Free memory was 191.0MB in the beginning and 186.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 66.42ms. Allocated memory is still 269.5MB. Free memory was 186.8MB in the beginning and 177.9MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 4144.78ms. Allocated memory is still 269.5MB. Free memory was 177.9MB in the beginning and 199.5MB in the end (delta: -21.7MB). Peak memory consumption was 26.1MB. Max. memory is 8.0GB. * TraceAbstraction took 62754.19ms. Allocated memory was 269.5MB in the beginning and 324.0MB in the end (delta: 54.5MB). Free memory was 199.0MB in the beginning and 268.6MB in the end (delta: -69.6MB). Peak memory consumption was 162.1MB. 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 constructing difference of abstraction (552states) and FLOYD_HOARE automaton (currently 12 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (86 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 148 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 62.7s, OverallIterations: 5, TraceHistogramMax: 50, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 25.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 554 SdHoareTripleChecker+Valid, 23.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 520 mSDsluCounter, 2349 SdHoareTripleChecker+Invalid, 23.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1237 mSDsCounter, 121 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1098 IncrementalHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 121 mSolverCounterUnsat, 1112 mSDtfsCounter, 1098 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2547 GetRequests, 2503 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=552occurred in iteration=4, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 29 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 7.1s SatisfiabilityAnalysisTime, 28.0s InterpolantComputationTime, 2226 NumberOfCodeBlocks, 2226 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2219 ConstructedInterpolants, 2 QuantifiedInterpolants, 11929 SizeOfPredicates, 22 NumberOfNonLiveVariables, 3561 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 33736/34300 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