/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_fillercodestructure_filler-pr-cn_file-79.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 12:24:51,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 12:24:51,879 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 12:24:51,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 12:24:51,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 12:24:51,920 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 12:24:51,920 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 12:24:51,921 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 12:24:51,921 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 12:24:51,921 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 12:24:51,922 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 12:24:51,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 12:24:51,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 12:24:51,923 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 12:24:51,923 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 12:24:51,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 12:24:51,925 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 12:24:51,926 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 12:24:51,926 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 12:24:51,926 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 12:24:51,927 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 12:24:51,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 12:24:51,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 12:24:51,931 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 12:24:51,934 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 12:24:51,934 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 12:24:51,935 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 12:24:51,935 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 12:24:51,935 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 12:24:51,935 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 12:24:51,936 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 12:24:51,936 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 12:24:51,937 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 12:24:51,937 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 12:24:51,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 12:24:51,937 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 12:24:51,937 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 12:24:51,938 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 12:24:51,938 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 12:24:51,938 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 12:24:51,938 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 12:24:51,938 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 12:24:51,939 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 12:24:51,939 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 12:24:51,939 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 12:24:51,939 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 12:24:51,939 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 12:24:52,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 12:24:52,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 12:24:52,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 12:24:52,232 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 12:24:52,232 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 12:24:52,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-79.i [2023-12-23 12:24:53,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 12:24:53,718 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 12:24:53,719 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-79.i [2023-12-23 12:24:53,729 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bc0cef7a/f99a665306ba4e57825fd4b2bc457c2a/FLAG466dd15d5 [2023-12-23 12:24:53,742 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bc0cef7a/f99a665306ba4e57825fd4b2bc457c2a [2023-12-23 12:24:53,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 12:24:53,747 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 12:24:53,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 12:24:53,748 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 12:24:53,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 12:24:53,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:24:53" (1/1) ... [2023-12-23 12:24:53,758 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274cdfb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:24:53, skipping insertion in model container [2023-12-23 12:24:53,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:24:53" (1/1) ... [2023-12-23 12:24:53,807 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 12:24:53,975 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_fillercodestructure_filler-pr-cn_file-79.i[919,932] [2023-12-23 12:24:54,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 12:24:54,066 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 12:24:54,077 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_fillercodestructure_filler-pr-cn_file-79.i[919,932] [2023-12-23 12:24:54,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 12:24:54,175 INFO L206 MainTranslator]: Completed translation [2023-12-23 12:24:54,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:24:54 WrapperNode [2023-12-23 12:24:54,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 12:24:54,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 12:24:54,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 12:24:54,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 12:24:54,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:24:54" (1/1) ... [2023-12-23 12:24:54,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:24:54" (1/1) ... [2023-12-23 12:24:54,294 INFO L138 Inliner]: procedures = 27, calls = 65, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 284 [2023-12-23 12:24:54,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 12:24:54,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 12:24:54,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 12:24:54,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 12:24:54,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:24:54" (1/1) ... [2023-12-23 12:24:54,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:24:54" (1/1) ... [2023-12-23 12:24:54,331 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:24:54" (1/1) ... [2023-12-23 12:24:54,351 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 12:24:54,352 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:24:54" (1/1) ... [2023-12-23 12:24:54,352 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:24:54" (1/1) ... [2023-12-23 12:24:54,389 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:24:54" (1/1) ... [2023-12-23 12:24:54,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:24:54" (1/1) ... [2023-12-23 12:24:54,396 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:24:54" (1/1) ... [2023-12-23 12:24:54,405 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:24:54" (1/1) ... [2023-12-23 12:24:54,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 12:24:54,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 12:24:54,411 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 12:24:54,411 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 12:24:54,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:24:54" (1/1) ... [2023-12-23 12:24:54,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 12:24:54,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 12:24:54,466 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 12:24:54,492 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 12:24:54,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 12:24:54,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 12:24:54,505 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 12:24:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 12:24:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 12:24:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 12:24:54,636 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 12:24:54,641 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 12:25:03,731 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 12:25:03,811 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 12:25:03,812 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 12:25:03,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:25:03 BoogieIcfgContainer [2023-12-23 12:25:03,812 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 12:25:03,814 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 12:25:03,814 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 12:25:03,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 12:25:03,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 12:24:53" (1/3) ... [2023-12-23 12:25:03,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450ca28d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:25:03, skipping insertion in model container [2023-12-23 12:25:03,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:24:54" (2/3) ... [2023-12-23 12:25:03,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450ca28d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:25:03, skipping insertion in model container [2023-12-23 12:25:03,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:25:03" (3/3) ... [2023-12-23 12:25:03,821 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-79.i [2023-12-23 12:25:03,838 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 12:25:03,839 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 12:25:03,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 12:25:03,895 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;@5fd96021, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 12:25:03,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 12:25:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 63 states have (on average 1.3492063492063493) internal successors, (85), 64 states have internal predecessors, (85), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-23 12:25:03,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2023-12-23 12:25:03,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:25:03,932 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:03,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:25:03,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:25:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash 28742192, now seen corresponding path program 1 times [2023-12-23 12:25:03,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:25:03,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402579460] [2023-12-23 12:25:03,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:25:03,961 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 12:25:03,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:25:03,966 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 12:25:03,978 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 12:25:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:25:04,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 12:25:04,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:25:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 1862 proven. 0 refuted. 0 times theorem prover too weak. 3442 trivial. 0 not checked. [2023-12-23 12:25:04,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 12:25:04,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:25:04,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402579460] [2023-12-23 12:25:04,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402579460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 12:25:04,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 12:25:04,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 12:25:04,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206499039] [2023-12-23 12:25:04,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 12:25:04,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 12:25:04,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:25:04,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 12:25:04,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 12:25:04,933 INFO L87 Difference]: Start difference. First operand has 118 states, 63 states have (on average 1.3492063492063493) internal successors, (85), 64 states have internal predecessors, (85), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) 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, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-23 12:25:09,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:25:09,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:25:09,139 INFO L93 Difference]: Finished difference Result 233 states and 428 transitions. [2023-12-23 12:25:09,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 12:25:09,187 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, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 312 [2023-12-23 12:25:09,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:25:09,194 INFO L225 Difference]: With dead ends: 233 [2023-12-23 12:25:09,195 INFO L226 Difference]: Without dead ends: 116 [2023-12-23 12:25:09,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 311 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 12:25:09,202 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-23 12:25:09,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 180 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-12-23 12:25:09,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-23 12:25:09,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-12-23 12:25:09,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-23 12:25:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 183 transitions. [2023-12-23 12:25:09,268 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 183 transitions. Word has length 312 [2023-12-23 12:25:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:25:09,268 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 183 transitions. [2023-12-23 12:25:09,269 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, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-23 12:25:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 183 transitions. [2023-12-23 12:25:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2023-12-23 12:25:09,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:25:09,276 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:09,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-23 12:25:09,496 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 12:25:09,497 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:25:09,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:25:09,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1683969020, now seen corresponding path program 1 times [2023-12-23 12:25:09,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:25:09,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967061878] [2023-12-23 12:25:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:25:09,499 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 12:25:09,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:25:09,501 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 12:25:09,504 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 12:25:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:25:10,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 12:25:10,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:25:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-23 12:25:12,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 12:25:12,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:25:12,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967061878] [2023-12-23 12:25:12,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967061878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 12:25:12,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 12:25:12,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 12:25:12,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042861776] [2023-12-23 12:25:12,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 12:25:12,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 12:25:12,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:25:12,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 12:25:12,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-23 12:25:12,194 INFO L87 Difference]: Start difference. First operand 116 states and 183 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-23 12:25:17,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:25:20,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:25:24,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:25:24,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:25:24,602 INFO L93 Difference]: Finished difference Result 369 states and 582 transitions. [2023-12-23 12:25:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 12:25:24,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 312 [2023-12-23 12:25:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:25:24,658 INFO L225 Difference]: With dead ends: 369 [2023-12-23 12:25:24,658 INFO L226 Difference]: Without dead ends: 254 [2023-12-23 12:25:24,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-23 12:25:24,660 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 199 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 107 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2023-12-23 12:25:24,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 577 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 126 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2023-12-23 12:25:24,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-12-23 12:25:24,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 229. [2023-12-23 12:25:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 122 states have (on average 1.2540983606557377) internal successors, (153), 122 states have internal predecessors, (153), 104 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-23 12:25:24,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 361 transitions. [2023-12-23 12:25:24,723 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 361 transitions. Word has length 312 [2023-12-23 12:25:24,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:25:24,725 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 361 transitions. [2023-12-23 12:25:24,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-23 12:25:24,725 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 361 transitions. [2023-12-23 12:25:24,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-12-23 12:25:24,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:25:24,730 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:24,762 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 12:25:24,948 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 12:25:24,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:25:24,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:25:24,949 INFO L85 PathProgramCache]: Analyzing trace with hash 490016918, now seen corresponding path program 1 times [2023-12-23 12:25:24,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:25:24,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268402116] [2023-12-23 12:25:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:25:24,951 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 12:25:24,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:25:24,953 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 12:25:24,955 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 12:25:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:25:25,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 12:25:25,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:25:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-23 12:25:27,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 12:25:27,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:25:27,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268402116] [2023-12-23 12:25:27,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268402116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 12:25:27,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 12:25:27,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 12:25:27,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918417006] [2023-12-23 12:25:27,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 12:25:27,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 12:25:27,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:25:27,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 12:25:27,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-23 12:25:27,412 INFO L87 Difference]: Start difference. First operand 229 states and 361 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-23 12:25:31,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:25:35,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:25:39,228 WARN L539 Checker$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 12:25:42,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.59s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:25:47,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:25:49,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:25:49,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:25:49,770 INFO L93 Difference]: Finished difference Result 594 states and 935 transitions. [2023-12-23 12:25:49,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 12:25:49,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 314 [2023-12-23 12:25:49,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:25:49,832 INFO L225 Difference]: With dead ends: 594 [2023-12-23 12:25:49,833 INFO L226 Difference]: Without dead ends: 366 [2023-12-23 12:25:49,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-23 12:25:49,835 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 132 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 105 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2023-12-23 12:25:49,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 567 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 123 Invalid, 3 Unknown, 0 Unchecked, 22.2s Time] [2023-12-23 12:25:49,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-12-23 12:25:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 320. [2023-12-23 12:25:49,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 160 states have (on average 1.19375) internal successors, (191), 160 states have internal predecessors, (191), 156 states have call successors, (156), 3 states have call predecessors, (156), 3 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2023-12-23 12:25:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 503 transitions. [2023-12-23 12:25:49,903 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 503 transitions. Word has length 314 [2023-12-23 12:25:49,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:25:49,904 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 503 transitions. [2023-12-23 12:25:49,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-23 12:25:49,905 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 503 transitions. [2023-12-23 12:25:49,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-12-23 12:25:49,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:25:49,909 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:49,940 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 12:25:50,136 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 12:25:50,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:25:50,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:25:50,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1198926824, now seen corresponding path program 1 times [2023-12-23 12:25:50,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:25:50,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85959009] [2023-12-23 12:25:50,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:25:50,139 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 12:25:50,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:25:50,141 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 12:25:50,148 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 12:25:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:25:50,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 12:25:50,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:25:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-23 12:25:50,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 12:25:51,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:25:51,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85959009] [2023-12-23 12:25:51,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85959009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 12:25:51,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 12:25:51,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 12:25:51,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822577345] [2023-12-23 12:25:51,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 12:25:51,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 12:25:51,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:25:51,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 12:25:51,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 12:25:51,003 INFO L87 Difference]: Start difference. First operand 320 states and 503 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-23 12:25:55,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:25:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:25:55,318 INFO L93 Difference]: Finished difference Result 556 states and 869 transitions. [2023-12-23 12:25:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 12:25:55,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 314 [2023-12-23 12:25:55,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:25:55,323 INFO L225 Difference]: With dead ends: 556 [2023-12-23 12:25:55,323 INFO L226 Difference]: Without dead ends: 328 [2023-12-23 12:25:55,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 312 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 12:25:55,325 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 40 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-23 12:25:55,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 325 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2023-12-23 12:25:55,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-12-23 12:25:55,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2023-12-23 12:25:55,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 166 states have (on average 1.1746987951807228) internal successors, (195), 166 states have internal predecessors, (195), 156 states have call successors, (156), 5 states have call predecessors, (156), 5 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2023-12-23 12:25:55,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 507 transitions. [2023-12-23 12:25:55,364 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 507 transitions. Word has length 314 [2023-12-23 12:25:55,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:25:55,368 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 507 transitions. [2023-12-23 12:25:55,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-23 12:25:55,368 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 507 transitions. [2023-12-23 12:25:55,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-12-23 12:25:55,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:25:55,373 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:55,404 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 12:25:55,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 12:25:55,592 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:25:55,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:25:55,593 INFO L85 PathProgramCache]: Analyzing trace with hash 598122396, now seen corresponding path program 1 times [2023-12-23 12:25:55,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:25:55,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302087285] [2023-12-23 12:25:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:25:55,593 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 12:25:55,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:25:55,595 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 12:25:55,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-23 12:25:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:25:56,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 12:25:56,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:25:57,510 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2151 proven. 111 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2023-12-23 12:25:57,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 12:25:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 42 proven. 111 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2023-12-23 12:25:58,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:25:58,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302087285] [2023-12-23 12:25:58,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302087285] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 12:25:58,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 12:25:58,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-23 12:25:58,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013003569] [2023-12-23 12:25:58,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 12:25:58,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 12:25:58,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:25:58,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 12:25:58,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-23 12:25:58,342 INFO L87 Difference]: Start difference. First operand 328 states and 507 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 2 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-23 12:26:04,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:26:06,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:26:06,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:26:06,901 INFO L93 Difference]: Finished difference Result 475 states and 716 transitions. [2023-12-23 12:26:06,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 12:26:06,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 2 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) Word has length 315 [2023-12-23 12:26:06,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:26:06,980 INFO L225 Difference]: With dead ends: 475 [2023-12-23 12:26:06,980 INFO L226 Difference]: Without dead ends: 356 [2023-12-23 12:26:06,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 621 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2023-12-23 12:26:06,985 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 126 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 145 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-23 12:26:06,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 255 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 274 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2023-12-23 12:26:06,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-12-23 12:26:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 340. [2023-12-23 12:26:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 175 states have (on average 1.1542857142857144) internal successors, (202), 175 states have internal predecessors, (202), 156 states have call successors, (156), 8 states have call predecessors, (156), 8 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2023-12-23 12:26:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 514 transitions. [2023-12-23 12:26:07,029 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 514 transitions. Word has length 315 [2023-12-23 12:26:07,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:26:07,030 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 514 transitions. [2023-12-23 12:26:07,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 2 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-23 12:26:07,031 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 514 transitions. [2023-12-23 12:26:07,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-12-23 12:26:07,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:26:07,034 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:07,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-23 12:26:07,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 12:26:07,249 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:26:07,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:26:07,250 INFO L85 PathProgramCache]: Analyzing trace with hash 601527118, now seen corresponding path program 1 times [2023-12-23 12:26:07,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:26:07,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231618602] [2023-12-23 12:26:07,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:26:07,251 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 12:26:07,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:26:07,254 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 12:26:07,288 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 12:26:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:26:08,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-23 12:26:08,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:28:20,922 WARN L293 SmtUtils]: Spent 9.70s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 12:29:55,196 WARN L293 SmtUtils]: Spent 7.35s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 12:30:58,006 WARN L293 SmtUtils]: Spent 7.95s on a formula simplification that was a NOOP. DAG size: 146 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)