/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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-95.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 00:51:28,358 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 00:51:28,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 00:51:28,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 00:51:28,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 00:51:28,474 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 00:51:28,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 00:51:28,476 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 00:51:28,476 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 00:51:28,480 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 00:51:28,480 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 00:51:28,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 00:51:28,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 00:51:28,482 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 00:51:28,483 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 00:51:28,483 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 00:51:28,483 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 00:51:28,484 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 00:51:28,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 00:51:28,485 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 00:51:28,485 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 00:51:28,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 00:51:28,486 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 00:51:28,486 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 00:51:28,486 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 00:51:28,486 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 00:51:28,486 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 00:51:28,487 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 00:51:28,487 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 00:51:28,487 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 00:51:28,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 00:51:28,488 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 00:51:28,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 00:51:28,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 00:51:28,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 00:51:28,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 00:51:28,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 00:51:28,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 00:51:28,489 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 00:51:28,489 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 00:51:28,489 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 00:51:28,490 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 00:51:28,490 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 00:51:28,490 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 00:51:28,490 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 00:51:28,490 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 00:51:28,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 00:51:28,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 00:51:28,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 00:51:28,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 00:51:28,746 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 00:51:28,747 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 00:51:28,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-95.i [2023-12-23 00:51:29,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 00:51:30,246 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 00:51:30,246 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-95.i [2023-12-23 00:51:30,259 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a528bc6f0/fd75b4927eb0470f8cd54e2086af4f24/FLAG0ea4d7979 [2023-12-23 00:51:30,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a528bc6f0/fd75b4927eb0470f8cd54e2086af4f24 [2023-12-23 00:51:30,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 00:51:30,279 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 00:51:30,281 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 00:51:30,282 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 00:51:30,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 00:51:30,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:51:30" (1/1) ... [2023-12-23 00:51:30,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68fbd089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:51:30, skipping insertion in model container [2023-12-23 00:51:30,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:51:30" (1/1) ... [2023-12-23 00:51:30,334 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 00:51:30,468 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-95.i[916,929] [2023-12-23 00:51:30,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 00:51:30,561 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 00:51:30,575 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-95.i[916,929] [2023-12-23 00:51:30,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 00:51:30,672 INFO L206 MainTranslator]: Completed translation [2023-12-23 00:51:30,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:51:30 WrapperNode [2023-12-23 00:51:30,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 00:51:30,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 00:51:30,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 00:51:30,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 00:51:30,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:51:30" (1/1) ... [2023-12-23 00:51:30,697 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:51:30" (1/1) ... [2023-12-23 00:51:30,732 INFO L138 Inliner]: procedures = 27, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 281 [2023-12-23 00:51:30,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 00:51:30,733 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 00:51:30,733 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 00:51:30,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 00:51:30,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:51:30" (1/1) ... [2023-12-23 00:51:30,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:51:30" (1/1) ... [2023-12-23 00:51:30,749 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:51:30" (1/1) ... [2023-12-23 00:51:30,762 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]. [2023-12-23 00:51:30,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:51:30" (1/1) ... [2023-12-23 00:51:30,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:51:30" (1/1) ... [2023-12-23 00:51:30,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:51:30" (1/1) ... [2023-12-23 00:51:30,778 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:51:30" (1/1) ... [2023-12-23 00:51:30,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:51:30" (1/1) ... [2023-12-23 00:51:30,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:51:30" (1/1) ... [2023-12-23 00:51:30,789 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 00:51:30,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 00:51:30,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 00:51:30,790 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 00:51:30,790 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:51:30" (1/1) ... [2023-12-23 00:51:30,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 00:51:30,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 00:51:30,826 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) [2023-12-23 00:51:30,829 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 [2023-12-23 00:51:30,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 00:51:30,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 00:51:30,848 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 00:51:30,848 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 00:51:30,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 00:51:30,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 00:51:30,938 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 00:51:30,940 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 00:51:46,477 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 00:51:46,539 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 00:51:46,540 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 00:51:46,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:51:46 BoogieIcfgContainer [2023-12-23 00:51:46,540 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 00:51:46,542 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 00:51:46,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 00:51:46,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 00:51:46,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 12:51:30" (1/3) ... [2023-12-23 00:51:46,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65adca04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:51:46, skipping insertion in model container [2023-12-23 00:51:46,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:51:30" (2/3) ... [2023-12-23 00:51:46,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65adca04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:51:46, skipping insertion in model container [2023-12-23 00:51:46,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:51:46" (3/3) ... [2023-12-23 00:51:46,549 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-95.i [2023-12-23 00:51:46,561 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 00:51:46,561 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 00:51:46,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 00:51:46,637 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;@6e2a153b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 00:51:46,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 00:51:46,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 69 states have (on average 1.5072463768115942) internal successors, (104), 70 states have internal predecessors, (104), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-23 00:51:46,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-23 00:51:46,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:51:46,657 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 00:51:46,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:51:46,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:51:46,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1077770230, now seen corresponding path program 1 times [2023-12-23 00:51:46,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:51:46,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134727998] [2023-12-23 00:51:46,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:51:46,675 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 [2023-12-23 00:51:46,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:51:46,676 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) [2023-12-23 00:51:46,678 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 [2023-12-23 00:51:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:51:47,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 00:51:47,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:51:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 650 proven. 0 refuted. 0 times theorem prover too weak. 4250 trivial. 0 not checked. [2023-12-23 00:51:47,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 00:51:47,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 00:51:47,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134727998] [2023-12-23 00:51:47,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134727998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 00:51:47,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 00:51:47,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 00:51:47,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10159456] [2023-12-23 00:51:47,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 00:51:47,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 00:51:47,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 00:51:47,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 00:51:47,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 00:51:47,830 INFO L87 Difference]: Start difference. First operand has 122 states, 69 states have (on average 1.5072463768115942) internal successors, (104), 70 states have internal predecessors, (104), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-23 00:51:52,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:51:52,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 00:51:52,602 INFO L93 Difference]: Finished difference Result 240 states and 454 transitions. [2023-12-23 00:51:52,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 00:51:52,862 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 302 [2023-12-23 00:51:52,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 00:51:52,870 INFO L225 Difference]: With dead ends: 240 [2023-12-23 00:51:52,870 INFO L226 Difference]: Without dead ends: 119 [2023-12-23 00:51:52,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 00:51:52,876 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-23 00:51:52,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2023-12-23 00:51:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-23 00:51:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-12-23 00:51:52,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 67 states have internal predecessors, (96), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-23 00:51:52,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 196 transitions. [2023-12-23 00:51:52,928 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 196 transitions. Word has length 302 [2023-12-23 00:51:52,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 00:51:52,929 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 196 transitions. [2023-12-23 00:51:52,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-23 00:51:52,929 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 196 transitions. [2023-12-23 00:51:52,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-23 00:51:52,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:51:52,936 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 00:51:52,963 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 [2023-12-23 00:51:53,137 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 [2023-12-23 00:51:53,138 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:51:53,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:51:53,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1310668222, now seen corresponding path program 1 times [2023-12-23 00:51:53,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:51:53,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587468812] [2023-12-23 00:51:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:51:53,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 00:51:53,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:51:53,142 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) [2023-12-23 00:51:53,145 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 [2023-12-23 00:51:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:51:54,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 00:51:54,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:51:54,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-23 00:51:54,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 00:51:54,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 00:51:54,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587468812] [2023-12-23 00:51:54,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587468812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 00:51:54,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 00:51:54,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 00:51:54,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820095248] [2023-12-23 00:51:54,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 00:51:54,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 00:51:54,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 00:51:54,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 00:51:54,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 00:51:54,381 INFO L87 Difference]: Start difference. First operand 119 states and 196 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-23 00:51:59,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:52:03,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:52:07,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:52:07,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 00:52:07,510 INFO L93 Difference]: Finished difference Result 300 states and 494 transitions. [2023-12-23 00:52:07,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 00:52:07,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 302 [2023-12-23 00:52:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 00:52:07,515 INFO L225 Difference]: With dead ends: 300 [2023-12-23 00:52:07,515 INFO L226 Difference]: Without dead ends: 182 [2023-12-23 00:52:07,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 00:52:07,517 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 99 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-12-23 00:52:07,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 376 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 3 Unknown, 0 Unchecked, 13.1s Time] [2023-12-23 00:52:07,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-23 00:52:07,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2023-12-23 00:52:07,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 111 states have (on average 1.4954954954954955) internal successors, (166), 112 states have internal predecessors, (166), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-23 00:52:07,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 296 transitions. [2023-12-23 00:52:07,550 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 296 transitions. Word has length 302 [2023-12-23 00:52:07,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 00:52:07,552 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 296 transitions. [2023-12-23 00:52:07,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-23 00:52:07,552 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 296 transitions. [2023-12-23 00:52:07,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-23 00:52:07,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:52:07,558 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 00:52:07,588 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 (3)] Forceful destruction successful, exit code 0 [2023-12-23 00:52:07,786 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 [2023-12-23 00:52:07,786 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:52:07,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:52:07,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2128316672, now seen corresponding path program 1 times [2023-12-23 00:52:07,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:52:07,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146472798] [2023-12-23 00:52:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:52:07,788 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 [2023-12-23 00:52:07,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:52:07,792 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) [2023-12-23 00:52:07,793 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 (4)] Waiting until timeout for monitored process [2023-12-23 00:52:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:52:08,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 00:52:08,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:52:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2457 proven. 63 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-12-23 00:52:11,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 00:52:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 84 proven. 63 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-12-23 00:52:12,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 00:52:12,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146472798] [2023-12-23 00:52:12,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146472798] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 00:52:12,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 00:52:12,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 00:52:12,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727589777] [2023-12-23 00:52:12,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 00:52:12,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 00:52:12,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 00:52:12,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 00:52:12,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 00:52:12,505 INFO L87 Difference]: Start difference. First operand 179 states and 296 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2023-12-23 00:52:19,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:52:23,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:52:27,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:52:27,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 00:52:27,842 INFO L93 Difference]: Finished difference Result 367 states and 600 transitions. [2023-12-23 00:52:28,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 00:52:28,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 302 [2023-12-23 00:52:28,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 00:52:28,119 INFO L225 Difference]: With dead ends: 367 [2023-12-23 00:52:28,119 INFO L226 Difference]: Without dead ends: 189 [2023-12-23 00:52:28,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 596 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 00:52:28,122 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 102 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2023-12-23 00:52:28,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 294 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 272 Invalid, 3 Unknown, 0 Unchecked, 15.0s Time] [2023-12-23 00:52:28,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-23 00:52:28,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2023-12-23 00:52:28,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 114 states have (on average 1.4473684210526316) internal successors, (165), 115 states have internal predecessors, (165), 65 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-23 00:52:28,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 295 transitions. [2023-12-23 00:52:28,148 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 295 transitions. Word has length 302 [2023-12-23 00:52:28,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 00:52:28,149 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 295 transitions. [2023-12-23 00:52:28,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2023-12-23 00:52:28,150 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 295 transitions. [2023-12-23 00:52:28,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-23 00:52:28,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:52:28,153 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 00:52:28,183 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 [2023-12-23 00:52:28,368 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 [2023-12-23 00:52:28,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:52:28,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:52:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash 401248330, now seen corresponding path program 1 times [2023-12-23 00:52:28,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:52:28,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720105220] [2023-12-23 00:52:28,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:52:28,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 00:52:28,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:52:28,371 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) [2023-12-23 00:52:28,374 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 [2023-12-23 00:52:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:52:30,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 00:52:30,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:52:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2399 proven. 174 refuted. 0 times theorem prover too weak. 2327 trivial. 0 not checked. [2023-12-23 00:52:36,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 00:52:37,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 00:52:37,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720105220] [2023-12-23 00:52:37,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720105220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 00:52:37,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1373415794] [2023-12-23 00:52:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:52:37,887 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 00:52:37,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 00:52:37,926 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 00:52:37,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-23 00:52:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:52:39,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 00:52:39,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:52:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2367 proven. 90 refuted. 0 times theorem prover too weak. 2443 trivial. 0 not checked. [2023-12-23 00:52:42,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 00:52:43,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1373415794] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 00:52:43,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 00:52:43,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 9 [2023-12-23 00:52:43,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394111093] [2023-12-23 00:52:43,221 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 00:52:43,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 00:52:43,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 00:52:43,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 00:52:43,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-23 00:52:43,223 INFO L87 Difference]: Start difference. First operand 183 states and 295 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 3 states have call successors, (79), 3 states have call predecessors, (79), 5 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) [2023-12-23 00:52:52,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:52:56,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:53:00,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:53:04,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:53:08,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:53:12,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:53:16,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:53:20,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:53:24,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:53:28,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:53:32,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:53:33,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 00:53:33,542 INFO L93 Difference]: Finished difference Result 505 states and 801 transitions. [2023-12-23 00:53:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-23 00:53:33,543 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 3 states have call successors, (79), 3 states have call predecessors, (79), 5 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) Word has length 303 [2023-12-23 00:53:33,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 00:53:33,546 INFO L225 Difference]: With dead ends: 505 [2023-12-23 00:53:33,546 INFO L226 Difference]: Without dead ends: 323 [2023-12-23 00:53:33,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 649 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2023-12-23 00:53:33,548 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 201 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 66 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.4s IncrementalHoareTripleChecker+Time [2023-12-23 00:53:33,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 477 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 462 Invalid, 11 Unknown, 0 Unchecked, 49.4s Time] [2023-12-23 00:53:33,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-12-23 00:53:33,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 310. [2023-12-23 00:53:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 205 states have (on average 1.4585365853658536) internal successors, (299), 208 states have internal predecessors, (299), 97 states have call successors, (97), 7 states have call predecessors, (97), 7 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-23 00:53:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 493 transitions. [2023-12-23 00:53:33,579 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 493 transitions. Word has length 303 [2023-12-23 00:53:33,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 00:53:33,580 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 493 transitions. [2023-12-23 00:53:33,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 3 states have call successors, (79), 3 states have call predecessors, (79), 5 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) [2023-12-23 00:53:33,581 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 493 transitions. [2023-12-23 00:53:33,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-12-23 00:53:33,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:53:33,583 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 00:53:33,611 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 [2023-12-23 00:53:33,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-23 00:53:34,009 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=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 00:53:34,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:53:34,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:53:34,010 INFO L85 PathProgramCache]: Analyzing trace with hash 834411737, now seen corresponding path program 1 times [2023-12-23 00:53:34,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:53:34,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054915328] [2023-12-23 00:53:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:53:34,011 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 [2023-12-23 00:53:34,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:53:34,012 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) [2023-12-23 00:53:34,012 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 [2023-12-23 00:53:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:53:34,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 00:53:34,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:53:40,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2473 proven. 162 refuted. 0 times theorem prover too weak. 2265 trivial. 0 not checked. [2023-12-23 00:53:40,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 00:53:40,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 00:53:40,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054915328] [2023-12-23 00:53:40,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054915328] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 00:53:40,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1243134991] [2023-12-23 00:53:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:53:40,863 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 00:53:40,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 00:53:40,864 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 00:53:40,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-23 00:53:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:53:42,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 00:53:42,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:53:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2443 proven. 84 refuted. 0 times theorem prover too weak. 2373 trivial. 0 not checked. [2023-12-23 00:53:45,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 00:53:45,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1243134991] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 00:53:45,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 00:53:45,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2023-12-23 00:53:45,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279351166] [2023-12-23 00:53:45,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 00:53:45,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 00:53:45,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 00:53:45,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 00:53:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-23 00:53:45,397 INFO L87 Difference]: Start difference. First operand 310 states and 493 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (77), 3 states have call predecessors, (77), 5 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-23 00:53:54,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:53:58,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:54:02,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:54:06,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:54:10,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:54:10,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 00:54:10,941 INFO L93 Difference]: Finished difference Result 637 states and 1001 transitions. [2023-12-23 00:54:11,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-23 00:54:11,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (77), 3 states have call predecessors, (77), 5 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) Word has length 304 [2023-12-23 00:54:11,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 00:54:11,210 INFO L225 Difference]: With dead ends: 637 [2023-12-23 00:54:11,210 INFO L226 Difference]: Without dead ends: 328 [2023-12-23 00:54:11,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-12-23 00:54:11,212 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 89 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 17 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2023-12-23 00:54:11,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 443 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 494 Invalid, 5 Unknown, 0 Unchecked, 25.1s Time] [2023-12-23 00:54:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-12-23 00:54:11,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 318. [2023-12-23 00:54:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 211 states have (on average 1.4075829383886256) internal successors, (297), 214 states have internal predecessors, (297), 97 states have call successors, (97), 9 states have call predecessors, (97), 9 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-23 00:54:11,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 491 transitions. [2023-12-23 00:54:11,238 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 491 transitions. Word has length 304 [2023-12-23 00:54:11,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 00:54:11,239 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 491 transitions. [2023-12-23 00:54:11,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (77), 3 states have call predecessors, (77), 5 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-23 00:54:11,240 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 491 transitions. [2023-12-23 00:54:11,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-12-23 00:54:11,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:54:11,242 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 00:54:11,262 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 (7)] Ended with exit code 0 [2023-12-23 00:54:11,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-23 00:54:11,653 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=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 00:54:11,654 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:54:11,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:54:11,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1845528987, now seen corresponding path program 1 times [2023-12-23 00:54:11,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:54:11,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967357050] [2023-12-23 00:54:11,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:54:11,655 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 [2023-12-23 00:54:11,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:54:11,657 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) [2023-12-23 00:54:11,657 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 [2023-12-23 00:54:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:54:12,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-23 00:54:12,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:56:01,041 WARN L293 SmtUtils]: Spent 9.57s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 00:57:08,115 WARN L293 SmtUtils]: Spent 12.60s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)