/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-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 10:45:55,835 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 10:45:55,900 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 10:45:55,903 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 10:45:55,904 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 10:45:55,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 10:45:55,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 10:45:55,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 10:45:55,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 10:45:55,929 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 10:45:55,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 10:45:55,930 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 10:45:55,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 10:45:55,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 10:45:55,932 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 10:45:55,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 10:45:55,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 10:45:55,932 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 10:45:55,933 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 10:45:55,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 10:45:55,934 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 10:45:55,934 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 10:45:55,934 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 10:45:55,934 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 10:45:55,934 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 10:45:55,935 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 10:45:55,935 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 10:45:55,935 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 10:45:55,935 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 10:45:55,935 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 10:45:55,936 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 10:45:55,936 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 10:45:55,936 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 10:45:55,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 10:45:55,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:45:55,937 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 10:45:55,937 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 10:45:55,937 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 10:45:55,937 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 10:45:55,937 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 10:45:55,937 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 10:45:55,938 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 10:45:55,938 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 10:45:55,938 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 10:45:55,938 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 10:45:55,938 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 10:45:55,938 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 10:45:56,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 10:45:56,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 10:45:56,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 10:45:56,135 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 10:45:56,135 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 10:45:56,136 INFO L431 ainManager$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-34.i [2023-12-16 10:45:57,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 10:45:57,290 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 10:45:57,291 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-34.i [2023-12-16 10:45:57,298 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16634bec7/e6b3921d7eb842d9a4b669f6f14c4382/FLAGcbca16fb3 [2023-12-16 10:45:57,310 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16634bec7/e6b3921d7eb842d9a4b669f6f14c4382 [2023-12-16 10:45:57,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 10:45:57,313 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 10:45:57,313 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 10:45:57,313 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 10:45:57,317 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 10:45:57,317 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:45:57" (1/1) ... [2023-12-16 10:45:57,318 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b622aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:45:57, skipping insertion in model container [2023-12-16 10:45:57,318 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:45:57" (1/1) ... [2023-12-16 10:45:57,344 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 10:45:57,433 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-34.i[916,929] [2023-12-16 10:45:57,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:45:57,500 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 10:45:57,509 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-34.i[916,929] [2023-12-16 10:45:57,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:45:57,564 INFO L206 MainTranslator]: Completed translation [2023-12-16 10:45:57,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:45:57 WrapperNode [2023-12-16 10:45:57,564 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 10:45:57,580 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 10:45:57,580 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 10:45:57,580 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 10:45:57,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:45:57" (1/1) ... [2023-12-16 10:45:57,601 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:45:57" (1/1) ... [2023-12-16 10:45:57,623 INFO L138 Inliner]: procedures = 27, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 266 [2023-12-16 10:45:57,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 10:45:57,624 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 10:45:57,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 10:45:57,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 10:45:57,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:45:57" (1/1) ... [2023-12-16 10:45:57,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:45:57" (1/1) ... [2023-12-16 10:45:57,636 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:45:57" (1/1) ... [2023-12-16 10:45:57,647 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 10:45:57,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:45:57" (1/1) ... [2023-12-16 10:45:57,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:45:57" (1/1) ... [2023-12-16 10:45:57,673 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:45:57" (1/1) ... [2023-12-16 10:45:57,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:45:57" (1/1) ... [2023-12-16 10:45:57,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:45:57" (1/1) ... [2023-12-16 10:45:57,679 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:45:57" (1/1) ... [2023-12-16 10:45:57,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 10:45:57,687 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 10:45:57,687 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 10:45:57,687 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 10:45:57,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:45:57" (1/1) ... [2023-12-16 10:45:57,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:45:57,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 10:45:57,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 10:45:57,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 10:45:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 10:45:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 10:45:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 10:45:57,808 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 10:45:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 10:45:57,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 10:45:57,874 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 10:45:57,875 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 10:46:01,164 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 10:46:01,222 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 10:46:01,222 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 10:46:01,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:46:01 BoogieIcfgContainer [2023-12-16 10:46:01,223 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 10:46:01,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 10:46:01,224 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 10:46:01,226 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 10:46:01,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 10:45:57" (1/3) ... [2023-12-16 10:46:01,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56af2e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:46:01, skipping insertion in model container [2023-12-16 10:46:01,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:45:57" (2/3) ... [2023-12-16 10:46:01,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56af2e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:46:01, skipping insertion in model container [2023-12-16 10:46:01,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:46:01" (3/3) ... [2023-12-16 10:46:01,228 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-34.i [2023-12-16 10:46:01,239 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 10:46:01,239 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 10:46:01,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 10:46:01,271 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;@5ca7ff77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 10:46:01,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 10:46:01,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 66 states have internal predecessors, (97), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-16 10:46:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-16 10:46:01,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:46:01,288 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:46:01,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:46:01,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:46:01,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1319175356, now seen corresponding path program 1 times [2023-12-16 10:46:01,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:46:01,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001993025] [2023-12-16 10:46:01,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:46:01,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:46:01,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:46:01,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:46:01,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 10:46:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:46:01,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 10:46:01,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:46:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 710 proven. 0 refuted. 0 times theorem prover too weak. 3074 trivial. 0 not checked. [2023-12-16 10:46:01,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:46:01,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:46:01,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001993025] [2023-12-16 10:46:01,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001993025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:46:01,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:46:01,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 10:46:01,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698629713] [2023-12-16 10:46:01,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:46:01,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 10:46:01,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:46:01,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 10:46:01,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 10:46:01,952 INFO L87 Difference]: Start difference. First operand has 112 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 66 states have internal predecessors, (97), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-16 10:46:02,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:46:02,041 INFO L93 Difference]: Finished difference Result 221 states and 412 transitions. [2023-12-16 10:46:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 10:46:02,050 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 268 [2023-12-16 10:46:02,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:46:02,056 INFO L225 Difference]: With dead ends: 221 [2023-12-16 10:46:02,057 INFO L226 Difference]: Without dead ends: 110 [2023-12-16 10:46:02,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 10:46:02,069 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 10:46:02,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 10:46:02,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-16 10:46:02,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-12-16 10:46:02,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 64 states have (on average 1.4375) internal successors, (92), 64 states have internal predecessors, (92), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-16 10:46:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 180 transitions. [2023-12-16 10:46:02,120 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 180 transitions. Word has length 268 [2023-12-16 10:46:02,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:46:02,120 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 180 transitions. [2023-12-16 10:46:02,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-16 10:46:02,121 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 180 transitions. [2023-12-16 10:46:02,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-16 10:46:02,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:46:02,128 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:46:02,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 10:46:02,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:46:02,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:46:02,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:46:02,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1600611004, now seen corresponding path program 1 times [2023-12-16 10:46:02,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:46:02,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221135980] [2023-12-16 10:46:02,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:46:02,343 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:46:02,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:46:02,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:46:02,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 10:46:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:46:02,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 10:46:02,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:46:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1473 proven. 96 refuted. 0 times theorem prover too weak. 2215 trivial. 0 not checked. [2023-12-16 10:46:03,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:46:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 33 proven. 96 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2023-12-16 10:46:03,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:46:03,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221135980] [2023-12-16 10:46:03,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221135980] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 10:46:03,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:46:03,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 10:46:03,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013722682] [2023-12-16 10:46:03,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:46:03,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 10:46:03,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:46:03,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 10:46:03,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 10:46:03,933 INFO L87 Difference]: Start difference. First operand 110 states and 180 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2023-12-16 10:46:05,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:46:05,586 INFO L93 Difference]: Finished difference Result 340 states and 548 transitions. [2023-12-16 10:46:05,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 10:46:05,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 268 [2023-12-16 10:46:05,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:46:05,590 INFO L225 Difference]: With dead ends: 340 [2023-12-16 10:46:05,590 INFO L226 Difference]: Without dead ends: 231 [2023-12-16 10:46:05,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 528 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-16 10:46:05,592 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 195 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 10:46:05,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 651 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 10:46:05,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-16 10:46:05,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 225. [2023-12-16 10:46:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 132 states have (on average 1.4166666666666667) internal successors, (187), 132 states have internal predecessors, (187), 88 states have call successors, (88), 4 states have call predecessors, (88), 4 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-16 10:46:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 363 transitions. [2023-12-16 10:46:05,643 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 363 transitions. Word has length 268 [2023-12-16 10:46:05,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:46:05,645 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 363 transitions. [2023-12-16 10:46:05,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2023-12-16 10:46:05,645 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 363 transitions. [2023-12-16 10:46:05,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-16 10:46:05,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:46:05,652 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:46:05,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 10:46:05,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:46:05,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:46:05,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:46:05,866 INFO L85 PathProgramCache]: Analyzing trace with hash -899546426, now seen corresponding path program 1 times [2023-12-16 10:46:05,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:46:05,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258412064] [2023-12-16 10:46:05,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:46:05,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:46:05,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:46:05,872 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:46:05,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 10:46:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:46:06,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 10:46:06,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:46:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-16 10:46:06,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:46:06,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:46:06,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258412064] [2023-12-16 10:46:06,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258412064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:46:06,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:46:06,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 10:46:06,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835596073] [2023-12-16 10:46:06,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:46:06,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 10:46:06,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:46:06,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 10:46:06,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 10:46:06,969 INFO L87 Difference]: Start difference. First operand 225 states and 363 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-16 10:46:07,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:46:07,276 INFO L93 Difference]: Finished difference Result 469 states and 752 transitions. [2023-12-16 10:46:07,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 10:46:07,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 268 [2023-12-16 10:46:07,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:46:07,285 INFO L225 Difference]: With dead ends: 469 [2023-12-16 10:46:07,285 INFO L226 Difference]: Without dead ends: 245 [2023-12-16 10:46:07,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 10:46:07,289 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 138 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 10:46:07,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 543 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 10:46:07,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-16 10:46:07,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 227. [2023-12-16 10:46:07,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 134 states have (on average 1.3955223880597014) internal successors, (187), 134 states have internal predecessors, (187), 88 states have call successors, (88), 4 states have call predecessors, (88), 4 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-16 10:46:07,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 363 transitions. [2023-12-16 10:46:07,341 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 363 transitions. Word has length 268 [2023-12-16 10:46:07,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:46:07,343 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 363 transitions. [2023-12-16 10:46:07,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-16 10:46:07,343 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 363 transitions. [2023-12-16 10:46:07,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-16 10:46:07,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:46:07,345 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:46:07,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 10:46:07,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:46:07,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:46:07,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:46:07,561 INFO L85 PathProgramCache]: Analyzing trace with hash 985309035, now seen corresponding path program 1 times [2023-12-16 10:46:07,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:46:07,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532396990] [2023-12-16 10:46:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:46:07,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:46:07,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:46:07,562 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:46:07,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 10:46:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:46:07,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 10:46:07,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:46:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-16 10:46:09,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:46:09,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:46:09,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532396990] [2023-12-16 10:46:09,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532396990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:46:09,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:46:09,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 10:46:09,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500511214] [2023-12-16 10:46:09,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:46:09,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 10:46:09,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:46:09,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 10:46:09,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 10:46:09,097 INFO L87 Difference]: Start difference. First operand 227 states and 363 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-16 10:46:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:46:09,979 INFO L93 Difference]: Finished difference Result 783 states and 1253 transitions. [2023-12-16 10:46:09,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 10:46:09,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 269 [2023-12-16 10:46:09,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:46:09,996 INFO L225 Difference]: With dead ends: 783 [2023-12-16 10:46:09,996 INFO L226 Difference]: Without dead ends: 557 [2023-12-16 10:46:10,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-16 10:46:10,004 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 179 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 10:46:10,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 805 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 10:46:10,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-12-16 10:46:10,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 447. [2023-12-16 10:46:10,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 262 states have (on average 1.381679389312977) internal successors, (362), 262 states have internal predecessors, (362), 176 states have call successors, (176), 8 states have call predecessors, (176), 8 states have return successors, (176), 176 states have call predecessors, (176), 176 states have call successors, (176) [2023-12-16 10:46:10,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 714 transitions. [2023-12-16 10:46:10,082 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 714 transitions. Word has length 269 [2023-12-16 10:46:10,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:46:10,083 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 714 transitions. [2023-12-16 10:46:10,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-16 10:46:10,083 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 714 transitions. [2023-12-16 10:46:10,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-16 10:46:10,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:46:10,086 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:46:10,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 10:46:10,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:46:10,300 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:46:10,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:46:10,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1763013822, now seen corresponding path program 1 times [2023-12-16 10:46:10,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:46:10,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107485609] [2023-12-16 10:46:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:46:10,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:46:10,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:46:10,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:46:10,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 10:46:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:46:10,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 10:46:10,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:46:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-16 10:46:10,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:46:10,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:46:10,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107485609] [2023-12-16 10:46:10,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107485609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:46:10,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:46:10,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 10:46:10,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45448801] [2023-12-16 10:46:10,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:46:10,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 10:46:10,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:46:10,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 10:46:10,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 10:46:10,777 INFO L87 Difference]: Start difference. First operand 447 states and 714 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-16 10:46:17,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:46:17,693 INFO L93 Difference]: Finished difference Result 1471 states and 2317 transitions. [2023-12-16 10:46:17,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 10:46:17,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2023-12-16 10:46:17,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:46:17,699 INFO L225 Difference]: With dead ends: 1471 [2023-12-16 10:46:17,699 INFO L226 Difference]: Without dead ends: 1025 [2023-12-16 10:46:17,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 10:46:17,701 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 279 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-16 10:46:17,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 440 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-16 10:46:17,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2023-12-16 10:46:17,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 727. [2023-12-16 10:46:17,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 470 states have (on average 1.4340425531914893) internal successors, (674), 474 states have internal predecessors, (674), 240 states have call successors, (240), 16 states have call predecessors, (240), 16 states have return successors, (240), 236 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-16 10:46:17,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1154 transitions. [2023-12-16 10:46:17,787 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1154 transitions. Word has length 270 [2023-12-16 10:46:17,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:46:17,789 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1154 transitions. [2023-12-16 10:46:17,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-16 10:46:17,795 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1154 transitions. [2023-12-16 10:46:17,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-16 10:46:17,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:46:17,799 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:46:17,817 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 [2023-12-16 10:46:18,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:46:18,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:46:18,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:46:18,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1544159104, now seen corresponding path program 1 times [2023-12-16 10:46:18,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:46:18,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184937411] [2023-12-16 10:46:18,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:46:18,018 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:46:18,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:46:18,019 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:46:18,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 10:46:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:46:18,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-16 10:46:18,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 10:46:58,641 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 10:46:58,641 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 10:46:59,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 10:46:59,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown