/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_fillercode_fillercodesize_ps-cn-100_file-84.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 10:51:17,076 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 10:51:17,117 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 10:51:17,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 10:51:17,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 10:51:17,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 10:51:17,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 10:51:17,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 10:51:17,145 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 10:51:17,145 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 10:51:17,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 10:51:17,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 10:51:17,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 10:51:17,146 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 10:51:17,147 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 10:51:17,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 10:51:17,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 10:51:17,148 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 10:51:17,154 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 10:51:17,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 10:51:17,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 10:51:17,159 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 10:51:17,159 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 10:51:17,160 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 10:51:17,161 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 10:51:17,161 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 10:51:17,161 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 10:51:17,161 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 10:51:17,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 10:51:17,162 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 10:51:17,163 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 10:51:17,163 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 10:51:17,163 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 10:51:17,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 10:51:17,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:51:17,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 10:51:17,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 10:51:17,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 10:51:17,164 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 10:51:17,164 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 10:51:17,164 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 10:51:17,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 10:51:17,164 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 10:51:17,164 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 10:51:17,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 10:51:17,165 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 10:51:17,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 10:51:17,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 10:51:17,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 10:51:17,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 10:51:17,395 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 10:51:17,397 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 10:51:17,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-84.i [2023-12-16 10:51:18,547 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 10:51:18,720 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 10:51:18,720 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-84.i [2023-12-16 10:51:18,732 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f54c7f3/4a1e1ef75a504dacbe0829dda3d1d8cf/FLAGbd23ed10d [2023-12-16 10:51:18,742 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f54c7f3/4a1e1ef75a504dacbe0829dda3d1d8cf [2023-12-16 10:51:18,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 10:51:18,745 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 10:51:18,746 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 10:51:18,746 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 10:51:18,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 10:51:18,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:51:18" (1/1) ... [2023-12-16 10:51:18,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cd493d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:18, skipping insertion in model container [2023-12-16 10:51:18,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:51:18" (1/1) ... [2023-12-16 10:51:18,776 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 10:51:18,899 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_fillercode_fillercodesize_ps-cn-100_file-84.i[916,929] [2023-12-16 10:51:18,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:51:19,012 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 10:51:19,020 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_fillercode_fillercodesize_ps-cn-100_file-84.i[916,929] [2023-12-16 10:51:19,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:51:19,069 INFO L206 MainTranslator]: Completed translation [2023-12-16 10:51:19,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:19 WrapperNode [2023-12-16 10:51:19,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 10:51:19,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 10:51:19,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 10:51:19,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 10:51:19,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:19" (1/1) ... [2023-12-16 10:51:19,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:19" (1/1) ... [2023-12-16 10:51:19,123 INFO L138 Inliner]: procedures = 27, calls = 78, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 324 [2023-12-16 10:51:19,123 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 10:51:19,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 10:51:19,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 10:51:19,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 10:51:19,144 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:19" (1/1) ... [2023-12-16 10:51:19,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:19" (1/1) ... [2023-12-16 10:51:19,156 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:19" (1/1) ... [2023-12-16 10:51:19,177 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 10:51:19,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:19" (1/1) ... [2023-12-16 10:51:19,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:19" (1/1) ... [2023-12-16 10:51:19,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:19" (1/1) ... [2023-12-16 10:51:19,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:19" (1/1) ... [2023-12-16 10:51:19,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:19" (1/1) ... [2023-12-16 10:51:19,202 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:19" (1/1) ... [2023-12-16 10:51:19,205 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 10:51:19,206 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 10:51:19,206 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 10:51:19,206 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 10:51:19,220 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:19" (1/1) ... [2023-12-16 10:51:19,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:51:19,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 10:51:19,306 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 10:51:19,345 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 10:51:19,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 10:51:19,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 10:51:19,361 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 10:51:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 10:51:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 10:51:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 10:51:19,453 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 10:51:19,454 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 10:51:26,115 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 10:51:26,166 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 10:51:26,167 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 10:51:26,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:51:26 BoogieIcfgContainer [2023-12-16 10:51:26,167 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 10:51:26,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 10:51:26,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 10:51:26,172 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 10:51:26,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 10:51:18" (1/3) ... [2023-12-16 10:51:26,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ae1daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:51:26, skipping insertion in model container [2023-12-16 10:51:26,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:19" (2/3) ... [2023-12-16 10:51:26,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ae1daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:51:26, skipping insertion in model container [2023-12-16 10:51:26,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:51:26" (3/3) ... [2023-12-16 10:51:26,174 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-84.i [2023-12-16 10:51:26,192 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 10:51:26,193 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 10:51:26,237 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 10:51:26,243 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;@35cfec33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 10:51:26,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 10:51:26,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 76 states have (on average 1.4078947368421053) internal successors, (107), 77 states have internal predecessors, (107), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-16 10:51:26,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-16 10:51:26,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:51:26,270 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:51:26,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:51:26,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:51:26,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1850809984, now seen corresponding path program 1 times [2023-12-16 10:51:26,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:51:26,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932112306] [2023-12-16 10:51:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:51:26,293 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 10:51:26,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:51:26,308 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 10:51:26,355 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 10:51:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:51:26,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 10:51:26,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:51:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3324 proven. 0 refuted. 0 times theorem prover too weak. 4996 trivial. 0 not checked. [2023-12-16 10:51:27,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:51:27,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:51:27,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932112306] [2023-12-16 10:51:27,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932112306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:51:27,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:51:27,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 10:51:27,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814384764] [2023-12-16 10:51:27,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:51:27,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 10:51:27,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:51:27,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 10:51:27,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 10:51:27,058 INFO L87 Difference]: Start difference. First operand has 144 states, 76 states have (on average 1.4078947368421053) internal successors, (107), 77 states have internal predecessors, (107), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-16 10:51:27,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:51:27,165 INFO L93 Difference]: Finished difference Result 285 states and 537 transitions. [2023-12-16 10:51:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 10:51:27,176 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 387 [2023-12-16 10:51:27,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:51:27,185 INFO L225 Difference]: With dead ends: 285 [2023-12-16 10:51:27,185 INFO L226 Difference]: Without dead ends: 142 [2023-12-16 10:51:27,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 386 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 10:51:27,192 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 10:51:27,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 10:51:27,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-16 10:51:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2023-12-16 10:51:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 75 states have (on average 1.36) internal successors, (102), 75 states have internal predecessors, (102), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-16 10:51:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 232 transitions. [2023-12-16 10:51:27,250 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 232 transitions. Word has length 387 [2023-12-16 10:51:27,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:51:27,252 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 232 transitions. [2023-12-16 10:51:27,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-16 10:51:27,252 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 232 transitions. [2023-12-16 10:51:27,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-16 10:51:27,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:51:27,266 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:51:27,283 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 10:51:27,483 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 10:51:27,484 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:51:27,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:51:27,485 INFO L85 PathProgramCache]: Analyzing trace with hash -485748478, now seen corresponding path program 1 times [2023-12-16 10:51:27,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:51:27,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342816935] [2023-12-16 10:51:27,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:51:27,487 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 10:51:27,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:51:27,490 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 10:51:27,492 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 10:51:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:51:28,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 10:51:28,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:51:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-16 10:51:28,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:51:28,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:51:28,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342816935] [2023-12-16 10:51:28,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342816935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:51:28,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:51:28,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 10:51:28,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990924047] [2023-12-16 10:51:28,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:51:28,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 10:51:28,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:51:28,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 10:51:28,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 10:51:28,124 INFO L87 Difference]: Start difference. First operand 142 states and 232 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-16 10:51:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:51:28,237 INFO L93 Difference]: Finished difference Result 283 states and 463 transitions. [2023-12-16 10:51:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 10:51:28,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 387 [2023-12-16 10:51:28,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:51:28,258 INFO L225 Difference]: With dead ends: 283 [2023-12-16 10:51:28,258 INFO L226 Difference]: Without dead ends: 142 [2023-12-16 10:51:28,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 385 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 10:51:28,260 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 229 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 10:51:28,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 227 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 10:51:28,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-16 10:51:28,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2023-12-16 10:51:28,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 75 states have internal predecessors, (101), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-16 10:51:28,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 231 transitions. [2023-12-16 10:51:28,280 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 231 transitions. Word has length 387 [2023-12-16 10:51:28,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:51:28,283 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 231 transitions. [2023-12-16 10:51:28,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-16 10:51:28,283 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 231 transitions. [2023-12-16 10:51:28,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-16 10:51:28,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:51:28,288 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:51:28,320 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 10:51:28,505 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 10:51:28,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:51:28,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:51:28,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1289258884, now seen corresponding path program 1 times [2023-12-16 10:51:28,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:51:28,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050337160] [2023-12-16 10:51:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:51:28,511 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 10:51:28,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:51:28,522 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 10:51:28,523 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 10:51:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:51:29,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 10:51:29,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:51:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3522 proven. 135 refuted. 0 times theorem prover too weak. 4663 trivial. 0 not checked. [2023-12-16 10:51:30,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:51:31,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:51:31,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050337160] [2023-12-16 10:51:31,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050337160] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 10:51:31,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1523375836] [2023-12-16 10:51:31,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:51:31,432 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 10:51:31,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 10:51:31,474 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 10:51:31,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-16 10:51:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:51:33,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 10:51:33,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:51:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3522 proven. 135 refuted. 0 times theorem prover too weak. 4663 trivial. 0 not checked. [2023-12-16 10:51:34,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:51:35,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1523375836] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 10:51:35,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:51:35,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-12-16 10:51:35,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107604318] [2023-12-16 10:51:35,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:51:35,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 10:51:35,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:51:35,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 10:51:35,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-16 10:51:35,076 INFO L87 Difference]: Start difference. First operand 142 states and 231 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-16 10:51:37,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:51:37,915 INFO L93 Difference]: Finished difference Result 435 states and 699 transitions. [2023-12-16 10:51:37,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 10:51:37,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 387 [2023-12-16 10:51:37,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:51:37,919 INFO L225 Difference]: With dead ends: 435 [2023-12-16 10:51:37,919 INFO L226 Difference]: Without dead ends: 294 [2023-12-16 10:51:37,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 838 GetRequests, 815 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2023-12-16 10:51:37,920 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 233 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 10:51:37,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1265 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 10:51:37,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-16 10:51:37,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 148. [2023-12-16 10:51:37,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 80 states have (on average 1.325) internal successors, (106), 80 states have internal predecessors, (106), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-16 10:51:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 236 transitions. [2023-12-16 10:51:37,949 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 236 transitions. Word has length 387 [2023-12-16 10:51:37,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:51:37,950 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 236 transitions. [2023-12-16 10:51:37,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-16 10:51:37,950 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 236 transitions. [2023-12-16 10:51:37,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-16 10:51:37,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:51:37,952 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:51:37,976 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 10:51:38,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-16 10:51:38,375 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 10:51:38,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:51:38,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:51:38,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1289199302, now seen corresponding path program 1 times [2023-12-16 10:51:38,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:51:38,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528417813] [2023-12-16 10:51:38,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:51:38,378 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 10:51:38,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:51:38,379 INFO L229 MonitoredProcess]: Starting monitored process 6 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 10:51:38,381 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 (6)] Waiting until timeout for monitored process [2023-12-16 10:51:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:51:39,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-16 10:51:39,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 10:52:22,400 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 10:52:22,401 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 (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 10:52:23,472 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 (6)] Forceful destruction successful, exit code 0 [2023-12-16 10:52:23,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0