/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/loop-invariants/mod4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 23:57:07,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 23:57:07,265 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 23:57:07,269 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 23:57:07,270 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 23:57:07,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 23:57:07,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 23:57:07,297 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 23:57:07,297 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 23:57:07,301 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 23:57:07,301 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 23:57:07,302 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 23:57:07,302 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 23:57:07,303 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 23:57:07,303 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 23:57:07,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 23:57:07,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 23:57:07,304 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 23:57:07,305 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 23:57:07,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 23:57:07,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 23:57:07,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 23:57:07,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 23:57:07,307 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 23:57:07,307 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 23:57:07,307 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 23:57:07,307 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 23:57:07,307 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 23:57:07,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 23:57:07,308 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 23:57:07,309 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 23:57:07,309 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 23:57:07,309 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 23:57:07,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 23:57:07,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:57:07,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 23:57:07,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 23:57:07,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 23:57:07,310 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 23:57:07,310 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 23:57:07,310 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 23:57:07,310 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 23:57:07,310 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 23:57:07,310 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 23:57:07,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 23:57:07,311 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 23:57:07,311 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 23:57:07,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 23:57:07,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 23:57:07,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 23:57:07,554 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 23:57:07,555 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 23:57:07,556 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/mod4.c [2023-12-24 23:57:08,692 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 23:57:08,854 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 23:57:08,854 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/mod4.c [2023-12-24 23:57:08,859 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/955c46681/19713f3faf7a4f0784da3004f0be81b6/FLAGa87767b3b [2023-12-24 23:57:08,871 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/955c46681/19713f3faf7a4f0784da3004f0be81b6 [2023-12-24 23:57:08,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 23:57:08,874 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 23:57:08,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 23:57:08,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 23:57:08,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 23:57:08,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:57:08" (1/1) ... [2023-12-24 23:57:08,881 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3630f448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:08, skipping insertion in model container [2023-12-24 23:57:08,881 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:57:08" (1/1) ... [2023-12-24 23:57:08,895 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 23:57:09,017 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/mod4.c[580,593] [2023-12-24 23:57:09,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:57:09,043 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 23:57:09,052 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/mod4.c[580,593] [2023-12-24 23:57:09,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:57:09,063 INFO L206 MainTranslator]: Completed translation [2023-12-24 23:57:09,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:09 WrapperNode [2023-12-24 23:57:09,064 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 23:57:09,065 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 23:57:09,065 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 23:57:09,065 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 23:57:09,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:09" (1/1) ... [2023-12-24 23:57:09,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:09" (1/1) ... [2023-12-24 23:57:09,099 INFO L138 Inliner]: procedures = 13, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-12-24 23:57:09,100 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 23:57:09,100 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 23:57:09,100 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 23:57:09,100 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 23:57:09,107 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:09" (1/1) ... [2023-12-24 23:57:09,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:09" (1/1) ... [2023-12-24 23:57:09,108 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:09" (1/1) ... [2023-12-24 23:57:09,117 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2023-12-24 23:57:09,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:09" (1/1) ... [2023-12-24 23:57:09,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:09" (1/1) ... [2023-12-24 23:57:09,120 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:09" (1/1) ... [2023-12-24 23:57:09,122 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:09" (1/1) ... [2023-12-24 23:57:09,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:09" (1/1) ... [2023-12-24 23:57:09,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:09" (1/1) ... [2023-12-24 23:57:09,125 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 23:57:09,126 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 23:57:09,126 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 23:57:09,126 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 23:57:09,127 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:09" (1/1) ... [2023-12-24 23:57:09,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:57:09,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 23:57:09,157 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) [2023-12-24 23:57:09,167 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 [2023-12-24 23:57:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 23:57:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 23:57:09,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 23:57:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 23:57:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 23:57:09,232 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 23:57:09,234 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 23:57:09,350 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 23:57:09,376 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 23:57:09,376 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 23:57:09,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:57:09 BoogieIcfgContainer [2023-12-24 23:57:09,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 23:57:09,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 23:57:09,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 23:57:09,381 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 23:57:09,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 11:57:08" (1/3) ... [2023-12-24 23:57:09,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4b9f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:57:09, skipping insertion in model container [2023-12-24 23:57:09,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:57:09" (2/3) ... [2023-12-24 23:57:09,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4b9f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:57:09, skipping insertion in model container [2023-12-24 23:57:09,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:57:09" (3/3) ... [2023-12-24 23:57:09,383 INFO L112 eAbstractionObserver]: Analyzing ICFG mod4.c [2023-12-24 23:57:09,397 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 23:57:09,397 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 23:57:09,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 23:57:09,436 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;@17572d01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 23:57:09,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 23:57:09,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2023-12-24 23:57:09,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-24 23:57:09,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:09,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-24 23:57:09,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:09,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:09,447 INFO L85 PathProgramCache]: Analyzing trace with hash 58614883, now seen corresponding path program 1 times [2023-12-24 23:57:09,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:09,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900807589] [2023-12-24 23:57:09,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:57:09,456 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 [2023-12-24 23:57:09,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:09,460 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) [2023-12-24 23:57:09,463 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 [2023-12-24 23:57:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:57:09,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 23:57:09,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:57:09,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:57:09,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:09,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900807589] [2023-12-24 23:57:09,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900807589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:57:09,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:57:09,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 23:57:09,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484420650] [2023-12-24 23:57:09,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:57:09,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 23:57:09,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:09,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 23:57:09,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 23:57:09,606 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 2 states, 2 states have (on average 2.5) 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) [2023-12-24 23:57:09,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:09,639 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2023-12-24 23:57:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 23:57:09,641 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) 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 [2023-12-24 23:57:09,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:09,647 INFO L225 Difference]: With dead ends: 15 [2023-12-24 23:57:09,647 INFO L226 Difference]: Without dead ends: 7 [2023-12-24 23:57:09,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 23:57:09,652 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:09,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:57:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-12-24 23:57:09,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-12-24 23:57:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-12-24 23:57:09,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-12-24 23:57:09,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2023-12-24 23:57:09,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:09,679 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-12-24 23:57:09,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) 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) [2023-12-24 23:57:09,680 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-12-24 23:57:09,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-24 23:57:09,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:09,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-24 23:57:09,688 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 [2023-12-24 23:57:09,882 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 [2023-12-24 23:57:09,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:09,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:09,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1810415056, now seen corresponding path program 1 times [2023-12-24 23:57:09,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:09,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995103792] [2023-12-24 23:57:09,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:57:09,885 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 [2023-12-24 23:57:09,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:09,886 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) [2023-12-24 23:57:09,887 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 [2023-12-24 23:57:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:57:09,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 23:57:09,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:57:09,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:57:09,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:09,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995103792] [2023-12-24 23:57:09,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995103792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:57:09,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:57:09,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 23:57:09,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243262733] [2023-12-24 23:57:09,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:57:09,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 23:57:09,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:09,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 23:57:09,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 23:57:09,956 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-12-24 23:57:09,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:09,977 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2023-12-24 23:57:09,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 23:57:09,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-12-24 23:57:09,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:09,978 INFO L225 Difference]: With dead ends: 13 [2023-12-24 23:57:09,978 INFO L226 Difference]: Without dead ends: 9 [2023-12-24 23:57:09,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 23:57:09,980 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:09,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:57:09,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-24 23:57:09,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-12-24 23:57:09,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2023-12-24 23:57:09,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-12-24 23:57:09,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2023-12-24 23:57:09,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:09,984 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-12-24 23:57:09,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-12-24 23:57:09,984 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-12-24 23:57:09,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-24 23:57:09,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:57:09,985 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-12-24 23:57:09,988 INFO L552 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)] Ended with exit code 0 [2023-12-24 23:57:10,187 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 [2023-12-24 23:57:10,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:57:10,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:57:10,188 INFO L85 PathProgramCache]: Analyzing trace with hash 395788235, now seen corresponding path program 1 times [2023-12-24 23:57:10,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:57:10,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909454021] [2023-12-24 23:57:10,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:57:10,189 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 [2023-12-24 23:57:10,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:57:10,193 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) [2023-12-24 23:57:10,194 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 [2023-12-24 23:57:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:57:10,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 23:57:10,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:57:10,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:57:10,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:57:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 23:57:10,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:57:10,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909454021] [2023-12-24 23:57:10,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909454021] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 23:57:10,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 23:57:10,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-24 23:57:10,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830901539] [2023-12-24 23:57:10,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:57:10,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 23:57:10,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:57:10,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 23:57:10,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-24 23:57:10,348 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-12-24 23:57:10,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:57:10,368 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2023-12-24 23:57:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 23:57:10,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 8 [2023-12-24 23:57:10,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:57:10,368 INFO L225 Difference]: With dead ends: 9 [2023-12-24 23:57:10,369 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 23:57:10,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-24 23:57:10,373 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:57:10,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:57:10,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 23:57:10,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 23:57:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-12-24 23:57:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 23:57:10,376 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2023-12-24 23:57:10,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:57:10,376 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 23:57:10,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-12-24 23:57:10,376 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 23:57:10,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 23:57:10,379 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 23:57:10,387 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 [2023-12-24 23:57:10,584 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 [2023-12-24 23:57:10,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 23:57:10,598 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-24 23:57:10,599 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 15) no Hoare annotation was computed. [2023-12-24 23:57:10,599 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 17) no Hoare annotation was computed. [2023-12-24 23:57:10,599 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-24 23:57:10,599 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-12-24 23:57:10,599 INFO L899 garLoopResultBuilder]: For program point L20-1(lines 20 22) no Hoare annotation was computed. [2023-12-24 23:57:10,599 INFO L895 garLoopResultBuilder]: At program point L20-3(lines 20 22) the Hoare annotation is: (= (_ bv0 32) (bvurem |ULTIMATE.start_main_~x~0#1| (_ bv4 32))) [2023-12-24 23:57:10,600 INFO L899 garLoopResultBuilder]: For program point L20-4(lines 20 22) no Hoare annotation was computed. [2023-12-24 23:57:10,600 INFO L899 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2023-12-24 23:57:10,602 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-24 23:57:10,608 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 23:57:10,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 11:57:10 BoogieIcfgContainer [2023-12-24 23:57:10,623 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 23:57:10,623 INFO L158 Benchmark]: Toolchain (without parser) took 1749.18ms. Allocated memory is still 282.1MB. Free memory was 232.5MB in the beginning and 243.1MB in the end (delta: -10.6MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 23:57:10,624 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 197.1MB. Free memory is still 148.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 23:57:10,624 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.76ms. Allocated memory is still 282.1MB. Free memory was 232.1MB in the beginning and 221.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-24 23:57:10,624 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.05ms. Allocated memory is still 282.1MB. Free memory was 221.2MB in the beginning and 220.0MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 23:57:10,624 INFO L158 Benchmark]: Boogie Preprocessor took 25.13ms. Allocated memory is still 282.1MB. Free memory was 220.0MB in the beginning and 218.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 23:57:10,625 INFO L158 Benchmark]: RCFGBuilder took 250.70ms. Allocated memory is still 282.1MB. Free memory was 218.0MB in the beginning and 206.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 23:57:10,625 INFO L158 Benchmark]: TraceAbstraction took 1244.84ms. Allocated memory is still 282.1MB. Free memory was 205.8MB in the beginning and 243.1MB in the end (delta: -37.2MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 23:57:10,626 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 197.1MB. Free memory is still 148.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 188.76ms. Allocated memory is still 282.1MB. Free memory was 232.1MB in the beginning and 221.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.05ms. Allocated memory is still 282.1MB. Free memory was 221.2MB in the beginning and 220.0MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.13ms. Allocated memory is still 282.1MB. Free memory was 220.0MB in the beginning and 218.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 250.70ms. Allocated memory is still 282.1MB. Free memory was 218.0MB in the beginning and 206.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1244.84ms. Allocated memory is still 282.1MB. Free memory was 205.8MB in the beginning and 243.1MB in the end (delta: -37.2MB). 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 - PositiveResult [Line: 14]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 5 HoareAnnotationTreeSize, 1 FormulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FormulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 66 SizeOfPredicates, 4 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (0 == (x % 4)) RESULT: Ultimate proved your program to be correct! [2023-12-24 23:57:10,642 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...