/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 16:30:22,139 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 16:30:22,231 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 16:30:22,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 16:30:22,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 16:30:22,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 16:30:22,253 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 16:30:22,253 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 16:30:22,253 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 16:30:22,254 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 16:30:22,254 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 16:30:22,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 16:30:22,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 16:30:22,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 16:30:22,257 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 16:30:22,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 16:30:22,258 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 16:30:22,258 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 16:30:22,258 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 16:30:22,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 16:30:22,259 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 16:30:22,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 16:30:22,263 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 16:30:22,263 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 16:30:22,263 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 16:30:22,263 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 16:30:22,263 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 16:30:22,264 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 16:30:22,264 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 16:30:22,264 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 16:30:22,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 16:30:22,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 16:30:22,265 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 16:30:22,265 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 16:30:22,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:30:22,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 16:30:22,266 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 16:30:22,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 16:30:22,266 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 16:30:22,266 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 16:30:22,266 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 16:30:22,267 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 16:30:22,267 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 16:30:22,267 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 16:30:22,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 16:30:22,268 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 16:30:22,268 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 16:30:22,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 16:30:22,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 16:30:22,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 16:30:22,523 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 16:30:22,524 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 16:30:22,525 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2023-12-16 16:30:23,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 16:30:23,886 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 16:30:23,886 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2023-12-16 16:30:23,893 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dce90cad/0be711afa3e8405f8b3af5a7f1794c4b/FLAG2a5293d2d [2023-12-16 16:30:23,909 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dce90cad/0be711afa3e8405f8b3af5a7f1794c4b [2023-12-16 16:30:23,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 16:30:23,913 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 16:30:23,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 16:30:23,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 16:30:23,921 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 16:30:23,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:30:23" (1/1) ... [2023-12-16 16:30:23,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c58c50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:23, skipping insertion in model container [2023-12-16 16:30:23,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:30:23" (1/1) ... [2023-12-16 16:30:23,945 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:30:24,075 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i[893,906] [2023-12-16 16:30:24,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:30:24,097 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 16:30:24,108 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i[893,906] [2023-12-16 16:30:24,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:30:24,124 INFO L206 MainTranslator]: Completed translation [2023-12-16 16:30:24,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:24 WrapperNode [2023-12-16 16:30:24,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 16:30:24,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 16:30:24,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 16:30:24,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 16:30:24,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:24" (1/1) ... [2023-12-16 16:30:24,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:24" (1/1) ... [2023-12-16 16:30:24,160 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 58 [2023-12-16 16:30:24,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 16:30:24,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 16:30:24,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 16:30:24,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 16:30:24,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:24" (1/1) ... [2023-12-16 16:30:24,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:24" (1/1) ... [2023-12-16 16:30:24,188 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:24" (1/1) ... [2023-12-16 16:30:24,196 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 16:30:24,197 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:24" (1/1) ... [2023-12-16 16:30:24,197 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:24" (1/1) ... [2023-12-16 16:30:24,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:24" (1/1) ... [2023-12-16 16:30:24,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:24" (1/1) ... [2023-12-16 16:30:24,204 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:24" (1/1) ... [2023-12-16 16:30:24,207 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:24" (1/1) ... [2023-12-16 16:30:24,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 16:30:24,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 16:30:24,209 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 16:30:24,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 16:30:24,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:24" (1/1) ... [2023-12-16 16:30:24,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:30:24,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 16:30:24,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 16:30:24,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 16:30:24,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 16:30:24,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 16:30:24,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 16:30:24,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 16:30:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 16:30:24,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 16:30:24,327 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 16:30:24,329 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 16:30:24,451 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 16:30:24,479 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 16:30:24,480 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 16:30:24,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:30:24 BoogieIcfgContainer [2023-12-16 16:30:24,480 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 16:30:24,482 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 16:30:24,482 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 16:30:24,484 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 16:30:24,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:30:23" (1/3) ... [2023-12-16 16:30:24,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e207b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:30:24, skipping insertion in model container [2023-12-16 16:30:24,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:30:24" (2/3) ... [2023-12-16 16:30:24,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e207b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:30:24, skipping insertion in model container [2023-12-16 16:30:24,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:30:24" (3/3) ... [2023-12-16 16:30:24,487 INFO L112 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2023-12-16 16:30:24,502 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 16:30:24,503 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 16:30:24,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 16:30:24,558 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;@254d61f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 16:30:24,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 16:30:24,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 17 states have internal predecessors, (23), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 16:30:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 16:30:24,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:24,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:24,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:24,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:24,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1062398335, now seen corresponding path program 1 times [2023-12-16 16:30:24,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:24,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522810551] [2023-12-16 16:30:24,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:24,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:24,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:24,597 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:24,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 16:30:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:24,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 16:30:24,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:24,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:30:24,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:30:24,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:24,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522810551] [2023-12-16 16:30:24,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522810551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:30:24,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:30:24,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:30:24,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450831162] [2023-12-16 16:30:24,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:30:24,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 16:30:24,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:24,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 16:30:24,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:30:24,740 INFO L87 Difference]: Start difference. First operand has 26 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 17 states have internal predecessors, (23), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:30:24,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:24,781 INFO L93 Difference]: Finished difference Result 48 states and 79 transitions. [2023-12-16 16:30:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 16:30:24,784 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-16 16:30:24,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:24,790 INFO L225 Difference]: With dead ends: 48 [2023-12-16 16:30:24,790 INFO L226 Difference]: Without dead ends: 23 [2023-12-16 16:30:24,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:30:24,798 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:24,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:30:24,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-16 16:30:24,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-16 16:30:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 16:30:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2023-12-16 16:30:24,838 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 9 [2023-12-16 16:30:24,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:24,839 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2023-12-16 16:30:24,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:30:24,839 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2023-12-16 16:30:24,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 16:30:24,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:24,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:24,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 16:30:25,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:25,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:25,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:25,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2013109713, now seen corresponding path program 1 times [2023-12-16 16:30:25,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:25,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053589627] [2023-12-16 16:30:25,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:25,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:25,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:25,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:25,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 16:30:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:25,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 16:30:25,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:25,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:30:25,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:30:25,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:25,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053589627] [2023-12-16 16:30:25,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053589627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:30:25,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:30:25,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 16:30:25,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857859484] [2023-12-16 16:30:25,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:30:25,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:30:25,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:25,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:30:25,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:30:25,165 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:30:25,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:25,256 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2023-12-16 16:30:25,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:30:25,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-16 16:30:25,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:25,260 INFO L225 Difference]: With dead ends: 38 [2023-12-16 16:30:25,260 INFO L226 Difference]: Without dead ends: 36 [2023-12-16 16:30:25,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:30:25,263 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:25,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 78 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:30:25,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-16 16:30:25,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2023-12-16 16:30:25,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.263157894736842) internal successors, (24), 22 states have internal predecessors, (24), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 16:30:25,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2023-12-16 16:30:25,278 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 10 [2023-12-16 16:30:25,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:25,279 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2023-12-16 16:30:25,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:30:25,279 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2023-12-16 16:30:25,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 16:30:25,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:25,280 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:25,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 16:30:25,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:25,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:25,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:25,481 INFO L85 PathProgramCache]: Analyzing trace with hash -908723572, now seen corresponding path program 1 times [2023-12-16 16:30:25,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:25,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675421692] [2023-12-16 16:30:25,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:25,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:25,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:25,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:25,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 16:30:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:25,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:30:25,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:30:25,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:30:25,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:25,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675421692] [2023-12-16 16:30:25,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675421692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:30:25,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:30:25,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 16:30:25,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641650829] [2023-12-16 16:30:25,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:30:25,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:30:25,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:25,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:30:25,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:30:25,671 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:30:25,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:25,788 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2023-12-16 16:30:25,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:30:25,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-16 16:30:25,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:25,791 INFO L225 Difference]: With dead ends: 42 [2023-12-16 16:30:25,791 INFO L226 Difference]: Without dead ends: 40 [2023-12-16 16:30:25,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:30:25,794 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:25,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:30:25,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-16 16:30:25,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2023-12-16 16:30:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-16 16:30:25,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2023-12-16 16:30:25,817 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 15 [2023-12-16 16:30:25,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:25,818 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2023-12-16 16:30:25,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:30:25,818 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2023-12-16 16:30:25,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 16:30:25,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:25,819 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:25,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 16:30:26,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:26,022 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:26,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:26,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1256468744, now seen corresponding path program 1 times [2023-12-16 16:30:26,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:26,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712511666] [2023-12-16 16:30:26,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:26,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:26,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:26,024 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:26,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 16:30:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:26,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:30:26,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:30:26,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:30:26,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:26,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712511666] [2023-12-16 16:30:26,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712511666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:30:26,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:30:26,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 16:30:26,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57470663] [2023-12-16 16:30:26,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:30:26,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:30:26,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:26,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:30:26,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:30:26,118 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:30:26,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:26,254 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2023-12-16 16:30:26,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:30:26,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-12-16 16:30:26,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:26,260 INFO L225 Difference]: With dead ends: 59 [2023-12-16 16:30:26,260 INFO L226 Difference]: Without dead ends: 57 [2023-12-16 16:30:26,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:30:26,261 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:26,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 118 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:30:26,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-16 16:30:26,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2023-12-16 16:30:26,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 34 states have internal predecessors, (37), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 16:30:26,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2023-12-16 16:30:26,272 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 21 [2023-12-16 16:30:26,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:26,272 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2023-12-16 16:30:26,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:30:26,272 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2023-12-16 16:30:26,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 16:30:26,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:26,273 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:26,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 16:30:26,475 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 [2023-12-16 16:30:26,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:26,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:26,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2036104194, now seen corresponding path program 1 times [2023-12-16 16:30:26,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:26,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048023996] [2023-12-16 16:30:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:26,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:26,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:26,478 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:26,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 16:30:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:26,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 16:30:26,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:30:26,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:30:26,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:26,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048023996] [2023-12-16 16:30:26,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048023996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:30:26,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:30:26,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 16:30:26,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789834643] [2023-12-16 16:30:26,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:30:26,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:30:26,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:26,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:30:26,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:30:26,549 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:30:26,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:26,633 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2023-12-16 16:30:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:30:26,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-12-16 16:30:26,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:26,634 INFO L225 Difference]: With dead ends: 65 [2023-12-16 16:30:26,635 INFO L226 Difference]: Without dead ends: 63 [2023-12-16 16:30:26,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:30:26,636 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 14 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:26,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 173 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:30:26,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-16 16:30:26,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2023-12-16 16:30:26,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 37 states have internal predecessors, (40), 17 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 16:30:26,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2023-12-16 16:30:26,646 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 22 [2023-12-16 16:30:26,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:26,647 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2023-12-16 16:30:26,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:30:26,647 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2023-12-16 16:30:26,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 16:30:26,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:26,648 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:26,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-16 16:30:26,850 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 [2023-12-16 16:30:26,851 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:26,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:26,851 INFO L85 PathProgramCache]: Analyzing trace with hash -2030546205, now seen corresponding path program 1 times [2023-12-16 16:30:26,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:26,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757579789] [2023-12-16 16:30:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:26,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:26,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:26,853 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:26,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 16:30:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:26,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 16:30:26,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 16:30:27,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:30:27,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:27,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757579789] [2023-12-16 16:30:27,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757579789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:30:27,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:30:27,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 16:30:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962843191] [2023-12-16 16:30:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:30:27,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 16:30:27,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 16:30:27,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:30:27,002 INFO L87 Difference]: Start difference. First operand 56 states and 73 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 16:30:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:27,146 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2023-12-16 16:30:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 16:30:27,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-12-16 16:30:27,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:27,149 INFO L225 Difference]: With dead ends: 67 [2023-12-16 16:30:27,150 INFO L226 Difference]: Without dead ends: 60 [2023-12-16 16:30:27,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 16:30:27,153 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:27,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 101 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:30:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-16 16:30:27,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2023-12-16 16:30:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 38 states have internal predecessors, (40), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-16 16:30:27,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2023-12-16 16:30:27,182 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 26 [2023-12-16 16:30:27,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:27,182 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2023-12-16 16:30:27,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 16:30:27,182 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2023-12-16 16:30:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 16:30:27,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:27,183 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:27,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 16:30:27,388 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 [2023-12-16 16:30:27,388 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:27,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:27,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1313350375, now seen corresponding path program 1 times [2023-12-16 16:30:27,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:27,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750642102] [2023-12-16 16:30:27,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:27,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:27,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:27,390 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) [2023-12-16 16:30:27,392 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 [2023-12-16 16:30:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:27,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 16:30:27,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:27,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 16:30:27,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:30:27,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:27,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750642102] [2023-12-16 16:30:27,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750642102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:30:27,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:30:27,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 16:30:27,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976295475] [2023-12-16 16:30:27,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:30:27,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 16:30:27,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:27,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 16:30:27,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 16:30:27,742 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 16:30:28,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:28,047 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2023-12-16 16:30:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 16:30:28,048 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2023-12-16 16:30:28,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:28,049 INFO L225 Difference]: With dead ends: 68 [2023-12-16 16:30:28,049 INFO L226 Difference]: Without dead ends: 66 [2023-12-16 16:30:28,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-16 16:30:28,050 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:28,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 158 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 16:30:28,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-16 16:30:28,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2023-12-16 16:30:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.131578947368421) internal successors, (43), 41 states have internal predecessors, (43), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-16 16:30:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2023-12-16 16:30:28,062 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 27 [2023-12-16 16:30:28,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:28,062 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2023-12-16 16:30:28,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 16:30:28,062 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2023-12-16 16:30:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 16:30:28,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:28,063 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:28,068 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 [2023-12-16 16:30:28,266 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 [2023-12-16 16:30:28,266 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:28,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:28,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1758328766, now seen corresponding path program 1 times [2023-12-16 16:30:28,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:28,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928376308] [2023-12-16 16:30:28,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:28,267 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:28,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:28,268 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) [2023-12-16 16:30:28,269 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 [2023-12-16 16:30:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:28,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 16:30:28,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 16:30:28,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:28,488 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 16:30:28,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:28,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928376308] [2023-12-16 16:30:28,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928376308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:28,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:28,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 16:30:28,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860688159] [2023-12-16 16:30:28,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:28,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 16:30:28,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:28,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 16:30:28,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 16:30:28,491 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-16 16:30:28,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:28,820 INFO L93 Difference]: Finished difference Result 122 states and 169 transitions. [2023-12-16 16:30:28,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 16:30:28,820 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 45 [2023-12-16 16:30:28,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:28,822 INFO L225 Difference]: With dead ends: 122 [2023-12-16 16:30:28,822 INFO L226 Difference]: Without dead ends: 120 [2023-12-16 16:30:28,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-12-16 16:30:28,823 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 47 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:28,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 216 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 16:30:28,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-16 16:30:28,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 102. [2023-12-16 16:30:28,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 63 states have internal predecessors, (71), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (34), 30 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 16:30:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 140 transitions. [2023-12-16 16:30:28,842 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 140 transitions. Word has length 45 [2023-12-16 16:30:28,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:28,842 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 140 transitions. [2023-12-16 16:30:28,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-16 16:30:28,843 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 140 transitions. [2023-12-16 16:30:28,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-16 16:30:28,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:28,844 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:28,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-16 16:30:29,046 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 [2023-12-16 16:30:29,047 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:29,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:29,047 INFO L85 PathProgramCache]: Analyzing trace with hash -636654600, now seen corresponding path program 1 times [2023-12-16 16:30:29,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:29,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957672992] [2023-12-16 16:30:29,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:29,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:29,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:29,049 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) [2023-12-16 16:30:29,054 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 [2023-12-16 16:30:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:29,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 16:30:29,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 16:30:29,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:29,236 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 16:30:29,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:29,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957672992] [2023-12-16 16:30:29,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957672992] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:29,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:29,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 16:30:29,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128859681] [2023-12-16 16:30:29,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:29,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 16:30:29,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:29,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 16:30:29,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 16:30:29,239 INFO L87 Difference]: Start difference. First operand 102 states and 140 transitions. Second operand has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-16 16:30:29,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:29,470 INFO L93 Difference]: Finished difference Result 128 states and 175 transitions. [2023-12-16 16:30:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 16:30:29,470 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 46 [2023-12-16 16:30:29,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:29,472 INFO L225 Difference]: With dead ends: 128 [2023-12-16 16:30:29,472 INFO L226 Difference]: Without dead ends: 126 [2023-12-16 16:30:29,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-12-16 16:30:29,473 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 54 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:29,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 324 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 16:30:29,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-16 16:30:29,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 106. [2023-12-16 16:30:29,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 66 states have internal predecessors, (74), 35 states have call successors, (35), 9 states have call predecessors, (35), 9 states have return successors, (34), 30 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 16:30:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2023-12-16 16:30:29,488 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 143 transitions. Word has length 46 [2023-12-16 16:30:29,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:29,488 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 143 transitions. [2023-12-16 16:30:29,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-16 16:30:29,488 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 143 transitions. [2023-12-16 16:30:29,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 16:30:29,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:29,489 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:29,499 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 [2023-12-16 16:30:29,692 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 [2023-12-16 16:30:29,693 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:29,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:29,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1160009689, now seen corresponding path program 1 times [2023-12-16 16:30:29,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:29,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596514676] [2023-12-16 16:30:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:30:29,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:29,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:29,695 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) [2023-12-16 16:30:29,697 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 [2023-12-16 16:30:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:30:29,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 16:30:29,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:29,963 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 16:30:29,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 16:30:30,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:30,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596514676] [2023-12-16 16:30:30,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596514676] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:30,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:30,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-16 16:30:30,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76071441] [2023-12-16 16:30:30,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:30,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 16:30:30,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:30,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 16:30:30,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-16 16:30:30,149 INFO L87 Difference]: Start difference. First operand 106 states and 143 transitions. Second operand has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-12-16 16:30:30,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:30,678 INFO L93 Difference]: Finished difference Result 140 states and 190 transitions. [2023-12-16 16:30:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 16:30:30,679 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 50 [2023-12-16 16:30:30,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:30,681 INFO L225 Difference]: With dead ends: 140 [2023-12-16 16:30:30,682 INFO L226 Difference]: Without dead ends: 125 [2023-12-16 16:30:30,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2023-12-16 16:30:30,683 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 49 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:30,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 295 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 16:30:30,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-16 16:30:30,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 114. [2023-12-16 16:30:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 67 states have (on average 1.1343283582089552) internal successors, (76), 72 states have internal predecessors, (76), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (34), 30 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 16:30:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 145 transitions. [2023-12-16 16:30:30,699 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 145 transitions. Word has length 50 [2023-12-16 16:30:30,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:30,699 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 145 transitions. [2023-12-16 16:30:30,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-12-16 16:30:30,700 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 145 transitions. [2023-12-16 16:30:30,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 16:30:30,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:30,700 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:30,709 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 [2023-12-16 16:30:30,903 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 [2023-12-16 16:30:30,903 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:30,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:30,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1190365469, now seen corresponding path program 2 times [2023-12-16 16:30:30,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:30,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905319168] [2023-12-16 16:30:30,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:30:30,904 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:30,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:30,905 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) [2023-12-16 16:30:30,907 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 [2023-12-16 16:30:30,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:30:30,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:30:30,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 16:30:30,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 16:30:31,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:31,798 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 16:30:31,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:31,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905319168] [2023-12-16 16:30:31,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905319168] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:31,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:31,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-12-16 16:30:31,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87457364] [2023-12-16 16:30:31,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:31,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 16:30:31,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:31,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 16:30:31,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-12-16 16:30:31,800 INFO L87 Difference]: Start difference. First operand 114 states and 145 transitions. Second operand has 19 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 8 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-16 16:30:32,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:32,745 INFO L93 Difference]: Finished difference Result 138 states and 175 transitions. [2023-12-16 16:30:32,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 16:30:32,746 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 8 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 51 [2023-12-16 16:30:32,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:32,747 INFO L225 Difference]: With dead ends: 138 [2023-12-16 16:30:32,747 INFO L226 Difference]: Without dead ends: 136 [2023-12-16 16:30:32,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2023-12-16 16:30:32,748 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 70 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:32,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 357 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 16:30:32,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-16 16:30:32,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 122. [2023-12-16 16:30:32,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 78 states have internal predecessors, (82), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 30 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 16:30:32,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 151 transitions. [2023-12-16 16:30:32,765 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 151 transitions. Word has length 51 [2023-12-16 16:30:32,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:32,766 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 151 transitions. [2023-12-16 16:30:32,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 8 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-16 16:30:32,766 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 151 transitions. [2023-12-16 16:30:32,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-16 16:30:32,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:32,769 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:32,775 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 [2023-12-16 16:30:32,972 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 [2023-12-16 16:30:32,972 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:32,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:32,973 INFO L85 PathProgramCache]: Analyzing trace with hash -239313979, now seen corresponding path program 2 times [2023-12-16 16:30:32,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:32,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117106763] [2023-12-16 16:30:32,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:30:32,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:32,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:32,975 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) [2023-12-16 16:30:33,007 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 [2023-12-16 16:30:33,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:30:33,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:30:33,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 16:30:33,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 91 proven. 47 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-12-16 16:30:33,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 91 proven. 47 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-12-16 16:30:34,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:34,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117106763] [2023-12-16 16:30:34,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117106763] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:34,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:34,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 25 [2023-12-16 16:30:34,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729340025] [2023-12-16 16:30:34,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:34,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 16:30:34,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:34,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 16:30:34,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2023-12-16 16:30:34,734 INFO L87 Difference]: Start difference. First operand 122 states and 151 transitions. Second operand has 25 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 12 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 16 states have call predecessors, (30), 12 states have call successors, (30) [2023-12-16 16:30:36,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:36,244 INFO L93 Difference]: Finished difference Result 168 states and 220 transitions. [2023-12-16 16:30:36,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 16:30:36,245 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 12 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 16 states have call predecessors, (30), 12 states have call successors, (30) Word has length 98 [2023-12-16 16:30:36,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:36,246 INFO L225 Difference]: With dead ends: 168 [2023-12-16 16:30:36,246 INFO L226 Difference]: Without dead ends: 155 [2023-12-16 16:30:36,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=337, Invalid=1469, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 16:30:36,248 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 131 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:36,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 485 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 16:30:36,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-16 16:30:36,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 147. [2023-12-16 16:30:36,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 87 states have (on average 1.103448275862069) internal successors, (96), 92 states have internal predecessors, (96), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (42), 39 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 16:30:36,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 182 transitions. [2023-12-16 16:30:36,267 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 182 transitions. Word has length 98 [2023-12-16 16:30:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:36,268 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 182 transitions. [2023-12-16 16:30:36,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 12 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 16 states have call predecessors, (30), 12 states have call successors, (30) [2023-12-16 16:30:36,269 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 182 transitions. [2023-12-16 16:30:36,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 16:30:36,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:36,275 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:36,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-16 16:30:36,477 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 [2023-12-16 16:30:36,478 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:36,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:36,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1623404479, now seen corresponding path program 3 times [2023-12-16 16:30:36,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:36,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158788526] [2023-12-16 16:30:36,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 16:30:36,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:36,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:36,480 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) [2023-12-16 16:30:36,491 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 [2023-12-16 16:30:36,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-16 16:30:36,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:30:36,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-16 16:30:36,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 231 proven. 97 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2023-12-16 16:30:37,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:39,258 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 205 proven. 93 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2023-12-16 16:30:39,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:39,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158788526] [2023-12-16 16:30:39,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158788526] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:39,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:39,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 30 [2023-12-16 16:30:39,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225347882] [2023-12-16 16:30:39,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:39,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-16 16:30:39,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:39,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-16 16:30:39,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2023-12-16 16:30:39,262 INFO L87 Difference]: Start difference. First operand 147 states and 182 transitions. Second operand has 30 states, 24 states have (on average 2.5) internal successors, (60), 23 states have internal predecessors, (60), 17 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (38), 18 states have call predecessors, (38), 16 states have call successors, (38) [2023-12-16 16:30:45,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:45,633 INFO L93 Difference]: Finished difference Result 182 states and 235 transitions. [2023-12-16 16:30:45,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-16 16:30:45,634 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 24 states have (on average 2.5) internal successors, (60), 23 states have internal predecessors, (60), 17 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (38), 18 states have call predecessors, (38), 16 states have call successors, (38) Word has length 123 [2023-12-16 16:30:45,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:45,635 INFO L225 Difference]: With dead ends: 182 [2023-12-16 16:30:45,635 INFO L226 Difference]: Without dead ends: 180 [2023-12-16 16:30:45,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=850, Invalid=2572, Unknown=0, NotChecked=0, Total=3422 [2023-12-16 16:30:45,637 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 182 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:45,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 519 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 16:30:45,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-16 16:30:45,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 170. [2023-12-16 16:30:45,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 99 states have (on average 1.1313131313131313) internal successors, (112), 104 states have internal predecessors, (112), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-16 16:30:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 218 transitions. [2023-12-16 16:30:45,663 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 218 transitions. Word has length 123 [2023-12-16 16:30:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:45,663 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 218 transitions. [2023-12-16 16:30:45,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 24 states have (on average 2.5) internal successors, (60), 23 states have internal predecessors, (60), 17 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (38), 18 states have call predecessors, (38), 16 states have call successors, (38) [2023-12-16 16:30:45,664 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 218 transitions. [2023-12-16 16:30:45,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-16 16:30:45,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:45,665 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:45,672 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 [2023-12-16 16:30:45,868 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 [2023-12-16 16:30:45,869 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:45,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:45,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1994423958, now seen corresponding path program 2 times [2023-12-16 16:30:45,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:45,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351415880] [2023-12-16 16:30:45,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:30:45,869 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:45,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:45,871 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) [2023-12-16 16:30:45,872 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 [2023-12-16 16:30:45,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:30:45,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:30:45,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 16:30:45,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 44 proven. 90 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-16 16:30:46,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 44 proven. 90 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-16 16:30:46,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:46,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351415880] [2023-12-16 16:30:46,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351415880] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:46,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:46,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-16 16:30:46,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338000908] [2023-12-16 16:30:46,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:46,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 16:30:46,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:46,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 16:30:46,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-12-16 16:30:46,338 INFO L87 Difference]: Start difference. First operand 170 states and 218 transitions. Second operand has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 14 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2023-12-16 16:30:47,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:47,121 INFO L93 Difference]: Finished difference Result 240 states and 328 transitions. [2023-12-16 16:30:47,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 16:30:47,121 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 14 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) Word has length 141 [2023-12-16 16:30:47,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:47,123 INFO L225 Difference]: With dead ends: 240 [2023-12-16 16:30:47,123 INFO L226 Difference]: Without dead ends: 230 [2023-12-16 16:30:47,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=512, Unknown=0, NotChecked=0, Total=702 [2023-12-16 16:30:47,124 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 116 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:47,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 610 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 16:30:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-16 16:30:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 202. [2023-12-16 16:30:47,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 117 states have (on average 1.1452991452991452) internal successors, (134), 122 states have internal predecessors, (134), 67 states have call successors, (67), 17 states have call predecessors, (67), 17 states have return successors, (66), 62 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-16 16:30:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 267 transitions. [2023-12-16 16:30:47,152 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 267 transitions. Word has length 141 [2023-12-16 16:30:47,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:47,152 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 267 transitions. [2023-12-16 16:30:47,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 14 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2023-12-16 16:30:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 267 transitions. [2023-12-16 16:30:47,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 16:30:47,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:47,153 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:47,158 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 [2023-12-16 16:30:47,354 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 [2023-12-16 16:30:47,354 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:47,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash 634329040, now seen corresponding path program 4 times [2023-12-16 16:30:47,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:47,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144500469] [2023-12-16 16:30:47,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 16:30:47,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:47,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:47,356 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) [2023-12-16 16:30:47,359 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 [2023-12-16 16:30:47,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 16:30:47,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:30:47,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 16:30:47,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 44 proven. 115 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-16 16:30:47,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 44 proven. 115 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-16 16:30:47,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:47,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144500469] [2023-12-16 16:30:47,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144500469] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:47,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:47,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-16 16:30:47,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239462218] [2023-12-16 16:30:47,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:47,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 16:30:47,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:47,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 16:30:47,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-12-16 16:30:47,794 INFO L87 Difference]: Start difference. First operand 202 states and 267 transitions. Second operand has 20 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 14 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2023-12-16 16:30:48,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:48,388 INFO L93 Difference]: Finished difference Result 238 states and 318 transitions. [2023-12-16 16:30:48,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 16:30:48,389 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 14 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) Word has length 142 [2023-12-16 16:30:48,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:48,390 INFO L225 Difference]: With dead ends: 238 [2023-12-16 16:30:48,390 INFO L226 Difference]: Without dead ends: 236 [2023-12-16 16:30:48,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=512, Unknown=0, NotChecked=0, Total=702 [2023-12-16 16:30:48,391 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 117 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:48,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 719 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 16:30:48,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-16 16:30:48,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 206. [2023-12-16 16:30:48,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 120 states have (on average 1.1416666666666666) internal successors, (137), 125 states have internal predecessors, (137), 67 states have call successors, (67), 18 states have call predecessors, (67), 18 states have return successors, (66), 62 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-16 16:30:48,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 270 transitions. [2023-12-16 16:30:48,420 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 270 transitions. Word has length 142 [2023-12-16 16:30:48,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:48,420 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 270 transitions. [2023-12-16 16:30:48,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 14 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2023-12-16 16:30:48,420 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 270 transitions. [2023-12-16 16:30:48,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-16 16:30:48,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:48,422 INFO L195 NwaCegarLoop]: trace histogram [32, 31, 31, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:48,430 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 [2023-12-16 16:30:48,628 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 [2023-12-16 16:30:48,628 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:48,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:48,629 INFO L85 PathProgramCache]: Analyzing trace with hash -317437027, now seen corresponding path program 3 times [2023-12-16 16:30:48,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:48,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34980495] [2023-12-16 16:30:48,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 16:30:48,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:30:48,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:48,630 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:48,631 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 (17)] Waiting until timeout for monitored process [2023-12-16 16:30:48,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 16:30:48,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:30:48,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 16:30:48,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2104 backedges. 311 proven. 47 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-12-16 16:30:49,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:49,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:49,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34980495] [2023-12-16 16:30:49,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34980495] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 16:30:49,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1690025174] [2023-12-16 16:30:49,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 16:30:49,959 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 16:30:49,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 16:30:49,964 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 16:30:49,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-16 16:30:50,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 16:30:50,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:30:50,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 16:30:50,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:50,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2104 backedges. 293 proven. 65 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-12-16 16:30:50,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:51,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1690025174] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 16:30:51,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:51,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 18 [2023-12-16 16:30:51,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122269461] [2023-12-16 16:30:51,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:51,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 16:30:51,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:51,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 16:30:51,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2023-12-16 16:30:51,261 INFO L87 Difference]: Start difference. First operand 206 states and 270 transitions. Second operand has 18 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2023-12-16 16:30:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:30:52,322 INFO L93 Difference]: Finished difference Result 212 states and 275 transitions. [2023-12-16 16:30:52,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 16:30:52,323 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) Word has length 194 [2023-12-16 16:30:52,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:30:52,325 INFO L225 Difference]: With dead ends: 212 [2023-12-16 16:30:52,325 INFO L226 Difference]: Without dead ends: 198 [2023-12-16 16:30:52,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=303, Invalid=1257, Unknown=0, NotChecked=0, Total=1560 [2023-12-16 16:30:52,326 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 40 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 16:30:52,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 128 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 16:30:52,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-12-16 16:30:52,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2023-12-16 16:30:52,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 121 states have (on average 1.0082644628099173) internal successors, (122), 122 states have internal predecessors, (122), 57 states have call successors, (57), 19 states have call predecessors, (57), 19 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-16 16:30:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 236 transitions. [2023-12-16 16:30:52,378 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 236 transitions. Word has length 194 [2023-12-16 16:30:52,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:30:52,380 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 236 transitions. [2023-12-16 16:30:52,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2023-12-16 16:30:52,380 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 236 transitions. [2023-12-16 16:30:52,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-16 16:30:52,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:30:52,384 INFO L195 NwaCegarLoop]: trace histogram [44, 43, 43, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2023-12-16 16:30:52,388 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 (17)] Forceful destruction successful, exit code 0 [2023-12-16 16:30:52,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-16 16:30:52,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 16:30:52,789 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:30:52,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:30:52,789 INFO L85 PathProgramCache]: Analyzing trace with hash -417007363, now seen corresponding path program 5 times [2023-12-16 16:30:52,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:30:52,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225128964] [2023-12-16 16:30:52,790 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 16:30:52,790 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 [2023-12-16 16:30:52,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:30:52,791 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:30:52,793 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 (19)] Waiting until timeout for monitored process [2023-12-16 16:30:52,957 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-12-16 16:30:52,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:30:52,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-16 16:30:52,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:30:54,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4138 backedges. 871 proven. 825 refuted. 0 times theorem prover too weak. 2442 trivial. 0 not checked. [2023-12-16 16:30:54,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:30:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4138 backedges. 844 proven. 672 refuted. 0 times theorem prover too weak. 2622 trivial. 0 not checked. [2023-12-16 16:30:59,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:30:59,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225128964] [2023-12-16 16:30:59,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225128964] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:30:59,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:30:59,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27] total 47 [2023-12-16 16:30:59,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932839897] [2023-12-16 16:30:59,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:30:59,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-16 16:30:59,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:30:59,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-16 16:30:59,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1738, Unknown=0, NotChecked=0, Total=2162 [2023-12-16 16:30:59,742 INFO L87 Difference]: Start difference. First operand 198 states and 236 transitions. Second operand has 47 states, 37 states have (on average 2.864864864864865) internal successors, (106), 36 states have internal predecessors, (106), 34 states have call successors, (88), 3 states have call predecessors, (88), 2 states have return successors, (86), 35 states have call predecessors, (86), 33 states have call successors, (86) [2023-12-16 16:31:24,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:31:24,489 INFO L93 Difference]: Finished difference Result 280 states and 350 transitions. [2023-12-16 16:31:24,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-16 16:31:24,489 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 37 states have (on average 2.864864864864865) internal successors, (106), 36 states have internal predecessors, (106), 34 states have call successors, (88), 3 states have call predecessors, (88), 2 states have return successors, (86), 35 states have call predecessors, (86), 33 states have call successors, (86) Word has length 267 [2023-12-16 16:31:24,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:31:24,491 INFO L225 Difference]: With dead ends: 280 [2023-12-16 16:31:24,491 INFO L226 Difference]: Without dead ends: 278 [2023-12-16 16:31:24,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 486 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2802 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=2604, Invalid=8108, Unknown=0, NotChecked=0, Total=10712 [2023-12-16 16:31:24,494 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 133 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 16:31:24,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1384 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 16:31:24,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-16 16:31:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2023-12-16 16:31:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 163 states have (on average 1.0061349693251533) internal successors, (164), 164 states have internal predecessors, (164), 92 states have call successors, (92), 22 states have call predecessors, (92), 22 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-16 16:31:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 348 transitions. [2023-12-16 16:31:24,564 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 348 transitions. Word has length 267 [2023-12-16 16:31:24,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:31:24,564 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 348 transitions. [2023-12-16 16:31:24,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 37 states have (on average 2.864864864864865) internal successors, (106), 36 states have internal predecessors, (106), 34 states have call successors, (88), 3 states have call predecessors, (88), 2 states have return successors, (86), 35 states have call predecessors, (86), 33 states have call successors, (86) [2023-12-16 16:31:24,565 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 348 transitions. [2023-12-16 16:31:24,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-12-16 16:31:24,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:31:24,568 INFO L195 NwaCegarLoop]: trace histogram [55, 54, 54, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2023-12-16 16:31:24,576 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 (19)] Forceful destruction successful, exit code 0 [2023-12-16 16:31:24,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:31:24,774 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:31:24,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:31:24,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1715335296, now seen corresponding path program 6 times [2023-12-16 16:31:24,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:31:24,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061062895] [2023-12-16 16:31:24,775 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 16:31:24,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:31:24,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:31:24,776 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:31:24,796 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 (20)] Waiting until timeout for monitored process [2023-12-16 16:31:24,858 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-16 16:31:24,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:31:24,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 16:31:24,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:31:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 6547 backedges. 418 proven. 105 refuted. 0 times theorem prover too weak. 6024 trivial. 0 not checked. [2023-12-16 16:31:25,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:31:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6547 backedges. 509 proven. 14 refuted. 0 times theorem prover too weak. 6024 trivial. 0 not checked. [2023-12-16 16:31:25,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:31:25,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061062895] [2023-12-16 16:31:25,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061062895] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:31:25,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:31:25,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2023-12-16 16:31:25,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784033263] [2023-12-16 16:31:25,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:31:25,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 16:31:25,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:31:25,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 16:31:25,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-12-16 16:31:25,315 INFO L87 Difference]: Start difference. First operand 278 states and 348 transitions. Second operand has 15 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-16 16:31:25,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:31:25,500 INFO L93 Difference]: Finished difference Result 284 states and 353 transitions. [2023-12-16 16:31:25,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 16:31:25,501 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 334 [2023-12-16 16:31:25,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:31:25,503 INFO L225 Difference]: With dead ends: 284 [2023-12-16 16:31:25,503 INFO L226 Difference]: Without dead ends: 282 [2023-12-16 16:31:25,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-16 16:31:25,504 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 19 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:31:25,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 93 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:31:25,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-12-16 16:31:25,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2023-12-16 16:31:25,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 166 states have (on average 1.0060240963855422) internal successors, (167), 167 states have internal predecessors, (167), 92 states have call successors, (92), 23 states have call predecessors, (92), 23 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-16 16:31:25,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 351 transitions. [2023-12-16 16:31:25,571 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 351 transitions. Word has length 334 [2023-12-16 16:31:25,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:31:25,572 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 351 transitions. [2023-12-16 16:31:25,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-16 16:31:25,572 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 351 transitions. [2023-12-16 16:31:25,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-16 16:31:25,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:31:25,580 INFO L195 NwaCegarLoop]: trace histogram [92, 91, 91, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1] [2023-12-16 16:31:25,588 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 (20)] Forceful destruction successful, exit code 0 [2023-12-16 16:31:25,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:31:25,783 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:31:25,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:31:25,783 INFO L85 PathProgramCache]: Analyzing trace with hash 282796661, now seen corresponding path program 7 times [2023-12-16 16:31:25,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:31:25,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943057900] [2023-12-16 16:31:25,784 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 16:31:25,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:31:25,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:31:25,785 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:31:25,786 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 (21)] Waiting until timeout for monitored process [2023-12-16 16:31:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:31:26,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-16 16:31:26,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 16:31:29,862 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:31:29,869 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 16:31:29,876 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 (21)] Forceful destruction successful, exit code 0 [2023-12-16 16:31:29,898 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 (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:31:30,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:31:30,076 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 556 with TraceHistMax 92,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-7-1 term,while SimplifyDDA2 was simplifying 7 xjuncts wrt. a ATOM-1 context. [2023-12-16 16:31:30,080 INFO L445 BasicCegarLoop]: Path program histogram: [7, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:31:30,082 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 16:31:30,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:31:30 BoogieIcfgContainer [2023-12-16 16:31:30,084 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 16:31:30,085 INFO L158 Benchmark]: Toolchain (without parser) took 66171.42ms. Allocated memory was 190.8MB in the beginning and 335.5MB in the end (delta: 144.7MB). Free memory was 144.9MB in the beginning and 210.5MB in the end (delta: -65.6MB). Peak memory consumption was 79.4MB. Max. memory is 8.0GB. [2023-12-16 16:31:30,085 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 190.8MB. Free memory is still 147.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:31:30,085 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.00ms. Allocated memory is still 190.8MB. Free memory was 144.9MB in the beginning and 133.3MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 16:31:30,085 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.29ms. Allocated memory is still 190.8MB. Free memory was 133.3MB in the beginning and 131.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:31:30,086 INFO L158 Benchmark]: Boogie Preprocessor took 47.69ms. Allocated memory is still 190.8MB. Free memory was 131.7MB in the beginning and 130.0MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 16:31:30,086 INFO L158 Benchmark]: RCFGBuilder took 271.28ms. Allocated memory is still 190.8MB. Free memory was 130.0MB in the beginning and 117.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 16:31:30,086 INFO L158 Benchmark]: TraceAbstraction took 65602.33ms. Allocated memory was 190.8MB in the beginning and 335.5MB in the end (delta: 144.7MB). Free memory was 116.6MB in the beginning and 210.5MB in the end (delta: -93.9MB). Peak memory consumption was 51.1MB. Max. memory is 8.0GB. [2023-12-16 16:31:30,087 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 190.8MB. Free memory is still 147.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.00ms. Allocated memory is still 190.8MB. Free memory was 144.9MB in the beginning and 133.3MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.29ms. Allocated memory is still 190.8MB. Free memory was 133.3MB in the beginning and 131.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.69ms. Allocated memory is still 190.8MB. Free memory was 131.7MB in the beginning and 130.0MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 271.28ms. Allocated memory is still 190.8MB. Free memory was 130.0MB in the beginning and 117.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 65602.33ms. Allocated memory was 190.8MB in the beginning and 335.5MB in the end (delta: 144.7MB). Free memory was 116.6MB in the beginning and 210.5MB in the end (delta: -93.9MB). Peak memory consumption was 51.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 556 with TraceHistMax 92,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-7-1 term,while SimplifyDDA2 was simplifying 7 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65.5s, OverallIterations: 19, TraceHistogramMax: 92, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 38.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1212 SdHoareTripleChecker+Valid, 8.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1069 mSDsluCounter, 5855 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5130 mSDsCounter, 1319 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5111 IncrementalHoareTripleChecker+Invalid, 6430 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1319 mSolverCounterUnsat, 725 mSDtfsCounter, 5111 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3344 GetRequests, 2923 SyntacticMatches, 3 SemanticMatches, 418 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4729 ImplicationChecksByTransitivity, 36.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=18, InterpolantAutomatonStates: 292, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 18 MinimizatonAttempts, 163 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 1815 NumberOfCodeBlocks, 1309 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 3083 ConstructedInterpolants, 16 QuantifiedInterpolants, 13680 SizeOfPredicates, 96 NumberOfNonLiveVariables, 2039 ConjunctsInSsa, 284 ConjunctsInUnsatCore, 29 InterpolantComputations, 7 PerfectInterpolantSequences, 30736/33196 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