/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/bitvector-loops/diamond_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 21:34:07,138 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 21:34:07,199 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 21:34:07,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 21:34:07,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 21:34:07,242 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 21:34:07,242 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 21:34:07,242 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 21:34:07,243 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 21:34:07,246 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 21:34:07,246 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 21:34:07,246 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 21:34:07,247 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 21:34:07,248 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 21:34:07,249 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 21:34:07,249 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 21:34:07,249 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 21:34:07,249 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 21:34:07,249 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 21:34:07,250 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 21:34:07,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 21:34:07,251 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 21:34:07,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 21:34:07,251 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 21:34:07,251 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 21:34:07,252 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 21:34:07,252 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 21:34:07,252 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 21:34:07,252 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 21:34:07,252 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 21:34:07,253 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 21:34:07,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 21:34:07,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 21:34:07,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 21:34:07,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:34:07,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 21:34:07,254 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 21:34:07,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 21:34:07,254 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 21:34:07,254 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 21:34:07,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 21:34:07,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 21:34:07,254 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 21:34:07,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 21:34:07,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 21:34:07,255 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 21:34:07,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 21:34:07,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 21:34:07,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 21:34:07,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 21:34:07,459 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 21:34:07,461 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 21:34:07,463 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2023-12-21 21:34:08,586 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 21:34:08,749 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 21:34:08,750 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2023-12-21 21:34:08,756 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23a34ad1f/e6cedef9c2fa4fc5a42622ce3d080efa/FLAGcfca1561b [2023-12-21 21:34:08,769 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23a34ad1f/e6cedef9c2fa4fc5a42622ce3d080efa [2023-12-21 21:34:08,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 21:34:08,773 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 21:34:08,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 21:34:08,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 21:34:08,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 21:34:08,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:34:08" (1/1) ... [2023-12-21 21:34:08,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4181e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:08, skipping insertion in model container [2023-12-21 21:34:08,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:34:08" (1/1) ... [2023-12-21 21:34:08,804 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 21:34:08,923 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c[373,386] [2023-12-21 21:34:08,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:34:08,955 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 21:34:08,966 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c[373,386] [2023-12-21 21:34:08,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:34:08,981 INFO L206 MainTranslator]: Completed translation [2023-12-21 21:34:08,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:08 WrapperNode [2023-12-21 21:34:08,982 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 21:34:08,983 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 21:34:08,983 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 21:34:08,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 21:34:08,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:08" (1/1) ... [2023-12-21 21:34:08,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:08" (1/1) ... [2023-12-21 21:34:09,012 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2023-12-21 21:34:09,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 21:34:09,013 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 21:34:09,013 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 21:34:09,013 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 21:34:09,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:08" (1/1) ... [2023-12-21 21:34:09,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:08" (1/1) ... [2023-12-21 21:34:09,032 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:08" (1/1) ... [2023-12-21 21:34:09,041 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]. [2023-12-21 21:34:09,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:08" (1/1) ... [2023-12-21 21:34:09,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:08" (1/1) ... [2023-12-21 21:34:09,044 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:08" (1/1) ... [2023-12-21 21:34:09,046 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:08" (1/1) ... [2023-12-21 21:34:09,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:08" (1/1) ... [2023-12-21 21:34:09,047 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:08" (1/1) ... [2023-12-21 21:34:09,058 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 21:34:09,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 21:34:09,059 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 21:34:09,059 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 21:34:09,060 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:08" (1/1) ... [2023-12-21 21:34:09,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:34:09,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 21:34:09,086 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) [2023-12-21 21:34:09,092 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 [2023-12-21 21:34:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 21:34:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 21:34:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 21:34:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 21:34:09,149 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 21:34:09,151 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 21:34:09,278 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 21:34:09,295 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 21:34:09,295 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 21:34:09,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:34:09 BoogieIcfgContainer [2023-12-21 21:34:09,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 21:34:09,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 21:34:09,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 21:34:09,300 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 21:34:09,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:34:08" (1/3) ... [2023-12-21 21:34:09,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3183a753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:34:09, skipping insertion in model container [2023-12-21 21:34:09,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:08" (2/3) ... [2023-12-21 21:34:09,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3183a753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:34:09, skipping insertion in model container [2023-12-21 21:34:09,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:34:09" (3/3) ... [2023-12-21 21:34:09,302 INFO L112 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2023-12-21 21:34:09,313 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 21:34:09,314 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 21:34:09,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 21:34:09,348 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;@1df1c066, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 21:34:09,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 21:34:09,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 21:34:09,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-21 21:34:09,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:34:09,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-21 21:34:09,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:34:09,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:34:09,361 INFO L85 PathProgramCache]: Analyzing trace with hash 112088733, now seen corresponding path program 1 times [2023-12-21 21:34:09,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:34:09,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796465762] [2023-12-21 21:34:09,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:34:09,370 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 [2023-12-21 21:34:09,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:34:09,372 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) [2023-12-21 21:34:09,394 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 [2023-12-21 21:34:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:34:09,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:34:09,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:34:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:34:09,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:34:09,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:34:09,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796465762] [2023-12-21 21:34:09,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796465762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:34:09,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:34:09,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:34:09,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839681457] [2023-12-21 21:34:09,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:34:09,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:34:09,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:34:09,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:34:09,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:34:09,460 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 21:34:09,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:34:09,535 INFO L93 Difference]: Finished difference Result 26 states and 41 transitions. [2023-12-21 21:34:09,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:34:09,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-21 21:34:09,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:34:09,544 INFO L225 Difference]: With dead ends: 26 [2023-12-21 21:34:09,544 INFO L226 Difference]: Without dead ends: 18 [2023-12-21 21:34:09,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:34:09,551 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:34:09,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:34:09,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-21 21:34:09,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2023-12-21 21:34:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 21:34:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2023-12-21 21:34:09,574 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 5 [2023-12-21 21:34:09,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:34:09,575 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2023-12-21 21:34:09,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 21:34:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2023-12-21 21:34:09,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 21:34:09,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:34:09,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:34:09,578 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 [2023-12-21 21:34:09,779 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 [2023-12-21 21:34:09,779 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:34:09,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:34:09,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1424693200, now seen corresponding path program 1 times [2023-12-21 21:34:09,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:34:09,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998331109] [2023-12-21 21:34:09,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:34:09,781 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 [2023-12-21 21:34:09,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:34:09,782 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) [2023-12-21 21:34:09,801 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 [2023-12-21 21:34:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:34:09,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:34:09,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:34:09,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:34:09,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:34:09,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:34:09,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998331109] [2023-12-21 21:34:09,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998331109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:34:09,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:34:09,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:34:09,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195588793] [2023-12-21 21:34:09,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:34:09,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:34:09,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:34:09,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:34:09,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:34:09,826 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 21:34:09,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:34:09,920 INFO L93 Difference]: Finished difference Result 47 states and 77 transitions. [2023-12-21 21:34:09,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:34:09,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-21 21:34:09,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:34:09,921 INFO L225 Difference]: With dead ends: 47 [2023-12-21 21:34:09,922 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 21:34:09,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:34:09,924 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:34:09,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:34:09,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 21:34:09,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2023-12-21 21:34:09,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 21:34:09,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2023-12-21 21:34:09,934 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 16 [2023-12-21 21:34:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:34:09,935 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2023-12-21 21:34:09,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 21:34:09,935 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2023-12-21 21:34:09,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 21:34:09,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:34:09,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:34:09,947 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 [2023-12-21 21:34:10,137 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 [2023-12-21 21:34:10,139 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:34:10,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:34:10,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1481951502, now seen corresponding path program 1 times [2023-12-21 21:34:10,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:34:10,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828034428] [2023-12-21 21:34:10,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:34:10,140 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 [2023-12-21 21:34:10,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:34:10,141 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) [2023-12-21 21:34:10,144 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 [2023-12-21 21:34:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:34:10,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:34:10,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:34:10,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:34:10,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:34:10,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:34:10,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828034428] [2023-12-21 21:34:10,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828034428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:34:10,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:34:10,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:34:10,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861068225] [2023-12-21 21:34:10,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:34:10,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:34:10,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:34:10,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:34:10,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:34:10,224 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 21:34:10,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:34:10,275 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2023-12-21 21:34:10,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:34:10,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-21 21:34:10,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:34:10,276 INFO L225 Difference]: With dead ends: 48 [2023-12-21 21:34:10,276 INFO L226 Difference]: Without dead ends: 33 [2023-12-21 21:34:10,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:34:10,277 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:34:10,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 20 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:34:10,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-21 21:34:10,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2023-12-21 21:34:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 21:34:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-12-21 21:34:10,281 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 16 [2023-12-21 21:34:10,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:34:10,281 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-12-21 21:34:10,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 21:34:10,282 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-12-21 21:34:10,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 21:34:10,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:34:10,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:34:10,300 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 [2023-12-21 21:34:10,501 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 [2023-12-21 21:34:10,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:34:10,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:34:10,505 INFO L85 PathProgramCache]: Analyzing trace with hash 202269940, now seen corresponding path program 1 times [2023-12-21 21:34:10,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:34:10,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331451934] [2023-12-21 21:34:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:34:10,506 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 [2023-12-21 21:34:10,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:34:10,508 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) [2023-12-21 21:34:10,521 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 [2023-12-21 21:34:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-21 21:34:10,556 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-21 21:34:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-21 21:34:10,598 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-12-21 21:34:10,599 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-21 21:34:10,599 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 21:34:10,607 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 [2023-12-21 21:34:10,803 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 [2023-12-21 21:34:10,806 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-21 21:34:10,808 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 21:34:10,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 09:34:10 BoogieIcfgContainer [2023-12-21 21:34:10,830 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 21:34:10,830 INFO L158 Benchmark]: Toolchain (without parser) took 2057.74ms. Allocated memory is still 261.1MB. Free memory was 211.0MB in the beginning and 211.8MB in the end (delta: -711.5kB). Peak memory consumption was 650.5kB. Max. memory is 8.0GB. [2023-12-21 21:34:10,833 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 179.3MB. Free memory is still 131.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 21:34:10,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.05ms. Allocated memory is still 261.1MB. Free memory was 210.8MB in the beginning and 199.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 21:34:10,834 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.07ms. Allocated memory is still 261.1MB. Free memory was 199.3MB in the beginning and 197.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 21:34:10,834 INFO L158 Benchmark]: Boogie Preprocessor took 45.37ms. Allocated memory is still 261.1MB. Free memory was 197.9MB in the beginning and 195.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 21:34:10,835 INFO L158 Benchmark]: RCFGBuilder took 236.88ms. Allocated memory is still 261.1MB. Free memory was 195.8MB in the beginning and 182.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 21:34:10,836 INFO L158 Benchmark]: TraceAbstraction took 1532.50ms. Allocated memory is still 261.1MB. Free memory was 181.7MB in the beginning and 211.8MB in the end (delta: -30.0MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 21:34:10,839 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 179.3MB. Free memory is still 131.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.05ms. Allocated memory is still 261.1MB. Free memory was 210.8MB in the beginning and 199.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.07ms. Allocated memory is still 261.1MB. Free memory was 199.3MB in the beginning and 197.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.37ms. Allocated memory is still 261.1MB. Free memory was 197.9MB in the beginning and 195.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 236.88ms. Allocated memory is still 261.1MB. Free memory was 195.8MB in the beginning and 182.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1532.50ms. Allocated memory is still 261.1MB. Free memory was 181.7MB in the beginning and 211.8MB in the end (delta: -30.0MB). There was no memory consumed. 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 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = 0; [L15] unsigned int y = __VERIFIER_nondet_uint(); [L17] COND TRUE x < 99 VAL [x=0] [L18] COND FALSE !(y % 2 == 0) [L19] x += 2 VAL [x=2, y=1] [L21] COND FALSE !(y % 2 == 0) [L22] x -= 2 VAL [x=0, y=1] [L24] COND FALSE !(y % 2 == 0) [L25] x += 2 VAL [x=2, y=1] [L27] COND FALSE !(y % 2 == 0) [L28] x -= 2 VAL [x=0, y=1] [L30] COND FALSE !(y % 2 == 0) [L31] x += 2 VAL [x=2, y=1] [L33] COND FALSE !(y % 2 == 0) [L34] x -= 4 VAL [x=4294967294, y=1] [L36] COND FALSE !(y % 2 == 0) [L37] x += 4 VAL [x=2, y=1] [L39] COND FALSE !(y % 2 == 0) [L40] x += 2 VAL [x=4, y=1] [L42] COND FALSE !(y % 2 == 0) [L43] x -= 4 VAL [x=0, y=1] [L45] COND FALSE !(y % 2 == 0) [L46] x -= 4 VAL [x=4294967292, y=1] [L17] COND FALSE !(x < 99) VAL [x=4294967292, y=1] [L49] CALL __VERIFIER_assert((x % 2) == (y % 2)) [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 67 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 77 IncrementalHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 56 mSDtfsCounter, 77 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 75 SizeOfPredicates, 0 NumberOfNonLiveVariables, 96 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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 proved your program to be incorrect! [2023-12-21 21:34:10,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...