/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-50_file-42.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 06:10:45,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 06:10:45,203 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 06:10:45,207 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 06:10:45,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 06:10:45,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 06:10:45,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 06:10:45,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 06:10:45,231 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 06:10:45,234 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 06:10:45,234 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 06:10:45,235 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 06:10:45,235 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 06:10:45,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 06:10:45,236 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 06:10:45,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 06:10:45,237 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 06:10:45,237 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 06:10:45,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 06:10:45,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 06:10:45,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 06:10:45,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 06:10:45,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 06:10:45,238 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 06:10:45,238 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 06:10:45,238 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 06:10:45,238 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 06:10:45,238 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 06:10:45,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 06:10:45,239 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 06:10:45,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 06:10:45,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 06:10:45,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 06:10:45,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 06:10:45,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 06:10:45,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 06:10:45,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 06:10:45,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 06:10:45,240 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 06:10:45,240 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 06:10:45,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 06:10:45,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 06:10:45,241 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 06:10:45,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 06:10:45,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 06:10:45,241 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 06:10:45,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 06:10:45,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 06:10:45,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 06:10:45,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 06:10:45,442 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 06:10:45,443 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 06:10:45,444 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-42.i [2023-12-23 06:10:46,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 06:10:46,717 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 06:10:46,718 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-42.i [2023-12-23 06:10:46,745 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/612ef6dc2/38b13f5509794452a24ef4b83b4dfb33/FLAG12ffae23c [2023-12-23 06:10:46,755 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/612ef6dc2/38b13f5509794452a24ef4b83b4dfb33 [2023-12-23 06:10:46,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 06:10:46,758 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 06:10:46,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 06:10:46,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 06:10:46,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 06:10:46,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:10:46" (1/1) ... [2023-12-23 06:10:46,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d970268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:10:46, skipping insertion in model container [2023-12-23 06:10:46,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:10:46" (1/1) ... [2023-12-23 06:10:46,803 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 06:10:46,896 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-50_file-42.i[915,928] [2023-12-23 06:10:46,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 06:10:46,979 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 06:10:46,987 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-50_file-42.i[915,928] [2023-12-23 06:10:47,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 06:10:47,039 INFO L206 MainTranslator]: Completed translation [2023-12-23 06:10:47,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:10:47 WrapperNode [2023-12-23 06:10:47,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 06:10:47,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 06:10:47,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 06:10:47,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 06:10:47,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:10:47" (1/1) ... [2023-12-23 06:10:47,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:10:47" (1/1) ... [2023-12-23 06:10:47,091 INFO L138 Inliner]: procedures = 27, calls = 50, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 229 [2023-12-23 06:10:47,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 06:10:47,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 06:10:47,092 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 06:10:47,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 06:10:47,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:10:47" (1/1) ... [2023-12-23 06:10:47,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:10:47" (1/1) ... [2023-12-23 06:10:47,111 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:10:47" (1/1) ... [2023-12-23 06:10:47,123 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 06:10:47,123 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:10:47" (1/1) ... [2023-12-23 06:10:47,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:10:47" (1/1) ... [2023-12-23 06:10:47,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:10:47" (1/1) ... [2023-12-23 06:10:47,135 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:10:47" (1/1) ... [2023-12-23 06:10:47,137 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:10:47" (1/1) ... [2023-12-23 06:10:47,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:10:47" (1/1) ... [2023-12-23 06:10:47,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 06:10:47,142 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 06:10:47,142 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 06:10:47,142 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 06:10:47,142 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:10:47" (1/1) ... [2023-12-23 06:10:47,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 06:10:47,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 06:10:47,192 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 06:10:47,211 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 06:10:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 06:10:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 06:10:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 06:10:47,219 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 06:10:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 06:10:47,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 06:10:47,323 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 06:10:47,325 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 06:10:47,829 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 06:10:47,860 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 06:10:47,860 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 06:10:47,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:10:47 BoogieIcfgContainer [2023-12-23 06:10:47,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 06:10:47,893 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 06:10:47,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 06:10:47,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 06:10:47,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:10:46" (1/3) ... [2023-12-23 06:10:47,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754bb8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:10:47, skipping insertion in model container [2023-12-23 06:10:47,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:10:47" (2/3) ... [2023-12-23 06:10:47,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754bb8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:10:47, skipping insertion in model container [2023-12-23 06:10:47,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:10:47" (3/3) ... [2023-12-23 06:10:47,898 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-42.i [2023-12-23 06:10:47,912 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 06:10:47,912 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 06:10:47,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 06:10:47,961 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;@53483f10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 06:10:47,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 06:10:47,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 56 states have (on average 1.4642857142857142) internal successors, (82), 57 states have internal predecessors, (82), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-23 06:10:47,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-23 06:10:47,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:10:47,985 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:47,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:10:47,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:10:47,992 INFO L85 PathProgramCache]: Analyzing trace with hash -323489715, now seen corresponding path program 1 times [2023-12-23 06:10:48,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:10:48,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752115539] [2023-12-23 06:10:48,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:10:48,005 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 06:10:48,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:10:48,022 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 06:10:48,060 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 06:10:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:10:48,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 06:10:48,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:10:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 1172 proven. 0 refuted. 0 times theorem prover too weak. 1492 trivial. 0 not checked. [2023-12-23 06:10:48,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 06:10:48,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 06:10:48,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752115539] [2023-12-23 06:10:48,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752115539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 06:10:48,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 06:10:48,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 06:10:48,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202515884] [2023-12-23 06:10:48,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 06:10:48,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 06:10:48,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 06:10:48,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 06:10:48,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 06:10:48,515 INFO L87 Difference]: Start difference. First operand has 96 states, 56 states have (on average 1.4642857142857142) internal successors, (82), 57 states have internal predecessors, (82), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-12-23 06:10:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 06:10:48,632 INFO L93 Difference]: Finished difference Result 188 states and 345 transitions. [2023-12-23 06:10:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 06:10:48,642 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 231 [2023-12-23 06:10:48,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 06:10:48,647 INFO L225 Difference]: With dead ends: 188 [2023-12-23 06:10:48,647 INFO L226 Difference]: Without dead ends: 93 [2023-12-23 06:10:48,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 230 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 06:10:48,653 INFO L413 NwaCegarLoop]: 145 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, 145 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 [2023-12-23 06:10:48,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 06:10:48,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-23 06:10:48,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-12-23 06:10:48,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 54 states have internal predecessors, (74), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-23 06:10:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 148 transitions. [2023-12-23 06:10:48,687 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 148 transitions. Word has length 231 [2023-12-23 06:10:48,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 06:10:48,688 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 148 transitions. [2023-12-23 06:10:48,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-12-23 06:10:48,688 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 148 transitions. [2023-12-23 06:10:48,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-23 06:10:48,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:10:48,692 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:48,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 06:10:48,901 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 06:10:48,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:10:48,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:10:48,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1207656715, now seen corresponding path program 1 times [2023-12-23 06:10:48,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:10:48,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493135672] [2023-12-23 06:10:48,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:10:48,903 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 06:10:48,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:10:48,904 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 06:10:48,906 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 06:10:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:10:49,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 06:10:49,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:10:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-12-23 06:10:49,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 06:10:49,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 06:10:49,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493135672] [2023-12-23 06:10:49,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493135672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 06:10:49,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 06:10:49,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 06:10:49,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197438747] [2023-12-23 06:10:49,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 06:10:49,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 06:10:49,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 06:10:49,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 06:10:49,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 06:10:49,572 INFO L87 Difference]: Start difference. First operand 93 states and 148 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2023-12-23 06:10:49,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 06:10:49,932 INFO L93 Difference]: Finished difference Result 278 states and 443 transitions. [2023-12-23 06:10:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 06:10:49,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 231 [2023-12-23 06:10:49,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 06:10:49,942 INFO L225 Difference]: With dead ends: 278 [2023-12-23 06:10:49,942 INFO L226 Difference]: Without dead ends: 186 [2023-12-23 06:10:49,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 06:10:49,944 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 102 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 06:10:49,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 429 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 06:10:49,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-23 06:10:49,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 166. [2023-12-23 06:10:49,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 89 states have (on average 1.3146067415730338) internal successors, (117), 89 states have internal predecessors, (117), 74 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-23 06:10:49,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 265 transitions. [2023-12-23 06:10:49,975 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 265 transitions. Word has length 231 [2023-12-23 06:10:49,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 06:10:49,975 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 265 transitions. [2023-12-23 06:10:49,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2023-12-23 06:10:49,976 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 265 transitions. [2023-12-23 06:10:49,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-23 06:10:49,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:10:49,978 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:50,001 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 06:10:50,188 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 06:10:50,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:10:50,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:10:50,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1885738621, now seen corresponding path program 1 times [2023-12-23 06:10:50,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:10:50,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657989409] [2023-12-23 06:10:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:10:50,190 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 06:10:50,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:10:50,191 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 06:10:50,196 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 06:10:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:10:50,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 06:10:50,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:10:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-12-23 06:10:51,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 06:10:51,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 06:10:51,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657989409] [2023-12-23 06:10:51,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657989409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 06:10:51,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 06:10:51,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 06:10:51,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725894061] [2023-12-23 06:10:51,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 06:10:51,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 06:10:51,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 06:10:51,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 06:10:51,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-23 06:10:51,180 INFO L87 Difference]: Start difference. First operand 166 states and 265 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2023-12-23 06:10:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 06:10:52,565 INFO L93 Difference]: Finished difference Result 367 states and 583 transitions. [2023-12-23 06:10:52,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 06:10:52,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 232 [2023-12-23 06:10:52,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 06:10:52,576 INFO L225 Difference]: With dead ends: 367 [2023-12-23 06:10:52,576 INFO L226 Difference]: Without dead ends: 275 [2023-12-23 06:10:52,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-23 06:10:52,577 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 132 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-23 06:10:52,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 504 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-23 06:10:52,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-23 06:10:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 256. [2023-12-23 06:10:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 141 states have (on average 1.3333333333333333) internal successors, (188), 141 states have internal predecessors, (188), 111 states have call successors, (111), 3 states have call predecessors, (111), 3 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2023-12-23 06:10:52,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 410 transitions. [2023-12-23 06:10:52,633 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 410 transitions. Word has length 232 [2023-12-23 06:10:52,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 06:10:52,634 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 410 transitions. [2023-12-23 06:10:52,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2023-12-23 06:10:52,634 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 410 transitions. [2023-12-23 06:10:52,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-23 06:10:52,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:10:52,636 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:52,646 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 06:10:52,845 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 06:10:52,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:10:52,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:10:52,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1398111425, now seen corresponding path program 1 times [2023-12-23 06:10:52,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:10:52,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704296127] [2023-12-23 06:10:52,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:10:52,848 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 06:10:52,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:10:52,849 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 06:10:52,851 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 06:10:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:10:53,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 06:10:53,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:10:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 1199 proven. 159 refuted. 0 times theorem prover too weak. 1306 trivial. 0 not checked. [2023-12-23 06:10:53,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 06:10:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 51 proven. 162 refuted. 0 times theorem prover too weak. 2451 trivial. 0 not checked. [2023-12-23 06:10:53,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 06:10:53,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704296127] [2023-12-23 06:10:53,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704296127] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 06:10:53,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 06:10:53,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-23 06:10:53,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732477842] [2023-12-23 06:10:53,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 06:10:53,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-23 06:10:53,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 06:10:53,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-23 06:10:53,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-23 06:10:53,895 INFO L87 Difference]: Start difference. First operand 256 states and 410 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 3 states have call successors, (66), 3 states have call predecessors, (66), 7 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2023-12-23 06:10:54,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 06:10:54,770 INFO L93 Difference]: Finished difference Result 505 states and 766 transitions. [2023-12-23 06:10:54,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-23 06:10:54,770 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 3 states have call successors, (66), 3 states have call predecessors, (66), 7 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) Word has length 232 [2023-12-23 06:10:54,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 06:10:54,773 INFO L225 Difference]: With dead ends: 505 [2023-12-23 06:10:54,773 INFO L226 Difference]: Without dead ends: 413 [2023-12-23 06:10:54,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 452 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2023-12-23 06:10:54,774 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 302 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-23 06:10:54,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 627 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-23 06:10:54,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-12-23 06:10:54,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 387. [2023-12-23 06:10:54,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 226 states have (on average 1.3097345132743363) internal successors, (296), 226 states have internal predecessors, (296), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 148 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-23 06:10:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 592 transitions. [2023-12-23 06:10:54,836 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 592 transitions. Word has length 232 [2023-12-23 06:10:54,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 06:10:54,837 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 592 transitions. [2023-12-23 06:10:54,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 3 states have call successors, (66), 3 states have call predecessors, (66), 7 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2023-12-23 06:10:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 592 transitions. [2023-12-23 06:10:54,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-23 06:10:54,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:10:54,839 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:54,851 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 06:10:55,048 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 06:10:55,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:10:55,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:10:55,049 INFO L85 PathProgramCache]: Analyzing trace with hash 811305411, now seen corresponding path program 1 times [2023-12-23 06:10:55,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:10:55,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737683609] [2023-12-23 06:10:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:10:55,050 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 06:10:55,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:10:55,051 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 06:10:55,068 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 06:10:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:10:55,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 06:10:55,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:10:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 312 proven. 102 refuted. 0 times theorem prover too weak. 2250 trivial. 0 not checked. [2023-12-23 06:10:56,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 06:10:57,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 06:10:57,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737683609] [2023-12-23 06:10:57,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737683609] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 06:10:57,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [166599760] [2023-12-23 06:10:57,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:10:57,182 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 06:10:57,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 06:10:57,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 06:10:57,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-23 06:10:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:10:57,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 06:10:57,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:10:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-12-23 06:10:58,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 06:10:58,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [166599760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 06:10:58,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 06:10:58,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-12-23 06:10:58,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360178256] [2023-12-23 06:10:58,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 06:10:58,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-23 06:10:58,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 06:10:58,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-23 06:10:58,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-23 06:10:58,802 INFO L87 Difference]: Start difference. First operand 387 states and 592 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2023-12-23 06:11:02,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 06:11:02,887 INFO L93 Difference]: Finished difference Result 990 states and 1497 transitions. [2023-12-23 06:11:02,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 06:11:02,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 232 [2023-12-23 06:11:02,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 06:11:02,901 INFO L225 Difference]: With dead ends: 990 [2023-12-23 06:11:02,901 INFO L226 Difference]: Without dead ends: 793 [2023-12-23 06:11:02,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-23 06:11:02,903 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 166 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-23 06:11:02,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 617 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-23 06:11:02,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-12-23 06:11:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 725. [2023-12-23 06:11:02,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 438 states have (on average 1.3196347031963471) internal successors, (578), 440 states have internal predecessors, (578), 263 states have call successors, (263), 23 states have call predecessors, (263), 23 states have return successors, (263), 261 states have call predecessors, (263), 263 states have call successors, (263) [2023-12-23 06:11:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1104 transitions. [2023-12-23 06:11:02,955 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1104 transitions. Word has length 232 [2023-12-23 06:11:02,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 06:11:02,956 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1104 transitions. [2023-12-23 06:11:02,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2023-12-23 06:11:02,956 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1104 transitions. [2023-12-23 06:11:02,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-23 06:11:02,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:11:02,957 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:02,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-23 06:11:03,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-23 06:11:03,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 06:11:03,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:11:03,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:11:03,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1069470849, now seen corresponding path program 1 times [2023-12-23 06:11:03,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:11:03,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497088206] [2023-12-23 06:11:03,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:11:03,382 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 06:11:03,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:11:03,383 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 06:11:03,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-23 06:11:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:11:03,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 06:11:03,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:11:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 312 proven. 102 refuted. 0 times theorem prover too weak. 2250 trivial. 0 not checked. [2023-12-23 06:11:04,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 06:11:05,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 06:11:05,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497088206] [2023-12-23 06:11:05,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497088206] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 06:11:05,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1979303825] [2023-12-23 06:11:05,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:11:05,718 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 06:11:05,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 06:11:05,719 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 06:11:05,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-23 06:11:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:11:06,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 06:11:06,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:11:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-12-23 06:11:07,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 06:11:07,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1979303825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 06:11:07,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 06:11:07,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-12-23 06:11:07,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360831088] [2023-12-23 06:11:07,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 06:11:07,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 06:11:07,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 06:11:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 06:11:07,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-23 06:11:07,886 INFO L87 Difference]: Start difference. First operand 725 states and 1104 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2023-12-23 06:11:12,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 06:11:12,820 INFO L93 Difference]: Finished difference Result 1258 states and 1915 transitions. [2023-12-23 06:11:12,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 06:11:12,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 232 [2023-12-23 06:11:12,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 06:11:12,827 INFO L225 Difference]: With dead ends: 1258 [2023-12-23 06:11:12,827 INFO L226 Difference]: Without dead ends: 959 [2023-12-23 06:11:12,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-23 06:11:12,831 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 118 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-23 06:11:12,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 521 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-23 06:11:12,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-12-23 06:11:12,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 920. [2023-12-23 06:11:12,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 553 states have (on average 1.3146473779385173) internal successors, (727), 555 states have internal predecessors, (727), 337 states have call successors, (337), 29 states have call predecessors, (337), 29 states have return successors, (337), 335 states have call predecessors, (337), 337 states have call successors, (337) [2023-12-23 06:11:12,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1401 transitions. [2023-12-23 06:11:12,923 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1401 transitions. Word has length 232 [2023-12-23 06:11:12,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 06:11:12,923 INFO L495 AbstractCegarLoop]: Abstraction has 920 states and 1401 transitions. [2023-12-23 06:11:12,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2023-12-23 06:11:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1401 transitions. [2023-12-23 06:11:12,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-23 06:11:12,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:11:12,927 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:12,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-23 06:11:13,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-23 06:11:13,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 06:11:13,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:11:13,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:11:13,336 INFO L85 PathProgramCache]: Analyzing trace with hash 570285972, now seen corresponding path program 1 times [2023-12-23 06:11:13,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:11:13,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094372126] [2023-12-23 06:11:13,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:11:13,336 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 06:11:13,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:11:13,339 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 06:11:13,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-23 06:11:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:11:13,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-23 06:11:13,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-23 06:18:52,082 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 (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 06:18:52,083 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 [2023-12-23 06:18:53,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-23 06:18:53,153 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