/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_loopvsstraightlinecode_100-while_file-14.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 22:26:08,212 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 22:26:08,250 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 22:26:08,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 22:26:08,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 22:26:08,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 22:26:08,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 22:26:08,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 22:26:08,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 22:26:08,268 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 22:26:08,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 22:26:08,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 22:26:08,269 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 22:26:08,269 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 22:26:08,269 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 22:26:08,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 22:26:08,270 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 22:26:08,270 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 22:26:08,270 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 22:26:08,270 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 22:26:08,271 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 22:26:08,271 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 22:26:08,271 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 22:26:08,271 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 22:26:08,271 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 22:26:08,272 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 22:26:08,272 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 22:26:08,272 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 22:26:08,272 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 22:26:08,272 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 22:26:08,273 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 22:26:08,273 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 22:26:08,273 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 22:26:08,273 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 22:26:08,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 22:26:08,273 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 22:26:08,274 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 22:26:08,274 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 22:26:08,274 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 22:26:08,274 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 22:26:08,274 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 22:26:08,274 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 22:26:08,274 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 22:26:08,274 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 22:26:08,275 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 22:26:08,275 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 22:26:08,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 22:26:08,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 22:26:08,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 22:26:08,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 22:26:08,428 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 22:26:08,428 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 22:26:08,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-14.i [2023-12-23 22:26:09,428 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 22:26:09,602 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 22:26:09,602 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-14.i [2023-12-23 22:26:09,613 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7f4ecd18/320775e1ce4f450b8199e5856313a083/FLAGe079d1853 [2023-12-23 22:26:09,622 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7f4ecd18/320775e1ce4f450b8199e5856313a083 [2023-12-23 22:26:09,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 22:26:09,624 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 22:26:09,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 22:26:09,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 22:26:09,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 22:26:09,632 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:26:09" (1/1) ... [2023-12-23 22:26:09,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337433b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:09, skipping insertion in model container [2023-12-23 22:26:09,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:26:09" (1/1) ... [2023-12-23 22:26:09,663 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 22:26:09,774 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_loopvsstraightlinecode_100-while_file-14.i[916,929] [2023-12-23 22:26:09,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 22:26:09,848 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 22:26:09,855 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_loopvsstraightlinecode_100-while_file-14.i[916,929] [2023-12-23 22:26:09,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 22:26:09,902 INFO L206 MainTranslator]: Completed translation [2023-12-23 22:26:09,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:09 WrapperNode [2023-12-23 22:26:09,902 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 22:26:09,903 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 22:26:09,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 22:26:09,904 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 22:26:09,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:09" (1/1) ... [2023-12-23 22:26:09,918 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:09" (1/1) ... [2023-12-23 22:26:09,942 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 205 [2023-12-23 22:26:09,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 22:26:09,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 22:26:09,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 22:26:09,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 22:26:09,951 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:09" (1/1) ... [2023-12-23 22:26:09,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:09" (1/1) ... [2023-12-23 22:26:09,962 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:09" (1/1) ... [2023-12-23 22:26:09,985 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 22:26:09,986 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:09" (1/1) ... [2023-12-23 22:26:09,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:09" (1/1) ... [2023-12-23 22:26:09,994 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:09" (1/1) ... [2023-12-23 22:26:09,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:09" (1/1) ... [2023-12-23 22:26:09,999 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:09" (1/1) ... [2023-12-23 22:26:10,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:09" (1/1) ... [2023-12-23 22:26:10,003 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 22:26:10,004 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 22:26:10,004 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 22:26:10,004 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 22:26:10,005 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:09" (1/1) ... [2023-12-23 22:26:10,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 22:26:10,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 22:26:10,034 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 22:26:10,052 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 22:26:10,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 22:26:10,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 22:26:10,067 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 22:26:10,068 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 22:26:10,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 22:26:10,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 22:26:10,142 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 22:26:10,144 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 22:26:12,081 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 22:26:12,176 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 22:26:12,176 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 22:26:12,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:26:12 BoogieIcfgContainer [2023-12-23 22:26:12,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 22:26:12,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 22:26:12,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 22:26:12,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 22:26:12,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:26:09" (1/3) ... [2023-12-23 22:26:12,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5d7728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:26:12, skipping insertion in model container [2023-12-23 22:26:12,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:09" (2/3) ... [2023-12-23 22:26:12,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5d7728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:26:12, skipping insertion in model container [2023-12-23 22:26:12,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:26:12" (3/3) ... [2023-12-23 22:26:12,182 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-14.i [2023-12-23 22:26:12,196 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 22:26:12,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 22:26:12,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 22:26:12,241 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;@1ad29dc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 22:26:12,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 22:26:12,244 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 49 states have (on average 1.469387755102041) internal successors, (72), 50 states have internal predecessors, (72), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-23 22:26:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-23 22:26:12,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 22:26:12,256 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:12,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 22:26:12,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 22:26:12,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2097201629, now seen corresponding path program 1 times [2023-12-23 22:26:12,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 22:26:12,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990012871] [2023-12-23 22:26:12,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 22:26:12,268 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 22:26:12,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 22:26:12,270 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 22:26:12,276 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 22:26:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 22:26:12,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 22:26:12,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 22:26:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 1476 trivial. 0 not checked. [2023-12-23 22:26:12,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 22:26:12,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 22:26:12,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990012871] [2023-12-23 22:26:12,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990012871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 22:26:12,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 22:26:12,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 22:26:12,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856636391] [2023-12-23 22:26:12,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 22:26:12,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 22:26:12,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 22:26:12,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 22:26:12,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 22:26:12,652 INFO L87 Difference]: Start difference. First operand has 83 states, 49 states have (on average 1.469387755102041) internal successors, (72), 50 states have internal predecessors, (72), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-23 22:26:12,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 22:26:12,957 INFO L93 Difference]: Finished difference Result 162 states and 295 transitions. [2023-12-23 22:26:12,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 22:26:12,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 192 [2023-12-23 22:26:12,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 22:26:12,987 INFO L225 Difference]: With dead ends: 162 [2023-12-23 22:26:12,987 INFO L226 Difference]: Without dead ends: 80 [2023-12-23 22:26:12,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 191 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 22:26:12,991 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 22:26:12,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 22:26:13,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-23 22:26:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-23 22:26:13,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-23 22:26:13,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 126 transitions. [2023-12-23 22:26:13,037 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 126 transitions. Word has length 192 [2023-12-23 22:26:13,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 22:26:13,037 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 126 transitions. [2023-12-23 22:26:13,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-23 22:26:13,038 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 126 transitions. [2023-12-23 22:26:13,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-23 22:26:13,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 22:26:13,049 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:13,059 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 22:26:13,259 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 22:26:13,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 22:26:13,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 22:26:13,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1873201569, now seen corresponding path program 1 times [2023-12-23 22:26:13,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 22:26:13,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892895263] [2023-12-23 22:26:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 22:26:13,261 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 22:26:13,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 22:26:13,263 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 22:26:13,264 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 22:26:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 22:26:13,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 22:26:13,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 22:26:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-23 22:26:14,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 22:26:14,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 22:26:14,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892895263] [2023-12-23 22:26:14,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892895263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 22:26:14,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 22:26:14,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 22:26:14,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114421813] [2023-12-23 22:26:14,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 22:26:14,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 22:26:14,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 22:26:14,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 22:26:14,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 22:26:14,819 INFO L87 Difference]: Start difference. First operand 80 states and 126 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 22:26:16,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 22:26:16,585 INFO L93 Difference]: Finished difference Result 246 states and 385 transitions. [2023-12-23 22:26:16,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 22:26:16,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2023-12-23 22:26:16,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 22:26:16,612 INFO L225 Difference]: With dead ends: 246 [2023-12-23 22:26:16,612 INFO L226 Difference]: Without dead ends: 167 [2023-12-23 22:26:16,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 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 22:26:16,614 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 101 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-23 22:26:16,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 350 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-23 22:26:16,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-23 22:26:16,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2023-12-23 22:26:16,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 92 states have (on average 1.358695652173913) internal successors, (125), 92 states have internal predecessors, (125), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-23 22:26:16,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 249 transitions. [2023-12-23 22:26:16,631 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 249 transitions. Word has length 192 [2023-12-23 22:26:16,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 22:26:16,631 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 249 transitions. [2023-12-23 22:26:16,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 22:26:16,632 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 249 transitions. [2023-12-23 22:26:16,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-23 22:26:16,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 22:26:16,634 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:16,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-23 22:26:16,852 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 22:26:16,853 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 22:26:16,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 22:26:16,853 INFO L85 PathProgramCache]: Analyzing trace with hash -120943137, now seen corresponding path program 1 times [2023-12-23 22:26:16,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 22:26:16,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178170275] [2023-12-23 22:26:16,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 22:26:16,854 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 22:26:16,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 22:26:16,856 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 22:26:16,861 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 22:26:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 22:26:17,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 22:26:17,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 22:26:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-23 22:26:17,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 22:26:17,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 22:26:17,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178170275] [2023-12-23 22:26:17,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178170275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 22:26:17,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 22:26:17,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 22:26:17,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644472731] [2023-12-23 22:26:17,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 22:26:17,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 22:26:17,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 22:26:17,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 22:26:17,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 22:26:17,458 INFO L87 Difference]: Start difference. First operand 157 states and 249 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 22:26:18,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 22:26:18,578 INFO L93 Difference]: Finished difference Result 392 states and 622 transitions. [2023-12-23 22:26:18,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 22:26:18,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2023-12-23 22:26:18,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 22:26:18,580 INFO L225 Difference]: With dead ends: 392 [2023-12-23 22:26:18,580 INFO L226 Difference]: Without dead ends: 236 [2023-12-23 22:26:18,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 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 22:26:18,582 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 56 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-23 22:26:18,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 350 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-23 22:26:18,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-23 22:26:18,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2023-12-23 22:26:18,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 137 states have (on average 1.3503649635036497) internal successors, (185), 137 states have internal predecessors, (185), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-23 22:26:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 371 transitions. [2023-12-23 22:26:18,605 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 371 transitions. Word has length 192 [2023-12-23 22:26:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 22:26:18,606 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 371 transitions. [2023-12-23 22:26:18,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 22:26:18,606 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 371 transitions. [2023-12-23 22:26:18,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-23 22:26:18,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 22:26:18,608 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:18,631 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 22:26:18,818 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 22:26:18,818 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 22:26:18,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 22:26:18,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1617416509, now seen corresponding path program 1 times [2023-12-23 22:26:18,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 22:26:18,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219426592] [2023-12-23 22:26:18,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 22:26:18,819 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 22:26:18,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 22:26:18,820 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 22:26:18,832 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 22:26:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 22:26:19,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-23 22:26:19,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 22:26:50,769 WARN L293 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 22:27:10,120 WARN L293 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 82 DAG size of output: 84 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 22:27:29,726 WARN L293 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 84 DAG size of output: 86 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 22:28:18,637 WARN L293 SmtUtils]: Spent 6.57s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 22:29:04,150 WARN L293 SmtUtils]: Spent 13.58s on a formula simplification that was a NOOP. DAG size: 94 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 22:30:05,762 WARN L293 SmtUtils]: Spent 12.88s on a formula simplification. DAG size of input: 97 DAG size of output: 99 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 22:31:52,353 WARN L293 SmtUtils]: Spent 32.76s on a formula simplification that was a NOOP. DAG size: 100 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 22:33:25,151 WARN L293 SmtUtils]: Spent 33.28s on a formula simplification. DAG size of input: 102 DAG size of output: 105 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 22:35:13,766 WARN L293 SmtUtils]: Spent 35.90s on a formula simplification that was a NOOP. DAG size: 118 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)