/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver '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' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 18:05:36,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 18:05:36,143 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 18:05:36,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 18:05:36,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 18:05:36,194 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 18:05:36,195 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 18:05:36,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 18:05:36,196 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 18:05:36,197 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 18:05:36,197 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 18:05:36,197 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 18:05:36,198 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 18:05:36,198 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 18:05:36,199 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 18:05:36,199 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 18:05:36,202 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 18:05:36,204 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 18:05:36,205 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 18:05:36,205 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 18:05:36,205 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 18:05:36,205 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 18:05:36,206 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 18:05:36,206 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 18:05:36,206 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 18:05:36,207 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 18:05:36,207 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 18:05:36,207 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 18:05:36,207 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 18:05:36,208 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 18:05:36,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 18:05:36,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 18:05:36,209 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 18:05:36,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 18:05:36,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 18:05:36,211 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 18:05:36,211 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 18:05:36,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 18:05:36,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 18:05:36,212 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 18:05:36,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 18:05:36,213 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 18:05:36,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-01 18:05:36,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 18:05:36,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 18:05:36,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 18:05:36,570 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 18:05:36,570 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 18:05:36,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c [2024-11-01 18:05:38,238 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 18:05:38,608 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 18:05:38,609 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c [2024-11-01 18:05:38,633 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b45275c7/74244f21a9f74d18ae7ad35e385229db/FLAGc815319de [2024-11-01 18:05:38,656 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b45275c7/74244f21a9f74d18ae7ad35e385229db [2024-11-01 18:05:38,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 18:05:38,661 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 18:05:38,665 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 18:05:38,666 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 18:05:38,670 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 18:05:38,671 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 06:05:38" (1/1) ... [2024-11-01 18:05:38,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9181586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 06:05:38, skipping insertion in model container [2024-11-01 18:05:38,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 06:05:38" (1/1) ... [2024-11-01 18:05:38,729 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 18:05:38,943 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c[1311,1324] [2024-11-01 18:05:39,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 18:05:39,207 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 18:05:39,221 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c[1311,1324] [2024-11-01 18:05:39,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 18:05:39,356 INFO L204 MainTranslator]: Completed translation [2024-11-01 18:05:39,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 06:05:39 WrapperNode [2024-11-01 18:05:39,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 18:05:39,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 18:05:39,361 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 18:05:39,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 18:05:39,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 06:05:39" (1/1) ... [2024-11-01 18:05:39,399 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 06:05:39" (1/1) ... [2024-11-01 18:05:39,469 INFO L138 Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 656 [2024-11-01 18:05:39,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 18:05:39,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 18:05:39,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 18:05:39,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 18:05:39,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 06:05:39" (1/1) ... [2024-11-01 18:05:39,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 06:05:39" (1/1) ... [2024-11-01 18:05:39,502 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 06:05:39" (1/1) ... [2024-11-01 18:05:39,547 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]. [2024-11-01 18:05:39,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 06:05:39" (1/1) ... [2024-11-01 18:05:39,548 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 06:05:39" (1/1) ... [2024-11-01 18:05:39,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 06:05:39" (1/1) ... [2024-11-01 18:05:39,575 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 06:05:39" (1/1) ... [2024-11-01 18:05:39,579 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 06:05:39" (1/1) ... [2024-11-01 18:05:39,584 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 06:05:39" (1/1) ... [2024-11-01 18:05:39,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 18:05:39,597 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 18:05:39,597 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 18:05:39,600 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 18:05:39,602 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 06:05:39" (1/1) ... [2024-11-01 18:05:39,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 18:05:39,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 18:05:39,660 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) [2024-11-01 18:05:39,664 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 [2024-11-01 18:05:39,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 18:05:39,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 18:05:39,686 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 18:05:39,686 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 18:05:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 18:05:39,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 18:05:39,875 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 18:05:39,877 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 18:05:40,758 INFO L? ?]: Removed 267 outVars from TransFormulas that were not future-live. [2024-11-01 18:05:40,758 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 18:05:40,769 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 18:05:40,770 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 18:05:40,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 06:05:40 BoogieIcfgContainer [2024-11-01 18:05:40,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 18:05:40,773 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 18:05:40,773 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 18:05:40,776 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 18:05:40,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 06:05:38" (1/3) ... [2024-11-01 18:05:40,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419d4a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 06:05:40, skipping insertion in model container [2024-11-01 18:05:40,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 06:05:39" (2/3) ... [2024-11-01 18:05:40,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419d4a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 06:05:40, skipping insertion in model container [2024-11-01 18:05:40,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 06:05:40" (3/3) ... [2024-11-01 18:05:40,779 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c [2024-11-01 18:05:40,797 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 18:05:40,797 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 18:05:40,860 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 18:05:40,866 INFO L333 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, 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;@56620445, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 18:05:40,867 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 18:05:40,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-01 18:05:40,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-01 18:05:40,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 18:05:40,879 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 18:05:40,880 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 18:05:40,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 18:05:40,886 INFO L85 PathProgramCache]: Analyzing trace with hash 896107007, now seen corresponding path program 1 times [2024-11-01 18:05:40,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 18:05:40,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202995858] [2024-11-01 18:05:40,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 18:05:40,896 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 [2024-11-01 18:05:40,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-01 18:05:40,898 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) [2024-11-01 18:05:40,927 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 [2024-11-01 18:05:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 18:05:41,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-01 18:05:41,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 18:05:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-01 18:05:41,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 18:05:42,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-01 18:05:42,070 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 18:05:42,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202995858] [2024-11-01 18:05:42,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [202995858] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 18:05:42,071 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 18:05:42,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-01 18:05:42,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255240247] [2024-11-01 18:05:42,075 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 18:05:42,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-01 18:05:42,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 18:05:42,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-01 18:05:42,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 18:05:42,105 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-01 18:05:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 18:05:42,417 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2024-11-01 18:05:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 18:05:42,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 17 [2024-11-01 18:05:42,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 18:05:42,425 INFO L225 Difference]: With dead ends: 38 [2024-11-01 18:05:42,425 INFO L226 Difference]: Without dead ends: 22 [2024-11-01 18:05:42,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-01 18:05:42,432 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-01 18:05:42,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 42 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-01 18:05:42,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-01 18:05:42,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-11-01 18:05:42,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-01 18:05:42,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-01 18:05:42,465 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 17 [2024-11-01 18:05:42,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 18:05:42,466 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-01 18:05:42,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-01 18:05:42,467 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-01 18:05:42,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-01 18:05:42,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 18:05:42,468 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-01 18:05:42,475 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 [2024-11-01 18:05:42,668 WARN L453 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 [2024-11-01 18:05:42,669 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 18:05:42,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 18:05:42,670 INFO L85 PathProgramCache]: Analyzing trace with hash 91156387, now seen corresponding path program 1 times [2024-11-01 18:05:42,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 18:05:42,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761060427] [2024-11-01 18:05:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 18:05:42,671 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 [2024-11-01 18:05:42,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-01 18:05:42,672 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) [2024-11-01 18:05:42,674 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 [2024-11-01 18:05:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 18:05:43,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-01 18:05:43,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 18:05:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-01 18:05:43,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 18:05:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-01 18:05:44,520 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 18:05:44,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761060427] [2024-11-01 18:05:44,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1761060427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 18:05:44,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 18:05:44,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 18:05:44,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72197343] [2024-11-01 18:05:44,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 18:05:44,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 18:05:44,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 18:05:44,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 18:05:44,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-01 18:05:44,525 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-01 18:05:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 18:05:47,895 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2024-11-01 18:05:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-01 18:05:47,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 32 [2024-11-01 18:05:47,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 18:05:47,897 INFO L225 Difference]: With dead ends: 45 [2024-11-01 18:05:47,897 INFO L226 Difference]: Without dead ends: 43 [2024-11-01 18:05:47,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-01 18:05:47,899 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-01 18:05:47,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 50 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-01 18:05:47,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-01 18:05:47,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-11-01 18:05:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 18:05:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2024-11-01 18:05:47,914 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 32 [2024-11-01 18:05:47,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 18:05:47,914 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2024-11-01 18:05:47,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-01 18:05:47,914 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2024-11-01 18:05:47,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-01 18:05:47,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 18:05:47,920 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2024-11-01 18:05:47,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-01 18:05:48,120 WARN L453 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 [2024-11-01 18:05:48,121 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 18:05:48,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 18:05:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash 257648895, now seen corresponding path program 2 times [2024-11-01 18:05:48,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 18:05:48,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316262861] [2024-11-01 18:05:48,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 18:05:48,123 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 [2024-11-01 18:05:48,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-01 18:05:48,124 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) [2024-11-01 18:05:48,126 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 [2024-11-01 18:05:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 18:05:51,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-01 18:05:51,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 18:05:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-01 18:05:53,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 18:05:56,343 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-01 18:05:56,344 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 18:05:56,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316262861] [2024-11-01 18:05:56,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [316262861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 18:05:56,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 18:05:56,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-01 18:05:56,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904024702] [2024-11-01 18:05:56,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 18:05:56,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-01 18:05:56,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 18:05:56,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-01 18:05:56,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-01 18:05:56,349 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-01 18:05:58,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-01 18:06:00,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 18:06:00,341 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2024-11-01 18:06:00,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-01 18:06:00,342 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 77 [2024-11-01 18:06:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 18:06:00,344 INFO L225 Difference]: With dead ends: 59 [2024-11-01 18:06:00,344 INFO L226 Difference]: Without dead ends: 57 [2024-11-01 18:06:00,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2024-11-01 18:06:00,345 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-01 18:06:00,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 178 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-01 18:06:00,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-01 18:06:00,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2024-11-01 18:06:00,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-01 18:06:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2024-11-01 18:06:00,375 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 77 [2024-11-01 18:06:00,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 18:06:00,375 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2024-11-01 18:06:00,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-01 18:06:00,376 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2024-11-01 18:06:00,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-01 18:06:00,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 18:06:00,378 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1] [2024-11-01 18:06:00,406 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 (4)] Ended with exit code 0 [2024-11-01 18:06:00,582 WARN L453 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 [2024-11-01 18:06:00,583 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 18:06:00,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 18:06:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash -761811841, now seen corresponding path program 3 times [2024-11-01 18:06:00,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 18:06:00,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911453156] [2024-11-01 18:06:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 18:06:00,584 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 [2024-11-01 18:06:00,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-01 18:06:00,588 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) [2024-11-01 18:06:00,589 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 [2024-11-01 18:06:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 18:06:11,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 707 conjuncts are in the unsatisfiable core [2024-11-01 18:06:11,789 INFO L278 TraceCheckSpWp]: Computing forward predicates...