/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/recursive/Ackermann01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:05:14,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:05:14,176 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 06:05:14,180 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:05:14,180 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:05:14,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:05:14,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:05:14,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:05:14,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:05:14,200 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:05:14,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:05:14,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:05:14,201 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:05:14,201 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:05:14,202 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:05:14,202 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:05:14,202 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:05:14,203 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:05:14,203 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:05:14,203 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:05:14,204 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:05:14,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:05:14,204 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:05:14,205 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:05:14,205 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:05:14,205 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:05:14,206 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:05:14,206 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:05:14,206 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:05:14,206 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:05:14,207 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:05:14,207 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:05:14,207 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:05:14,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:05:14,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:05:14,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:05:14,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:05:14,209 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:05:14,209 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:05:14,209 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:14,210 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:05:14,210 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:05:14,210 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:05:14,210 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:05:14,211 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:05:14,211 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:05:14,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:05:14,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:05:14,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:05:14,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:05:14,440 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:05:14,441 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:05:14,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann01-2.c [2023-12-25 06:05:15,771 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:05:15,959 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:05:15,960 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Ackermann01-2.c [2023-12-25 06:05:15,966 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30e05f9eb/a84dd7cd2e7c4846b02c91882c2b816a/FLAGc5b9a80b0 [2023-12-25 06:05:15,978 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30e05f9eb/a84dd7cd2e7c4846b02c91882c2b816a [2023-12-25 06:05:15,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:05:15,982 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:05:15,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:05:15,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:05:15,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:05:15,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:05:15" (1/1) ... [2023-12-25 06:05:15,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0901f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:15, skipping insertion in model container [2023-12-25 06:05:15,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:05:15" (1/1) ... [2023-12-25 06:05:16,008 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:05:16,145 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Ackermann01-2.c[1234,1247] [2023-12-25 06:05:16,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:05:16,163 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:05:16,175 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Ackermann01-2.c[1234,1247] [2023-12-25 06:05:16,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:05:16,188 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:05:16,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:16 WrapperNode [2023-12-25 06:05:16,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:05:16,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:05:16,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:05:16,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:05:16,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:16" (1/1) ... [2023-12-25 06:05:16,202 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:16" (1/1) ... [2023-12-25 06:05:16,217 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2023-12-25 06:05:16,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:05:16,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:05:16,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:05:16,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:05:16,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:16" (1/1) ... [2023-12-25 06:05:16,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:16" (1/1) ... [2023-12-25 06:05:16,228 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:16" (1/1) ... [2023-12-25 06:05:16,237 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]. [2023-12-25 06:05:16,237 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:16" (1/1) ... [2023-12-25 06:05:16,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:16" (1/1) ... [2023-12-25 06:05:16,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:16" (1/1) ... [2023-12-25 06:05:16,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:16" (1/1) ... [2023-12-25 06:05:16,245 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:16" (1/1) ... [2023-12-25 06:05:16,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:16" (1/1) ... [2023-12-25 06:05:16,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:05:16,248 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:05:16,248 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:05:16,248 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:05:16,249 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:16" (1/1) ... [2023-12-25 06:05:16,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:05:16,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:05:16,289 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) [2023-12-25 06:05:16,315 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 [2023-12-25 06:05:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:05:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:05:16,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:05:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:05:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2023-12-25 06:05:16,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2023-12-25 06:05:16,391 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:05:16,395 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:05:16,580 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:05:16,617 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:05:16,617 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 06:05:16,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:05:16 BoogieIcfgContainer [2023-12-25 06:05:16,618 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:05:16,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:05:16,620 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:05:16,623 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:05:16,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:05:15" (1/3) ... [2023-12-25 06:05:16,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a394e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:05:16, skipping insertion in model container [2023-12-25 06:05:16,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:16" (2/3) ... [2023-12-25 06:05:16,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a394e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:05:16, skipping insertion in model container [2023-12-25 06:05:16,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:05:16" (3/3) ... [2023-12-25 06:05:16,627 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2023-12-25 06:05:16,644 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:05:16,644 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:05:16,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:05:16,702 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;@54bd8104, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:05:16,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:05:16,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 06:05:16,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-25 06:05:16,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:16,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:16,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:16,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:16,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1592058167, now seen corresponding path program 1 times [2023-12-25 06:05:16,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:16,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600857375] [2023-12-25 06:05:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:16,735 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 [2023-12-25 06:05:16,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:16,738 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) [2023-12-25 06:05:16,767 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 [2023-12-25 06:05:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:16,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:05:16,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:05:17,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:05:17,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:17,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600857375] [2023-12-25 06:05:17,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600857375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:05:17,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:05:17,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 06:05:17,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649048137] [2023-12-25 06:05:17,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:05:17,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 06:05:17,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:17,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 06:05:17,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 06:05:17,073 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:05:17,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:17,334 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2023-12-25 06:05:17,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:05:17,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-25 06:05:17,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:17,343 INFO L225 Difference]: With dead ends: 30 [2023-12-25 06:05:17,343 INFO L226 Difference]: Without dead ends: 20 [2023-12-25 06:05:17,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:05:17,352 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:17,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 55 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:05:17,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-25 06:05:17,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-25 06:05:17,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-25 06:05:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2023-12-25 06:05:17,385 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 11 [2023-12-25 06:05:17,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:17,385 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-12-25 06:05:17,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:05:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2023-12-25 06:05:17,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-25 06:05:17,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:17,387 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:17,392 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 [2023-12-25 06:05:17,590 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 [2023-12-25 06:05:17,590 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:17,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:17,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1453353420, now seen corresponding path program 1 times [2023-12-25 06:05:17,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:17,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101766265] [2023-12-25 06:05:17,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:17,592 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 [2023-12-25 06:05:17,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:17,594 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) [2023-12-25 06:05:17,596 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 [2023-12-25 06:05:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:17,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:05:17,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 06:05:17,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 06:05:17,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:17,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101766265] [2023-12-25 06:05:17,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101766265] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 06:05:17,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 06:05:17,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-12-25 06:05:17,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571123363] [2023-12-25 06:05:17,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:05:17,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 06:05:17,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:17,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 06:05:17,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:05:17,974 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-25 06:05:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:18,159 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2023-12-25 06:05:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:05:18,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-12-25 06:05:18,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:18,161 INFO L225 Difference]: With dead ends: 27 [2023-12-25 06:05:18,161 INFO L226 Difference]: Without dead ends: 23 [2023-12-25 06:05:18,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:05:18,163 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:18,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 53 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:18,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-25 06:05:18,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2023-12-25 06:05:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-25 06:05:18,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-12-25 06:05:18,170 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 18 [2023-12-25 06:05:18,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:18,171 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-12-25 06:05:18,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-25 06:05:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-12-25 06:05:18,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-25 06:05:18,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:18,172 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:18,176 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 [2023-12-25 06:05:18,375 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 [2023-12-25 06:05:18,376 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:18,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:18,377 INFO L85 PathProgramCache]: Analyzing trace with hash 828036087, now seen corresponding path program 1 times [2023-12-25 06:05:18,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:18,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761889533] [2023-12-25 06:05:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:18,377 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 [2023-12-25 06:05:18,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:18,379 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) [2023-12-25 06:05:18,382 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 [2023-12-25 06:05:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:18,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:05:18,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 06:05:18,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:05:18,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:18,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761889533] [2023-12-25 06:05:18,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761889533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:05:18,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:05:18,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:05:18,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482607103] [2023-12-25 06:05:18,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:05:18,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:05:18,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:18,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:05:18,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:05:18,479 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 06:05:18,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:18,559 INFO L93 Difference]: Finished difference Result 40 states and 57 transitions. [2023-12-25 06:05:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:05:18,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2023-12-25 06:05:18,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:18,562 INFO L225 Difference]: With dead ends: 40 [2023-12-25 06:05:18,563 INFO L226 Difference]: Without dead ends: 23 [2023-12-25 06:05:18,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 06:05:18,567 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:18,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 38 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:05:18,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-25 06:05:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-25 06:05:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-25 06:05:18,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2023-12-25 06:05:18,581 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 23 [2023-12-25 06:05:18,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:18,582 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2023-12-25 06:05:18,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 06:05:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2023-12-25 06:05:18,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-25 06:05:18,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:18,586 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:18,591 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 [2023-12-25 06:05:18,788 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 [2023-12-25 06:05:18,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:18,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:18,789 INFO L85 PathProgramCache]: Analyzing trace with hash 826114414, now seen corresponding path program 1 times [2023-12-25 06:05:18,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:18,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412497420] [2023-12-25 06:05:18,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:18,790 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 [2023-12-25 06:05:18,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:18,792 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) [2023-12-25 06:05:18,807 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 [2023-12-25 06:05:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:18,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 06:05:18,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-25 06:05:18,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 06:05:19,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:19,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412497420] [2023-12-25 06:05:19,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412497420] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:19,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:19,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2023-12-25 06:05:19,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220889442] [2023-12-25 06:05:19,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:19,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-25 06:05:19,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:19,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-25 06:05:19,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2023-12-25 06:05:19,476 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 22 states, 20 states have (on average 1.45) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (5), 1 states have call predecessors, (5), 7 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-25 06:05:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:20,860 INFO L93 Difference]: Finished difference Result 62 states and 114 transitions. [2023-12-25 06:05:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-25 06:05:20,862 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.45) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (5), 1 states have call predecessors, (5), 7 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) Word has length 30 [2023-12-25 06:05:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:20,865 INFO L225 Difference]: With dead ends: 62 [2023-12-25 06:05:20,865 INFO L226 Difference]: Without dead ends: 56 [2023-12-25 06:05:20,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=350, Invalid=1812, Unknown=0, NotChecked=0, Total=2162 [2023-12-25 06:05:20,867 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 51 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:20,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 149 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 06:05:20,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-25 06:05:20,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2023-12-25 06:05:20,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (31), 10 states have call predecessors, (31), 6 states have call successors, (31) [2023-12-25 06:05:20,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 60 transitions. [2023-12-25 06:05:20,895 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 60 transitions. Word has length 30 [2023-12-25 06:05:20,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:20,896 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 60 transitions. [2023-12-25 06:05:20,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.45) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (5), 1 states have call predecessors, (5), 7 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-25 06:05:20,896 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 60 transitions. [2023-12-25 06:05:20,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-25 06:05:20,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:20,900 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:20,912 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 [2023-12-25 06:05:21,103 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 [2023-12-25 06:05:21,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:21,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:21,104 INFO L85 PathProgramCache]: Analyzing trace with hash 184462849, now seen corresponding path program 2 times [2023-12-25 06:05:21,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:21,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201311507] [2023-12-25 06:05:21,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:05:21,105 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 [2023-12-25 06:05:21,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:21,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:21,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-25 06:05:21,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:05:21,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:21,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:05:21,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-25 06:05:21,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-25 06:05:21,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:21,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201311507] [2023-12-25 06:05:21,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201311507] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:21,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:21,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 24 [2023-12-25 06:05:21,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715292089] [2023-12-25 06:05:21,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:21,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-25 06:05:21,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:21,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-25 06:05:21,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-12-25 06:05:21,900 INFO L87 Difference]: Start difference. First operand 34 states and 60 transitions. Second operand has 24 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (5), 1 states have call predecessors, (5), 7 states have return successors, (10), 10 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-25 06:05:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:23,168 INFO L93 Difference]: Finished difference Result 82 states and 166 transitions. [2023-12-25 06:05:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-25 06:05:23,169 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (5), 1 states have call predecessors, (5), 7 states have return successors, (10), 10 states have call predecessors, (10), 3 states have call successors, (10) Word has length 37 [2023-12-25 06:05:23,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:23,172 INFO L225 Difference]: With dead ends: 82 [2023-12-25 06:05:23,172 INFO L226 Difference]: Without dead ends: 76 [2023-12-25 06:05:23,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=359, Invalid=1993, Unknown=0, NotChecked=0, Total=2352 [2023-12-25 06:05:23,175 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 57 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:23,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 171 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:05:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-25 06:05:23,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 33. [2023-12-25 06:05:23,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 20 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (25), 11 states have call predecessors, (25), 6 states have call successors, (25) [2023-12-25 06:05:23,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 54 transitions. [2023-12-25 06:05:23,207 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 54 transitions. Word has length 37 [2023-12-25 06:05:23,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:23,208 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 54 transitions. [2023-12-25 06:05:23,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (5), 1 states have call predecessors, (5), 7 states have return successors, (10), 10 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-25 06:05:23,208 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 54 transitions. [2023-12-25 06:05:23,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-25 06:05:23,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:23,209 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:23,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:23,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /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 [2023-12-25 06:05:23,413 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:23,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:23,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1481432065, now seen corresponding path program 3 times [2023-12-25 06:05:23,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:23,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238217337] [2023-12-25 06:05:23,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:05:23,414 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 [2023-12-25 06:05:23,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:23,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:23,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-25 06:05:23,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 06:05:23,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:23,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:05:23,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-25 06:05:23,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 38 proven. 14 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-25 06:05:24,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:24,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238217337] [2023-12-25 06:05:24,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238217337] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:24,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:24,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 24 [2023-12-25 06:05:24,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928192153] [2023-12-25 06:05:24,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:24,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-25 06:05:24,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:24,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-25 06:05:24,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-12-25 06:05:24,113 INFO L87 Difference]: Start difference. First operand 33 states and 54 transitions. Second operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 14 states have internal predecessors, (34), 3 states have call successors, (6), 1 states have call predecessors, (6), 8 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 06:05:25,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:25,718 INFO L93 Difference]: Finished difference Result 115 states and 251 transitions. [2023-12-25 06:05:25,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-25 06:05:25,718 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 14 states have internal predecessors, (34), 3 states have call successors, (6), 1 states have call predecessors, (6), 8 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) Word has length 49 [2023-12-25 06:05:25,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:25,722 INFO L225 Difference]: With dead ends: 115 [2023-12-25 06:05:25,722 INFO L226 Difference]: Without dead ends: 109 [2023-12-25 06:05:25,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=573, Invalid=3087, Unknown=0, NotChecked=0, Total=3660 [2023-12-25 06:05:25,726 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:25,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 176 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:05:25,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-25 06:05:25,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 49. [2023-12-25 06:05:25,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.064516129032258) internal successors, (33), 28 states have internal predecessors, (33), 8 states have call successors, (8), 1 states have call predecessors, (8), 9 states have return successors, (64), 19 states have call predecessors, (64), 8 states have call successors, (64) [2023-12-25 06:05:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 105 transitions. [2023-12-25 06:05:25,753 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 105 transitions. Word has length 49 [2023-12-25 06:05:25,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:25,754 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 105 transitions. [2023-12-25 06:05:25,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 14 states have internal predecessors, (34), 3 states have call successors, (6), 1 states have call predecessors, (6), 8 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 06:05:25,754 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 105 transitions. [2023-12-25 06:05:25,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-25 06:05:25,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:25,757 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:25,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:25,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:25,973 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:25,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1194357590, now seen corresponding path program 4 times [2023-12-25 06:05:25,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:25,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184739747] [2023-12-25 06:05:25,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:05:25,974 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 [2023-12-25 06:05:25,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:25,975 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2023-12-25 06:05:25,976 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 (8)] Waiting until timeout for monitored process [2023-12-25 06:05:26,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:05:26,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:26,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 06:05:26,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 38 proven. 21 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-25 06:05:26,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 38 proven. 23 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-25 06:05:26,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:26,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184739747] [2023-12-25 06:05:26,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184739747] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:26,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:26,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 7 [2023-12-25 06:05:26,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751251742] [2023-12-25 06:05:26,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:26,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 06:05:26,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:26,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 06:05:26,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 06:05:26,252 INFO L87 Difference]: Start difference. First operand 49 states and 105 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 06:05:26,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:26,352 INFO L93 Difference]: Finished difference Result 134 states and 489 transitions. [2023-12-25 06:05:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:05:26,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 56 [2023-12-25 06:05:26,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:26,356 INFO L225 Difference]: With dead ends: 134 [2023-12-25 06:05:26,357 INFO L226 Difference]: Without dead ends: 89 [2023-12-25 06:05:26,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:05:26,362 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:26,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 49 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:26,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-25 06:05:26,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-12-25 06:05:26,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 56 states have internal predecessors, (57), 12 states have call successors, (12), 2 states have call predecessors, (12), 22 states have return successors, (223), 30 states have call predecessors, (223), 12 states have call successors, (223) [2023-12-25 06:05:26,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 292 transitions. [2023-12-25 06:05:26,411 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 292 transitions. Word has length 56 [2023-12-25 06:05:26,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:26,411 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 292 transitions. [2023-12-25 06:05:26,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 06:05:26,412 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 292 transitions. [2023-12-25 06:05:26,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-25 06:05:26,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:26,418 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:26,427 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 (8)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:26,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /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 [2023-12-25 06:05:26,622 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:26,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:26,622 INFO L85 PathProgramCache]: Analyzing trace with hash -994179230, now seen corresponding path program 5 times [2023-12-25 06:05:26,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:26,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820758102] [2023-12-25 06:05:26,623 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:05:26,623 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 [2023-12-25 06:05:26,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:26,624 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2023-12-25 06:05:26,632 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 (9)] Waiting until timeout for monitored process [2023-12-25 06:05:26,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-25 06:05:26,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:26,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-25 06:05:26,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:26,898 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 16 proven. 50 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-25 06:05:26,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 24 proven. 60 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-25 06:05:28,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:28,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820758102] [2023-12-25 06:05:28,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820758102] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:28,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:28,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23] total 38 [2023-12-25 06:05:28,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446900163] [2023-12-25 06:05:28,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:28,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-25 06:05:28,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:28,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-25 06:05:28,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 06:05:28,248 INFO L87 Difference]: Start difference. First operand 89 states and 292 transitions. Second operand has 38 states, 32 states have (on average 1.34375) internal successors, (43), 22 states have internal predecessors, (43), 7 states have call successors, (9), 1 states have call predecessors, (9), 13 states have return successors, (16), 16 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-25 06:05:37,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:37,788 INFO L93 Difference]: Finished difference Result 551 states and 2462 transitions. [2023-12-25 06:05:37,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2023-12-25 06:05:37,788 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 32 states have (on average 1.34375) internal successors, (43), 22 states have internal predecessors, (43), 7 states have call successors, (9), 1 states have call predecessors, (9), 13 states have return successors, (16), 16 states have call predecessors, (16), 7 states have call successors, (16) Word has length 54 [2023-12-25 06:05:37,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:37,809 INFO L225 Difference]: With dead ends: 551 [2023-12-25 06:05:37,810 INFO L226 Difference]: Without dead ends: 545 [2023-12-25 06:05:37,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14799 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=6362, Invalid=38794, Unknown=0, NotChecked=0, Total=45156 [2023-12-25 06:05:37,824 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:37,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 273 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-25 06:05:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2023-12-25 06:05:37,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 153. [2023-12-25 06:05:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 94 states have internal predecessors, (95), 19 states have call successors, (19), 2 states have call predecessors, (19), 41 states have return successors, (706), 56 states have call predecessors, (706), 19 states have call successors, (706) [2023-12-25 06:05:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 820 transitions. [2023-12-25 06:05:37,976 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 820 transitions. Word has length 54 [2023-12-25 06:05:37,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:37,976 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 820 transitions. [2023-12-25 06:05:37,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 32 states have (on average 1.34375) internal successors, (43), 22 states have internal predecessors, (43), 7 states have call successors, (9), 1 states have call predecessors, (9), 13 states have return successors, (16), 16 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-25 06:05:37,976 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 820 transitions. [2023-12-25 06:05:37,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-25 06:05:37,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:37,983 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:37,991 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 (9)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:38,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 [2023-12-25 06:05:38,187 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:38,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:38,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1501503883, now seen corresponding path program 6 times [2023-12-25 06:05:38,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:38,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083426041] [2023-12-25 06:05:38,189 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:05:38,189 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 [2023-12-25 06:05:38,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:38,190 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2023-12-25 06:05:38,192 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 (10)] Waiting until timeout for monitored process [2023-12-25 06:05:38,235 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-25 06:05:38,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:38,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:05:38,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 76 proven. 20 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-25 06:05:38,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 76 proven. 23 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-25 06:05:38,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:38,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083426041] [2023-12-25 06:05:38,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083426041] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:38,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:38,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 10 [2023-12-25 06:05:38,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209621332] [2023-12-25 06:05:38,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:38,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 06:05:38,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:38,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 06:05:38,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:05:38,530 INFO L87 Difference]: Start difference. First operand 153 states and 820 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-12-25 06:05:38,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:38,644 INFO L93 Difference]: Finished difference Result 296 states and 2514 transitions. [2023-12-25 06:05:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:05:38,645 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 63 [2023-12-25 06:05:38,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:38,650 INFO L225 Difference]: With dead ends: 296 [2023-12-25 06:05:38,651 INFO L226 Difference]: Without dead ends: 147 [2023-12-25 06:05:38,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-12-25 06:05:38,658 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:38,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 80 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:38,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-25 06:05:38,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 79. [2023-12-25 06:05:38,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 48 states have (on average 1.0625) internal successors, (51), 49 states have internal predecessors, (51), 12 states have call successors, (12), 3 states have call predecessors, (12), 18 states have return successors, (176), 26 states have call predecessors, (176), 12 states have call successors, (176) [2023-12-25 06:05:38,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 239 transitions. [2023-12-25 06:05:38,700 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 239 transitions. Word has length 63 [2023-12-25 06:05:38,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:38,700 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 239 transitions. [2023-12-25 06:05:38,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-12-25 06:05:38,700 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 239 transitions. [2023-12-25 06:05:38,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-25 06:05:38,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:38,702 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:38,711 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 (10)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:38,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 [2023-12-25 06:05:38,906 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:38,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:38,907 INFO L85 PathProgramCache]: Analyzing trace with hash -115935473, now seen corresponding path program 7 times [2023-12-25 06:05:38,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:38,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815866781] [2023-12-25 06:05:38,907 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:05:38,907 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 [2023-12-25 06:05:38,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:38,909 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2023-12-25 06:05:38,916 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 (11)] Waiting until timeout for monitored process [2023-12-25 06:05:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:38,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-25 06:05:38,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 158 proven. 81 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-12-25 06:05:39,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 170 proven. 87 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-12-25 06:05:40,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:40,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815866781] [2023-12-25 06:05:40,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815866781] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:40,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:40,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24] total 40 [2023-12-25 06:05:40,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812581479] [2023-12-25 06:05:40,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:40,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-25 06:05:40,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:40,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-25 06:05:40,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1415, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 06:05:40,651 INFO L87 Difference]: Start difference. First operand 79 states and 239 transitions. Second operand has 40 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 22 states have internal predecessors, (49), 7 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (23), 19 states have call predecessors, (23), 7 states have call successors, (23) [2023-12-25 06:05:46,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:46,444 INFO L93 Difference]: Finished difference Result 352 states and 1475 transitions. [2023-12-25 06:05:46,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-12-25 06:05:46,445 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 22 states have internal predecessors, (49), 7 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (23), 19 states have call predecessors, (23), 7 states have call successors, (23) Word has length 99 [2023-12-25 06:05:46,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:46,453 INFO L225 Difference]: With dead ends: 352 [2023-12-25 06:05:46,453 INFO L226 Difference]: Without dead ends: 346 [2023-12-25 06:05:46,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6368 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3322, Invalid=19328, Unknown=0, NotChecked=0, Total=22650 [2023-12-25 06:05:46,461 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 53 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:46,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 263 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 06:05:46,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-12-25 06:05:46,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 73. [2023-12-25 06:05:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 45 states have internal predecessors, (47), 12 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (155), 24 states have call predecessors, (155), 12 states have call successors, (155) [2023-12-25 06:05:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 214 transitions. [2023-12-25 06:05:46,549 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 214 transitions. Word has length 99 [2023-12-25 06:05:46,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:46,551 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 214 transitions. [2023-12-25 06:05:46,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 22 states have internal predecessors, (49), 7 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (23), 19 states have call predecessors, (23), 7 states have call successors, (23) [2023-12-25 06:05:46,551 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 214 transitions. [2023-12-25 06:05:46,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-25 06:05:46,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:46,556 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:46,563 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 (11)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:46,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 [2023-12-25 06:05:46,760 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:46,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:46,761 INFO L85 PathProgramCache]: Analyzing trace with hash -918630070, now seen corresponding path program 8 times [2023-12-25 06:05:46,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:46,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520211127] [2023-12-25 06:05:46,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:05:46,761 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 [2023-12-25 06:05:46,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:46,762 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2023-12-25 06:05:46,763 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 (12)] Waiting until timeout for monitored process [2023-12-25 06:05:46,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:05:46,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:46,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-25 06:05:46,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 64 proven. 226 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-12-25 06:05:47,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 80 proven. 294 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-12-25 06:05:51,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:51,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520211127] [2023-12-25 06:05:51,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520211127] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:51,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:51,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 43] total 70 [2023-12-25 06:05:51,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324778901] [2023-12-25 06:05:51,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:51,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-25 06:05:51,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:51,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-25 06:05:51,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=4440, Unknown=0, NotChecked=0, Total=4830 [2023-12-25 06:05:51,063 INFO L87 Difference]: Start difference. First operand 73 states and 214 transitions. Second operand has 70 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 38 states have internal predecessors, (71), 15 states have call successors, (17), 1 states have call predecessors, (17), 25 states have return successors, (32), 32 states have call predecessors, (32), 15 states have call successors, (32) [2023-12-25 06:06:44,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:44,190 INFO L93 Difference]: Finished difference Result 817 states and 4298 transitions. [2023-12-25 06:06:44,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 506 states. [2023-12-25 06:06:44,191 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 38 states have internal predecessors, (71), 15 states have call successors, (17), 1 states have call predecessors, (17), 25 states have return successors, (32), 32 states have call predecessors, (32), 15 states have call successors, (32) Word has length 102 [2023-12-25 06:06:44,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:44,237 INFO L225 Difference]: With dead ends: 817 [2023-12-25 06:06:44,238 INFO L226 Difference]: Without dead ends: 811 [2023-12-25 06:06:44,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 567 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143386 ImplicationChecksByTransitivity, 48.3s TimeCoverageRelationStatistics Valid=43322, Invalid=279870, Unknown=0, NotChecked=0, Total=323192 [2023-12-25 06:06:44,282 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 99 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 9255 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 9562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 9255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:44,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 684 Invalid, 9562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 9255 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-25 06:06:44,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2023-12-25 06:06:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 111. [2023-12-25 06:06:44,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 64 states have (on average 1.046875) internal successors, (67), 65 states have internal predecessors, (67), 20 states have call successors, (20), 3 states have call predecessors, (20), 26 states have return successors, (456), 42 states have call predecessors, (456), 20 states have call successors, (456) [2023-12-25 06:06:44,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 543 transitions. [2023-12-25 06:06:44,571 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 543 transitions. Word has length 102 [2023-12-25 06:06:44,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:44,571 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 543 transitions. [2023-12-25 06:06:44,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 38 states have internal predecessors, (71), 15 states have call successors, (17), 1 states have call predecessors, (17), 25 states have return successors, (32), 32 states have call predecessors, (32), 15 states have call successors, (32) [2023-12-25 06:06:44,572 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 543 transitions. [2023-12-25 06:06:44,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-25 06:06:44,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:44,574 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:44,579 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 (12)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:44,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /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 [2023-12-25 06:06:44,779 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:44,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:44,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1709374217, now seen corresponding path program 9 times [2023-12-25 06:06:44,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:44,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564619067] [2023-12-25 06:06:44,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:06:44,780 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 [2023-12-25 06:06:44,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:44,782 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2023-12-25 06:06:44,783 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 (13)] Waiting until timeout for monitored process [2023-12-25 06:06:44,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-25 06:06:44,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:44,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-25 06:06:44,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 274 proven. 435 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2023-12-25 06:06:45,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 297 proven. 507 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2023-12-25 06:06:46,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:46,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564619067] [2023-12-25 06:06:46,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564619067] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:06:46,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:46,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 28] total 37 [2023-12-25 06:06:46,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086876537] [2023-12-25 06:06:46,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:46,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-25 06:06:46,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:46,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-25 06:06:46,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1207, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 06:06:46,989 INFO L87 Difference]: Start difference. First operand 111 states and 543 transitions. Second operand has 37 states, 33 states have (on average 2.303030303030303) internal successors, (76), 27 states have internal predecessors, (76), 21 states have call successors, (23), 1 states have call predecessors, (23), 17 states have return successors, (36), 19 states have call predecessors, (36), 21 states have call successors, (36) [2023-12-25 06:06:53,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:53,663 INFO L93 Difference]: Finished difference Result 604 states and 3595 transitions. [2023-12-25 06:06:53,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2023-12-25 06:06:53,664 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 2.303030303030303) internal successors, (76), 27 states have internal predecessors, (76), 21 states have call successors, (23), 1 states have call predecessors, (23), 17 states have return successors, (36), 19 states have call predecessors, (36), 21 states have call successors, (36) Word has length 147 [2023-12-25 06:06:53,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:53,685 INFO L225 Difference]: With dead ends: 604 [2023-12-25 06:06:53,686 INFO L226 Difference]: Without dead ends: 497 [2023-12-25 06:06:53,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18038 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5584, Invalid=44368, Unknown=0, NotChecked=0, Total=49952 [2023-12-25 06:06:53,698 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 75 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 4602 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 5324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 4602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:53,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 658 Invalid, 5324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 4602 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-25 06:06:53,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-12-25 06:06:53,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 263. [2023-12-25 06:06:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 153 states have (on average 1.0326797385620916) internal successors, (158), 153 states have internal predecessors, (158), 45 states have call successors, (45), 9 states have call predecessors, (45), 64 states have return successors, (1855), 100 states have call predecessors, (1855), 45 states have call successors, (1855) [2023-12-25 06:06:53,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 2058 transitions. [2023-12-25 06:06:53,874 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 2058 transitions. Word has length 147 [2023-12-25 06:06:53,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:53,874 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 2058 transitions. [2023-12-25 06:06:53,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 2.303030303030303) internal successors, (76), 27 states have internal predecessors, (76), 21 states have call successors, (23), 1 states have call predecessors, (23), 17 states have return successors, (36), 19 states have call predecessors, (36), 21 states have call successors, (36) [2023-12-25 06:06:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 2058 transitions. [2023-12-25 06:06:53,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-25 06:06:53,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:53,890 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 19, 14, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:53,899 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 (13)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:54,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 [2023-12-25 06:06:54,097 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:54,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:54,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2084114629, now seen corresponding path program 10 times [2023-12-25 06:06:54,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:54,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433091081] [2023-12-25 06:06:54,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:06:54,099 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 [2023-12-25 06:06:54,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:54,100 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2023-12-25 06:06:54,136 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 (14)] Waiting until timeout for monitored process [2023-12-25 06:06:54,248 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:06:54,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:54,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:06:54,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2547 backedges. 159 proven. 702 refuted. 0 times theorem prover too weak. 1686 trivial. 0 not checked. [2023-12-25 06:06:54,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2547 backedges. 159 proven. 745 refuted. 0 times theorem prover too weak. 1643 trivial. 0 not checked. [2023-12-25 06:06:55,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:55,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433091081] [2023-12-25 06:06:55,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433091081] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:06:55,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:55,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 18 [2023-12-25 06:06:55,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69886949] [2023-12-25 06:06:55,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:55,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-25 06:06:55,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:55,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-25 06:06:55,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-12-25 06:06:55,477 INFO L87 Difference]: Start difference. First operand 263 states and 2058 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (22), 8 states have call predecessors, (22), 12 states have call successors, (22) [2023-12-25 06:06:55,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:55,976 INFO L93 Difference]: Finished difference Result 1047 states and 11917 transitions. [2023-12-25 06:06:55,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 06:06:55,977 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (22), 8 states have call predecessors, (22), 12 states have call successors, (22) Word has length 209 [2023-12-25 06:06:55,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:56,024 INFO L225 Difference]: With dead ends: 1047 [2023-12-25 06:06:56,024 INFO L226 Difference]: Without dead ends: 788 [2023-12-25 06:06:56,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:06:56,048 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 67 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:56,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 229 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:06:56,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-12-25 06:06:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 784. [2023-12-25 06:06:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 460 states have (on average 1.0130434782608695) internal successors, (466), 458 states have internal predecessors, (466), 130 states have call successors, (130), 26 states have call predecessors, (130), 193 states have return successors, (4924), 299 states have call predecessors, (4924), 130 states have call successors, (4924) [2023-12-25 06:06:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 5520 transitions. [2023-12-25 06:06:56,439 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 5520 transitions. Word has length 209 [2023-12-25 06:06:56,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:56,439 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 5520 transitions. [2023-12-25 06:06:56,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (22), 8 states have call predecessors, (22), 12 states have call successors, (22) [2023-12-25 06:06:56,440 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 5520 transitions. [2023-12-25 06:06:56,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2023-12-25 06:06:56,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:56,452 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 53, 36, 35, 35, 35, 35, 35, 35, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:56,460 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 (14)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:56,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /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 [2023-12-25 06:06:56,658 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:56,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:56,659 INFO L85 PathProgramCache]: Analyzing trace with hash 143144809, now seen corresponding path program 11 times [2023-12-25 06:06:56,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:56,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901108508] [2023-12-25 06:06:56,660 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:06:56,660 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 [2023-12-25 06:06:56,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:56,661 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2023-12-25 06:06:56,665 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 (15)] Waiting until timeout for monitored process [2023-12-25 06:06:56,821 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-25 06:06:56,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:56,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-25 06:06:56,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 19133 backedges. 9104 proven. 522 refuted. 0 times theorem prover too weak. 9507 trivial. 0 not checked. [2023-12-25 06:06:57,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 19133 backedges. 857 proven. 2845 refuted. 0 times theorem prover too weak. 15431 trivial. 0 not checked. [2023-12-25 06:07:00,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:00,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901108508] [2023-12-25 06:07:00,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901108508] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:00,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:00,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26] total 41 [2023-12-25 06:07:00,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165309212] [2023-12-25 06:07:00,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:00,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-25 06:07:00,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:00,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-25 06:07:00,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2023-12-25 06:07:00,129 INFO L87 Difference]: Start difference. First operand 784 states and 5520 transitions. Second operand has 41 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 23 states have internal predecessors, (67), 14 states have call successors, (20), 2 states have call predecessors, (20), 17 states have return successors, (36), 22 states have call predecessors, (36), 14 states have call successors, (36) [2023-12-25 06:07:10,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:10,670 INFO L93 Difference]: Finished difference Result 6486 states and 97665 transitions. [2023-12-25 06:07:10,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2023-12-25 06:07:10,671 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 23 states have internal predecessors, (67), 14 states have call successors, (20), 2 states have call predecessors, (20), 17 states have return successors, (36), 22 states have call predecessors, (36), 14 states have call successors, (36) Word has length 557 [2023-12-25 06:07:10,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:11,319 INFO L225 Difference]: With dead ends: 6486 [2023-12-25 06:07:11,319 INFO L226 Difference]: Without dead ends: 5494 [2023-12-25 06:07:11,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1337 GetRequests, 1073 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25459 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=8224, Invalid=62266, Unknown=0, NotChecked=0, Total=70490 [2023-12-25 06:07:11,447 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 100 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 3236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:11,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 473 Invalid, 3236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 06:07:11,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5494 states. [2023-12-25 06:07:13,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5494 to 1131. [2023-12-25 06:07:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 642 states have (on average 1.0155763239875388) internal successors, (652), 640 states have internal predecessors, (652), 210 states have call successors, (210), 30 states have call predecessors, (210), 278 states have return successors, (14098), 460 states have call predecessors, (14098), 210 states have call successors, (14098) [2023-12-25 06:07:13,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 14960 transitions. [2023-12-25 06:07:13,481 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 14960 transitions. Word has length 557 [2023-12-25 06:07:13,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:13,482 INFO L495 AbstractCegarLoop]: Abstraction has 1131 states and 14960 transitions. [2023-12-25 06:07:13,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 23 states have internal predecessors, (67), 14 states have call successors, (20), 2 states have call predecessors, (20), 17 states have return successors, (36), 22 states have call predecessors, (36), 14 states have call successors, (36) [2023-12-25 06:07:13,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 14960 transitions. [2023-12-25 06:07:13,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-25 06:07:13,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:13,491 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:13,498 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 (15)] Forceful destruction successful, exit code 0 [2023-12-25 06:07:13,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 [2023-12-25 06:07:13,696 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:13,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:13,696 INFO L85 PathProgramCache]: Analyzing trace with hash -827892454, now seen corresponding path program 12 times [2023-12-25 06:07:13,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:13,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394670789] [2023-12-25 06:07:13,696 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:07:13,696 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 [2023-12-25 06:07:13,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:13,698 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-12-25 06:07:13,698 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 (16)] Waiting until timeout for monitored process [2023-12-25 06:07:13,963 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2023-12-25 06:07:13,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:13,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-25 06:07:13,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 256 proven. 962 refuted. 0 times theorem prover too weak. 1201 trivial. 0 not checked. [2023-12-25 06:07:15,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 288 proven. 1290 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2023-12-25 06:07:29,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:29,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394670789] [2023-12-25 06:07:29,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394670789] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:29,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:29,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 83] total 134 [2023-12-25 06:07:29,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145918187] [2023-12-25 06:07:29,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:29,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2023-12-25 06:07:29,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:29,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2023-12-25 06:07:29,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1278, Invalid=16544, Unknown=0, NotChecked=0, Total=17822 [2023-12-25 06:07:29,010 INFO L87 Difference]: Start difference. First operand 1131 states and 14960 transitions. Second operand has 134 states, 104 states have (on average 1.2211538461538463) internal successors, (127), 70 states have internal predecessors, (127), 31 states have call successors, (33), 1 states have call predecessors, (33), 49 states have return successors, (64), 64 states have call predecessors, (64), 31 states have call successors, (64) Received shutdown request... [2023-12-25 06:18:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1846 states. [2023-12-25 06:18:29,398 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 06:18:29,398 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 06:18:29,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2235 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 1971 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1974553 ImplicationChecksByTransitivity, 581.5s TimeCoverageRelationStatistics Valid=469550, Invalid=3421206, Unknown=0, NotChecked=0, Total=3890756 [2023-12-25 06:18:29,764 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 611 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 58998 mSolverCounterSat, 2590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 61588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2590 IncrementalHoareTripleChecker+Valid, 58998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:18:29,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1529 Invalid, 61588 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2590 Valid, 58998 Invalid, 0 Unknown, 0 Unchecked, 40.0s Time] [2023-12-25 06:18:29,766 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 06:18:29,779 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 (16)] Forceful destruction successful, exit code 0 [2023-12-25 06:18:29,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 [2023-12-25 06:18:29,973 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (1131states) and FLOYD_HOARE automaton (currently 1846 states, 134 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 1973 known predicates. [2023-12-25 06:18:29,977 INFO L445 BasicCegarLoop]: Path program histogram: [12, 1, 1, 1] [2023-12-25 06:18:29,979 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 06:18:29,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 06:18:29 BoogieIcfgContainer [2023-12-25 06:18:29,981 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 06:18:29,981 INFO L158 Benchmark]: Toolchain (without parser) took 793999.53ms. Allocated memory was 242.2MB in the beginning and 5.0GB in the end (delta: 4.7GB). Free memory was 187.0MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-25 06:18:29,981 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 191.9MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 06:18:29,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.74ms. Allocated memory is still 242.2MB. Free memory was 187.0MB in the beginning and 176.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-25 06:18:29,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.48ms. Allocated memory is still 242.2MB. Free memory was 175.5MB in the beginning and 174.4MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 06:18:29,982 INFO L158 Benchmark]: Boogie Preprocessor took 29.04ms. Allocated memory is still 242.2MB. Free memory was 174.4MB in the beginning and 172.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 06:18:29,982 INFO L158 Benchmark]: RCFGBuilder took 369.76ms. Allocated memory is still 242.2MB. Free memory was 172.3MB in the beginning and 160.3MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 06:18:29,982 INFO L158 Benchmark]: TraceAbstraction took 793360.51ms. Allocated memory was 242.2MB in the beginning and 5.0GB in the end (delta: 4.7GB). Free memory was 159.7MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-25 06:18:29,984 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 191.9MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 206.74ms. Allocated memory is still 242.2MB. Free memory was 187.0MB in the beginning and 176.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.48ms. Allocated memory is still 242.2MB. Free memory was 175.5MB in the beginning and 174.4MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.04ms. Allocated memory is still 242.2MB. Free memory was 174.4MB in the beginning and 172.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 369.76ms. Allocated memory is still 242.2MB. Free memory was 172.3MB in the beginning and 160.3MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 793360.51ms. Allocated memory was 242.2MB in the beginning and 5.0GB in the end (delta: 4.7GB). Free memory was 159.7MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 46). Cancelled while NwaCegarLoop was constructing difference of abstraction (1131states) and FLOYD_HOARE automaton (currently 1846 states, 134 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 1973 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 793.3s, OverallIterations: 15, TraceHistogramMax: 89, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.1s, AutomataDifference: 753.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1323 SdHoareTripleChecker+Valid, 56.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1211 mSDsluCounter, 4880 SdHoareTripleChecker+Invalid, 48.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4472 mSDsCounter, 4692 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81779 IncrementalHoareTripleChecker+Invalid, 86471 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4692 mSolverCounterUnsat, 408 mSDtfsCounter, 81779 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6432 GetRequests, 2828 SyntacticMatches, 0 SemanticMatches, 3603 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2183977 ImplicationChecksByTransitivity, 658.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1131occurred in iteration=14, InterpolantAutomatonStates: 1386, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 6161 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 32.3s InterpolantComputationTime, 1653 NumberOfCodeBlocks, 1172 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 3244 ConstructedInterpolants, 0 QuantifiedInterpolants, 7225 SizeOfPredicates, 107 NumberOfNonLiveVariables, 2169 ConjunctsInSsa, 367 ConjunctsInUnsatCore, 28 InterpolantComputations, 3 PerfectInterpolantSequences, 44994/53970 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown