/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/array-crafted/xor1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 18:33:09,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 18:33:09,240 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 18:33:09,243 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 18:33:09,243 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 18:33:09,263 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 18:33:09,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 18:33:09,263 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 18:33:09,264 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 18:33:09,264 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 18:33:09,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 18:33:09,264 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 18:33:09,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 18:33:09,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 18:33:09,265 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 18:33:09,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 18:33:09,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 18:33:09,266 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 18:33:09,266 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 18:33:09,266 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 18:33:09,267 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 18:33:09,270 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 18:33:09,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 18:33:09,271 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 18:33:09,273 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 18:33:09,274 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 18:33:09,274 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 18:33:09,274 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 18:33:09,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 18:33:09,275 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 18:33:09,276 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 18:33:09,276 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 18:33:09,276 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 18:33:09,276 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 18:33:09,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 18:33:09,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 18:33:09,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 18:33:09,277 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 18:33:09,277 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 18:33:09,277 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 18:33:09,277 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 18:33:09,277 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 18:33:09,277 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 18:33:09,277 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 18:33:09,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 18:33:09,278 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 18:33:09,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 18:33:09,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 18:33:09,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 18:33:09,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 18:33:09,509 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 18:33:09,509 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 18:33:09,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor1.i [2023-12-21 18:33:10,596 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 18:33:10,727 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 18:33:10,728 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/xor1.i [2023-12-21 18:33:10,733 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22a278dc/892e78251be0419b9472eff547cf387a/FLAG937248c56 [2023-12-21 18:33:10,742 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22a278dc/892e78251be0419b9472eff547cf387a [2023-12-21 18:33:10,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 18:33:10,745 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 18:33:10,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 18:33:10,746 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 18:33:10,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 18:33:10,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:33:10" (1/1) ... [2023-12-21 18:33:10,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e018093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:33:10, skipping insertion in model container [2023-12-21 18:33:10,751 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:33:10" (1/1) ... [2023-12-21 18:33:10,765 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 18:33:10,917 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/xor1.i[1285,1298] [2023-12-21 18:33:10,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 18:33:10,936 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 18:33:10,966 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/xor1.i[1285,1298] [2023-12-21 18:33:10,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 18:33:10,984 INFO L206 MainTranslator]: Completed translation [2023-12-21 18:33:10,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:33:10 WrapperNode [2023-12-21 18:33:10,985 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 18:33:10,986 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 18:33:10,986 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 18:33:10,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 18:33:10,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:33:10" (1/1) ... [2023-12-21 18:33:11,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:33:10" (1/1) ... [2023-12-21 18:33:11,023 INFO L138 Inliner]: procedures = 18, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 72 [2023-12-21 18:33:11,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 18:33:11,024 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 18:33:11,024 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 18:33:11,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 18:33:11,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:33:10" (1/1) ... [2023-12-21 18:33:11,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:33:10" (1/1) ... [2023-12-21 18:33:11,039 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:33:10" (1/1) ... [2023-12-21 18:33:11,057 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 7, 11]. 55 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0]. The 5 writes are split as follows [0, 0, 5]. [2023-12-21 18:33:11,058 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:33:10" (1/1) ... [2023-12-21 18:33:11,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:33:10" (1/1) ... [2023-12-21 18:33:11,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:33:10" (1/1) ... [2023-12-21 18:33:11,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:33:10" (1/1) ... [2023-12-21 18:33:11,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:33:10" (1/1) ... [2023-12-21 18:33:11,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:33:10" (1/1) ... [2023-12-21 18:33:11,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 18:33:11,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 18:33:11,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 18:33:11,081 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 18:33:11,082 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:33:10" (1/1) ... [2023-12-21 18:33:11,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 18:33:11,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 18:33:11,108 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) [2023-12-21 18:33:11,110 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 [2023-12-21 18:33:11,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 18:33:11,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 18:33:11,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 18:33:11,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 18:33:11,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 18:33:11,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 18:33:11,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 18:33:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 18:33:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 18:33:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 18:33:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2023-12-21 18:33:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2023-12-21 18:33:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 18:33:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 18:33:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 18:33:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 18:33:11,184 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 18:33:11,186 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 18:33:11,349 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 18:33:11,391 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 18:33:11,391 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-21 18:33:11,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:33:11 BoogieIcfgContainer [2023-12-21 18:33:11,391 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 18:33:11,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 18:33:11,393 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 18:33:11,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 18:33:11,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:33:10" (1/3) ... [2023-12-21 18:33:11,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a76d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:33:11, skipping insertion in model container [2023-12-21 18:33:11,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:33:10" (2/3) ... [2023-12-21 18:33:11,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a76d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:33:11, skipping insertion in model container [2023-12-21 18:33:11,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:33:11" (3/3) ... [2023-12-21 18:33:11,397 INFO L112 eAbstractionObserver]: Analyzing ICFG xor1.i [2023-12-21 18:33:11,415 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 18:33:11,415 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 18:33:11,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 18:33:11,472 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;@7e3bf0de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 18:33:11,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 18:33:11,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:33:11,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 18:33:11,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:33:11,481 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:33:11,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:33:11,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:33:11,485 INFO L85 PathProgramCache]: Analyzing trace with hash -287281446, now seen corresponding path program 1 times [2023-12-21 18:33:11,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:33:11,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64577305] [2023-12-21 18:33:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:33:11,501 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 [2023-12-21 18:33:11,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:33:11,504 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) [2023-12-21 18:33:11,542 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 [2023-12-21 18:33:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:33:11,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 18:33:11,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:33:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 18:33:11,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:33:11,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:33:11,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64577305] [2023-12-21 18:33:11,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64577305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:33:11,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:33:11,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 18:33:11,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052113216] [2023-12-21 18:33:11,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:33:11,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 18:33:11,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:33:11,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 18:33:11,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 18:33:11,689 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 18:33:11,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:33:11,714 INFO L93 Difference]: Finished difference Result 38 states and 55 transitions. [2023-12-21 18:33:11,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 18:33:11,716 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-12-21 18:33:11,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:33:11,720 INFO L225 Difference]: With dead ends: 38 [2023-12-21 18:33:11,720 INFO L226 Difference]: Without dead ends: 18 [2023-12-21 18:33:11,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 18:33:11,727 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:33:11,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:33:11,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-21 18:33:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-21 18:33:11,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:33:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-12-21 18:33:11,759 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 25 [2023-12-21 18:33:11,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:33:11,760 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-12-21 18:33:11,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 18:33:11,761 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-12-21 18:33:11,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 18:33:11,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:33:11,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:33:11,768 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 [2023-12-21 18:33:11,966 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 [2023-12-21 18:33:11,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:33:11,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:33:11,967 INFO L85 PathProgramCache]: Analyzing trace with hash 891799584, now seen corresponding path program 1 times [2023-12-21 18:33:11,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:33:11,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564976565] [2023-12-21 18:33:11,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:33:11,968 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 [2023-12-21 18:33:11,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:33:11,969 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) [2023-12-21 18:33:11,987 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 [2023-12-21 18:33:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:33:12,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 18:33:12,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:33:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 18:33:12,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:33:12,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:33:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564976565] [2023-12-21 18:33:12,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564976565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:33:12,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:33:12,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 18:33:12,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658608241] [2023-12-21 18:33:12,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:33:12,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 18:33:12,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:33:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 18:33:12,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 18:33:12,067 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 18:33:12,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:33:12,088 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2023-12-21 18:33:12,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 18:33:12,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-12-21 18:33:12,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:33:12,089 INFO L225 Difference]: With dead ends: 35 [2023-12-21 18:33:12,089 INFO L226 Difference]: Without dead ends: 19 [2023-12-21 18:33:12,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 18:33:12,091 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:33:12,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:33:12,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-21 18:33:12,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-21 18:33:12,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:33:12,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-12-21 18:33:12,101 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 25 [2023-12-21 18:33:12,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:33:12,101 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-12-21 18:33:12,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 18:33:12,101 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-21 18:33:12,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 18:33:12,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:33:12,102 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:33:12,105 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 [2023-12-21 18:33:12,304 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 [2023-12-21 18:33:12,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:33:12,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:33:12,306 INFO L85 PathProgramCache]: Analyzing trace with hash -67578981, now seen corresponding path program 1 times [2023-12-21 18:33:12,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:33:12,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852518491] [2023-12-21 18:33:12,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:33:12,306 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 [2023-12-21 18:33:12,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:33:12,307 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) [2023-12-21 18:33:12,310 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 [2023-12-21 18:33:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:33:12,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 18:33:12,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:33:12,373 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 18:33:12,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:33:12,398 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 18:33:12,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:33:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852518491] [2023-12-21 18:33:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852518491] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:33:12,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:33:12,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2023-12-21 18:33:12,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127248241] [2023-12-21 18:33:12,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:33:12,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 18:33:12,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:33:12,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 18:33:12,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 18:33:12,400 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:33:12,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:33:12,441 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2023-12-21 18:33:12,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 18:33:12,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 26 [2023-12-21 18:33:12,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:33:12,442 INFO L225 Difference]: With dead ends: 38 [2023-12-21 18:33:12,442 INFO L226 Difference]: Without dead ends: 22 [2023-12-21 18:33:12,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 18:33:12,443 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:33:12,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:33:12,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-21 18:33:12,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-21 18:33:12,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:33:12,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-12-21 18:33:12,447 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 26 [2023-12-21 18:33:12,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:33:12,447 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-12-21 18:33:12,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:33:12,448 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-12-21 18:33:12,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-21 18:33:12,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:33:12,448 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:33:12,451 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 [2023-12-21 18:33:12,651 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 [2023-12-21 18:33:12,651 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:33:12,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:33:12,652 INFO L85 PathProgramCache]: Analyzing trace with hash -422818080, now seen corresponding path program 2 times [2023-12-21 18:33:12,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:33:12,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222647695] [2023-12-21 18:33:12,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:33:12,652 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 [2023-12-21 18:33:12,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:33:12,653 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) [2023-12-21 18:33:12,655 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 [2023-12-21 18:33:12,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 18:33:12,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:33:12,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 18:33:12,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:33:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 18:33:12,715 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:33:12,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:33:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222647695] [2023-12-21 18:33:12,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222647695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:33:12,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:33:12,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 18:33:12,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655189099] [2023-12-21 18:33:12,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:33:12,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 18:33:12,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:33:12,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 18:33:12,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 18:33:12,717 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 18:33:12,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:33:12,743 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2023-12-21 18:33:12,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 18:33:12,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2023-12-21 18:33:12,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:33:12,744 INFO L225 Difference]: With dead ends: 37 [2023-12-21 18:33:12,745 INFO L226 Difference]: Without dead ends: 23 [2023-12-21 18:33:12,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 18:33:12,745 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:33:12,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:33:12,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-21 18:33:12,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-21 18:33:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:33:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-21 18:33:12,752 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 29 [2023-12-21 18:33:12,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:33:12,752 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-21 18:33:12,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 18:33:12,753 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-21 18:33:12,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 18:33:12,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:33:12,754 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:33:12,758 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 [2023-12-21 18:33:12,956 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 [2023-12-21 18:33:12,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:33:12,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:33:12,957 INFO L85 PathProgramCache]: Analyzing trace with hash -425396549, now seen corresponding path program 1 times [2023-12-21 18:33:12,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:33:12,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717637297] [2023-12-21 18:33:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:33:12,957 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 [2023-12-21 18:33:12,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:33:12,959 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) [2023-12-21 18:33:12,962 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 [2023-12-21 18:33:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:33:13,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 18:33:13,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:33:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 18:33:13,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:33:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 18:33:13,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:33:13,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717637297] [2023-12-21 18:33:13,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717637297] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:33:13,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:33:13,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-21 18:33:13,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969345901] [2023-12-21 18:33:13,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:33:13,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 18:33:13,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:33:13,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 18:33:13,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 18:33:13,171 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:33:13,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:33:13,326 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2023-12-21 18:33:13,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 18:33:13,327 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 32 [2023-12-21 18:33:13,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:33:13,327 INFO L225 Difference]: With dead ends: 46 [2023-12-21 18:33:13,327 INFO L226 Difference]: Without dead ends: 29 [2023-12-21 18:33:13,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 18:33:13,328 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:33:13,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:33:13,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-21 18:33:13,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-21 18:33:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:33:13,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-12-21 18:33:13,333 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 32 [2023-12-21 18:33:13,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:33:13,333 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-12-21 18:33:13,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:33:13,333 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-12-21 18:33:13,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 18:33:13,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:33:13,334 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:33:13,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 18:33:13,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:33:13,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:33:13,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:33:13,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1150251877, now seen corresponding path program 2 times [2023-12-21 18:33:13,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:33:13,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926950073] [2023-12-21 18:33:13,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:33:13,544 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 [2023-12-21 18:33:13,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:33:13,545 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:33:13,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 18:33:13,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:33:13,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:33:13,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 18:33:13,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:33:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 18:33:13,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:33:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 18:33:14,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:33:14,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926950073] [2023-12-21 18:33:14,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926950073] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:33:14,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:33:14,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2023-12-21 18:33:14,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165166004] [2023-12-21 18:33:14,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:33:14,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 18:33:14,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:33:14,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 18:33:14,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 18:33:14,025 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:33:14,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:33:14,761 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2023-12-21 18:33:14,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 18:33:14,763 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2023-12-21 18:33:14,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:33:14,764 INFO L225 Difference]: With dead ends: 58 [2023-12-21 18:33:14,764 INFO L226 Difference]: Without dead ends: 41 [2023-12-21 18:33:14,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 18:33:14,765 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 18:33:14,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 18:33:14,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-21 18:33:14,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-12-21 18:33:14,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:33:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2023-12-21 18:33:14,771 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 38 [2023-12-21 18:33:14,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:33:14,771 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2023-12-21 18:33:14,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:33:14,772 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2023-12-21 18:33:14,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 18:33:14,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:33:14,776 INFO L195 NwaCegarLoop]: trace histogram [22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:33:14,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 18:33:14,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:33:14,979 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:33:14,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:33:14,980 INFO L85 PathProgramCache]: Analyzing trace with hash -945422245, now seen corresponding path program 3 times [2023-12-21 18:33:14,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:33:14,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243709857] [2023-12-21 18:33:14,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:33:14,981 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 [2023-12-21 18:33:14,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:33:14,983 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) [2023-12-21 18:33:14,989 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 [2023-12-21 18:33:15,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 18:33:15,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:33:15,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 18:33:15,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:33:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-12-21 18:33:15,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:33:15,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:33:15,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243709857] [2023-12-21 18:33:15,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243709857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:33:15,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:33:15,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 18:33:15,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541252225] [2023-12-21 18:33:15,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:33:15,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 18:33:15,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:33:15,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 18:33:15,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 18:33:15,088 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 18:33:15,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:33:15,113 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2023-12-21 18:33:15,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 18:33:15,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2023-12-21 18:33:15,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:33:15,116 INFO L225 Difference]: With dead ends: 53 [2023-12-21 18:33:15,116 INFO L226 Difference]: Without dead ends: 42 [2023-12-21 18:33:15,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 18:33:15,117 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:33:15,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:33:15,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-21 18:33:15,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-21 18:33:15,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:33:15,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-12-21 18:33:15,131 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 50 [2023-12-21 18:33:15,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:33:15,132 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-12-21 18:33:15,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 18:33:15,132 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-12-21 18:33:15,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 18:33:15,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:33:15,136 INFO L195 NwaCegarLoop]: trace histogram [22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:33:15,139 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 [2023-12-21 18:33:15,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-21 18:33:15,339 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:33:15,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:33:15,339 INFO L85 PathProgramCache]: Analyzing trace with hash 456334360, now seen corresponding path program 1 times [2023-12-21 18:33:15,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:33:15,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337554426] [2023-12-21 18:33:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:33:15,341 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 [2023-12-21 18:33:15,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:33:15,344 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:33:15,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 18:33:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:33:15,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 18:33:15,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:33:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 18:33:15,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:33:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 18:33:16,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:33:16,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337554426] [2023-12-21 18:33:16,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337554426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:33:16,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:33:16,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 48 [2023-12-21 18:33:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389362117] [2023-12-21 18:33:16,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:33:16,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 18:33:16,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:33:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 18:33:16,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 18:33:16,841 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:33:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:33:21,507 INFO L93 Difference]: Finished difference Result 84 states and 115 transitions. [2023-12-21 18:33:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 18:33:21,508 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 51 [2023-12-21 18:33:21,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:33:21,509 INFO L225 Difference]: With dead ends: 84 [2023-12-21 18:33:21,509 INFO L226 Difference]: Without dead ends: 66 [2023-12-21 18:33:21,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 18:33:21,511 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 18:33:21,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 467 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 18:33:21,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-21 18:33:21,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-12-21 18:33:21,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:33:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2023-12-21 18:33:21,519 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 51 [2023-12-21 18:33:21,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:33:21,520 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2023-12-21 18:33:21,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:33:21,520 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2023-12-21 18:33:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 18:33:21,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:33:21,521 INFO L195 NwaCegarLoop]: trace histogram [46, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:33:21,527 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 (9)] Forceful destruction successful, exit code 0 [2023-12-21 18:33:21,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 [2023-12-21 18:33:21,726 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:33:21,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:33:21,726 INFO L85 PathProgramCache]: Analyzing trace with hash 29885592, now seen corresponding path program 2 times [2023-12-21 18:33:21,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:33:21,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719484545] [2023-12-21 18:33:21,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:33:21,727 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 [2023-12-21 18:33:21,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:33:21,741 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) [2023-12-21 18:33:21,754 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 [2023-12-21 18:33:21,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:33:21,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:33:21,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 18:33:21,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:33:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 18:33:22,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:33:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 18:33:27,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:33:27,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719484545] [2023-12-21 18:33:27,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719484545] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:33:27,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:33:27,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 49] total 96 [2023-12-21 18:33:27,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579542541] [2023-12-21 18:33:27,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:33:27,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 18:33:27,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:33:27,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 18:33:27,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 18:33:27,097 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 96 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 96 states have internal predecessors, (113), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:34:02,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:34:02,884 INFO L93 Difference]: Finished difference Result 132 states and 187 transitions. [2023-12-21 18:34:02,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 18:34:02,885 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 96 states have internal predecessors, (113), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2023-12-21 18:34:02,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:34:02,885 INFO L225 Difference]: With dead ends: 132 [2023-12-21 18:34:02,885 INFO L226 Difference]: Without dead ends: 114 [2023-12-21 18:34:02,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 18:34:02,889 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 2543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 18:34:02,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 722 Invalid, 2543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 18:34:02,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-21 18:34:02,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-12-21 18:34:02,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 109 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:34:02,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 118 transitions. [2023-12-21 18:34:02,898 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 118 transitions. Word has length 75 [2023-12-21 18:34:02,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:34:02,898 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 118 transitions. [2023-12-21 18:34:02,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 96 states have internal predecessors, (113), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:34:02,898 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 118 transitions. [2023-12-21 18:34:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 18:34:02,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:34:02,899 INFO L195 NwaCegarLoop]: trace histogram [94, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:34:02,903 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 (10)] Ended with exit code 0 [2023-12-21 18:34:03,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 [2023-12-21 18:34:03,100 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:34:03,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:34:03,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1321380456, now seen corresponding path program 3 times [2023-12-21 18:34:03,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:34:03,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106834958] [2023-12-21 18:34:03,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:34:03,101 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 [2023-12-21 18:34:03,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:34:03,109 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2023-12-21 18:34:03,112 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 (11)] Waiting until timeout for monitored process [2023-12-21 18:34:03,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 18:34:03,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:34:03,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 18:34:03,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:34:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4490 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 4477 trivial. 0 not checked. [2023-12-21 18:34:03,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:34:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4490 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 4477 trivial. 0 not checked. [2023-12-21 18:34:03,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:34:03,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106834958] [2023-12-21 18:34:03,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106834958] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:34:03,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:34:03,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-21 18:34:03,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307118650] [2023-12-21 18:34:03,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:34:03,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 18:34:03,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:34:03,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 18:34:03,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 18:34:03,283 INFO L87 Difference]: Start difference. First operand 114 states and 118 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 18:34:03,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:34:03,325 INFO L93 Difference]: Finished difference Result 133 states and 145 transitions. [2023-12-21 18:34:03,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 18:34:03,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 123 [2023-12-21 18:34:03,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:34:03,326 INFO L225 Difference]: With dead ends: 133 [2023-12-21 18:34:03,326 INFO L226 Difference]: Without dead ends: 117 [2023-12-21 18:34:03,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 18:34:03,327 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:34:03,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:34:03,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-21 18:34:03,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-12-21 18:34:03,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 states have internal predecessors, (115), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:34:03,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2023-12-21 18:34:03,335 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 123 [2023-12-21 18:34:03,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:34:03,335 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2023-12-21 18:34:03,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 18:34:03,335 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2023-12-21 18:34:03,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 18:34:03,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:34:03,336 INFO L195 NwaCegarLoop]: trace histogram [94, 12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:34:03,338 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 (11)] Ended with exit code 0 [2023-12-21 18:34:03,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 [2023-12-21 18:34:03,538 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:34:03,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:34:03,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1239885591, now seen corresponding path program 4 times [2023-12-21 18:34:03,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:34:03,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761826132] [2023-12-21 18:34:03,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 18:34:03,539 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 [2023-12-21 18:34:03,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:34:03,540 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2023-12-21 18:34:03,556 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 (12)] Waiting until timeout for monitored process [2023-12-21 18:34:03,785 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 18:34:03,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:34:03,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 18:34:03,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:34:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4580 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-21 18:34:06,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:34:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4580 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-21 18:34:19,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:34:19,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761826132] [2023-12-21 18:34:19,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761826132] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:34:19,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:34:19,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 97] total 192 [2023-12-21 18:34:19,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902300060] [2023-12-21 18:34:19,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:34:19,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 18:34:19,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:34:19,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 18:34:19,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5401, Invalid=31271, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 18:34:19,077 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand has 192 states, 192 states have (on average 1.0885416666666667) internal successors, (209), 192 states have internal predecessors, (209), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:34:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:34:25,140 INFO L93 Difference]: Finished difference Result 144 states and 157 transitions. [2023-12-21 18:34:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-12-21 18:34:25,141 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0885416666666667) internal successors, (209), 192 states have internal predecessors, (209), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 132 [2023-12-21 18:34:25,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:34:25,142 INFO L225 Difference]: With dead ends: 144 [2023-12-21 18:34:25,142 INFO L226 Difference]: Without dead ends: 123 [2023-12-21 18:34:25,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4456 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=5809, Invalid=32411, Unknown=0, NotChecked=0, Total=38220 [2023-12-21 18:34:25,145 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 9362 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 9362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-21 18:34:25,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1472 Invalid, 9362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9362 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-21 18:34:25,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-21 18:34:25,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-12-21 18:34:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.0254237288135593) internal successors, (121), 118 states have internal predecessors, (121), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:34:25,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 127 transitions. [2023-12-21 18:34:25,153 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 127 transitions. Word has length 132 [2023-12-21 18:34:25,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:34:25,153 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 127 transitions. [2023-12-21 18:34:25,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0885416666666667) internal successors, (209), 192 states have internal predecessors, (209), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 18:34:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 127 transitions. [2023-12-21 18:34:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 18:34:25,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:34:25,154 INFO L195 NwaCegarLoop]: trace histogram [100, 12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:34:25,164 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 (12)] Forceful destruction successful, exit code 0 [2023-12-21 18:34:25,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /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 [2023-12-21 18:34:25,362 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:34:25,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:34:25,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2047233271, now seen corresponding path program 5 times [2023-12-21 18:34:25,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:34:25,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965663087] [2023-12-21 18:34:25,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 18:34:25,363 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 [2023-12-21 18:34:25,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:34:25,364 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2023-12-21 18:34:25,398 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 (13)] Waiting until timeout for monitored process [2023-12-21 18:34:28,543 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2023-12-21 18:34:28,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:34:28,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 18:34:28,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:34:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5165 backedges. 81 proven. 10 refuted. 0 times theorem prover too weak. 5074 trivial. 0 not checked. [2023-12-21 18:34:28,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:34:28,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5165 backedges. 27 proven. 37 refuted. 0 times theorem prover too weak. 5101 trivial. 0 not checked. [2023-12-21 18:34:28,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:34:28,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965663087] [2023-12-21 18:34:28,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965663087] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:34:28,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:34:28,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-21 18:34:28,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706094277] [2023-12-21 18:34:28,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:34:28,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 18:34:28,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:34:28,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 18:34:28,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 18:34:28,661 INFO L87 Difference]: Start difference. First operand 123 states and 127 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:34:28,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:34:28,791 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2023-12-21 18:34:28,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 18:34:28,792 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2023-12-21 18:34:28,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:34:28,792 INFO L225 Difference]: With dead ends: 148 [2023-12-21 18:34:28,792 INFO L226 Difference]: Without dead ends: 129 [2023-12-21 18:34:28,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 18:34:28,793 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:34:28,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:34:28,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-21 18:34:28,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-12-21 18:34:28,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 124 states have (on average 1.0241935483870968) internal successors, (127), 124 states have internal predecessors, (127), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:34:28,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2023-12-21 18:34:28,801 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 138 [2023-12-21 18:34:28,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:34:28,801 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2023-12-21 18:34:28,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:34:28,801 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2023-12-21 18:34:28,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 18:34:28,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:34:28,802 INFO L195 NwaCegarLoop]: trace histogram [100, 30, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:34:28,817 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 (13)] Ended with exit code 0 [2023-12-21 18:34:29,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 [2023-12-21 18:34:29,003 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:34:29,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:34:29,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2120319977, now seen corresponding path program 6 times [2023-12-21 18:34:29,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:34:29,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603657289] [2023-12-21 18:34:29,004 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 18:34:29,004 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 [2023-12-21 18:34:29,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:34:29,005 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2023-12-21 18:34:29,037 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 (14)] Waiting until timeout for monitored process [2023-12-21 18:34:29,190 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 18:34:29,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:34:29,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 18:34:29,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:34:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5588 backedges. 248 proven. 1 refuted. 0 times theorem prover too weak. 5339 trivial. 0 not checked. [2023-12-21 18:34:29,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:34:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5588 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5587 trivial. 0 not checked. [2023-12-21 18:34:29,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:34:29,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603657289] [2023-12-21 18:34:29,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603657289] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:34:29,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:34:29,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-21 18:34:29,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888660973] [2023-12-21 18:34:29,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:34:29,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 18:34:29,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:34:29,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 18:34:29,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 18:34:29,228 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:34:29,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:34:29,265 INFO L93 Difference]: Finished difference Result 152 states and 159 transitions. [2023-12-21 18:34:29,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 18:34:29,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 156 [2023-12-21 18:34:29,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:34:29,266 INFO L225 Difference]: With dead ends: 152 [2023-12-21 18:34:29,267 INFO L226 Difference]: Without dead ends: 132 [2023-12-21 18:34:29,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 18:34:29,267 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:34:29,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:34:29,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-21 18:34:29,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-12-21 18:34:29,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.0236220472440944) internal successors, (130), 127 states have internal predecessors, (130), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:34:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2023-12-21 18:34:29,282 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 156 [2023-12-21 18:34:29,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:34:29,282 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 136 transitions. [2023-12-21 18:34:29,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:34:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 136 transitions. [2023-12-21 18:34:29,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 18:34:29,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:34:29,283 INFO L195 NwaCegarLoop]: trace histogram [100, 30, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:34:29,289 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 (14)] Forceful destruction successful, exit code 0 [2023-12-21 18:34:29,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /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 [2023-12-21 18:34:29,487 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:34:29,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:34:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash -410106816, now seen corresponding path program 7 times [2023-12-21 18:34:29,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:34:29,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540645886] [2023-12-21 18:34:29,487 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 18:34:29,488 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 [2023-12-21 18:34:29,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:34:29,489 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2023-12-21 18:34:29,493 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 (15)] Waiting until timeout for monitored process [2023-12-21 18:34:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:34:29,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 18:34:29,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:34:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5597 backedges. 244 proven. 55 refuted. 0 times theorem prover too weak. 5298 trivial. 0 not checked. [2023-12-21 18:34:29,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:34:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5597 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 5296 trivial. 0 not checked. [2023-12-21 18:34:30,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:34:30,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540645886] [2023-12-21 18:34:30,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540645886] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:34:30,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:34:30,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-21 18:34:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155579008] [2023-12-21 18:34:30,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:34:30,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 18:34:30,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:34:30,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 18:34:30,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 18:34:30,195 INFO L87 Difference]: Start difference. First operand 132 states and 136 transitions. Second operand has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 18:34:30,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:34:30,898 INFO L93 Difference]: Finished difference Result 172 states and 193 transitions. [2023-12-21 18:34:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 18:34:30,899 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 159 [2023-12-21 18:34:30,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:34:30,900 INFO L225 Difference]: With dead ends: 172 [2023-12-21 18:34:30,900 INFO L226 Difference]: Without dead ends: 144 [2023-12-21 18:34:30,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 18:34:30,907 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 18:34:30,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 18:34:30,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-21 18:34:30,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2023-12-21 18:34:30,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.0215827338129497) internal successors, (142), 139 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:34:30,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 148 transitions. [2023-12-21 18:34:30,919 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 148 transitions. Word has length 159 [2023-12-21 18:34:30,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:34:30,920 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 148 transitions. [2023-12-21 18:34:30,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 18:34:30,920 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 148 transitions. [2023-12-21 18:34:30,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-21 18:34:30,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:34:30,923 INFO L195 NwaCegarLoop]: trace histogram [100, 66, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:34:30,935 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 (15)] Forceful destruction successful, exit code 0 [2023-12-21 18:34:31,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 [2023-12-21 18:34:31,134 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:34:31,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:34:31,134 INFO L85 PathProgramCache]: Analyzing trace with hash -83422464, now seen corresponding path program 8 times [2023-12-21 18:34:31,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:34:31,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070179232] [2023-12-21 18:34:31,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:34:31,135 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 [2023-12-21 18:34:31,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:34:31,136 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-12-21 18:34:31,157 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 (16)] Waiting until timeout for monitored process [2023-12-21 18:34:31,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:34:31,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:34:31,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 18:34:31,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:34:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7415 backedges. 1060 proven. 253 refuted. 0 times theorem prover too weak. 6102 trivial. 0 not checked. [2023-12-21 18:34:31,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:34:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7415 backedges. 0 proven. 1315 refuted. 0 times theorem prover too weak. 6100 trivial. 0 not checked. [2023-12-21 18:34:32,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:34:32,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070179232] [2023-12-21 18:34:32,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070179232] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:34:32,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:34:32,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-12-21 18:34:32,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085329205] [2023-12-21 18:34:32,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:34:32,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 18:34:32,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:34:32,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 18:34:32,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 18:34:32,934 INFO L87 Difference]: Start difference. First operand 144 states and 148 transitions. Second operand has 48 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 48 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 18:34:37,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:34:37,825 INFO L93 Difference]: Finished difference Result 208 states and 241 transitions. [2023-12-21 18:34:37,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 18:34:37,827 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 48 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 195 [2023-12-21 18:34:37,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:34:37,828 INFO L225 Difference]: With dead ends: 208 [2023-12-21 18:34:37,828 INFO L226 Difference]: Without dead ends: 168 [2023-12-21 18:34:37,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 18:34:37,837 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 18:34:37,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 362 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 18:34:37,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-21 18:34:37,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-12-21 18:34:37,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.01840490797546) internal successors, (166), 163 states have internal predecessors, (166), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:34:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 172 transitions. [2023-12-21 18:34:37,845 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 172 transitions. Word has length 195 [2023-12-21 18:34:37,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:34:37,845 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 172 transitions. [2023-12-21 18:34:37,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 48 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 18:34:37,845 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 172 transitions. [2023-12-21 18:34:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-21 18:34:37,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:34:37,846 INFO L195 NwaCegarLoop]: trace histogram [138, 100, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:34:37,872 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 (16)] Forceful destruction successful, exit code 0 [2023-12-21 18:34:38,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 [2023-12-21 18:34:38,058 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:34:38,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:34:38,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1052086400, now seen corresponding path program 9 times [2023-12-21 18:34:38,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:34:38,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094132454] [2023-12-21 18:34:38,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:34:38,059 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 [2023-12-21 18:34:38,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:34:38,060 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2023-12-21 18:34:38,064 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 (17)] Waiting until timeout for monitored process [2023-12-21 18:34:38,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 18:34:38,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:34:38,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 18:34:38,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:34:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 14939 backedges. 4424 proven. 10 refuted. 0 times theorem prover too weak. 10505 trivial. 0 not checked. [2023-12-21 18:34:38,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:34:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 14939 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14929 trivial. 0 not checked. [2023-12-21 18:34:38,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:34:38,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094132454] [2023-12-21 18:34:38,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094132454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:34:38,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:34:38,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-21 18:34:38,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62338643] [2023-12-21 18:34:38,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:34:38,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 18:34:38,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:34:38,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 18:34:38,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 18:34:38,456 INFO L87 Difference]: Start difference. First operand 168 states and 172 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:34:38,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:34:38,596 INFO L93 Difference]: Finished difference Result 230 states and 240 transitions. [2023-12-21 18:34:38,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 18:34:38,596 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 267 [2023-12-21 18:34:38,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:34:38,597 INFO L225 Difference]: With dead ends: 230 [2023-12-21 18:34:38,597 INFO L226 Difference]: Without dead ends: 174 [2023-12-21 18:34:38,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 18:34:38,598 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:34:38,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:34:38,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-21 18:34:38,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2023-12-21 18:34:38,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.017751479289941) internal successors, (172), 169 states have internal predecessors, (172), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:34:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 178 transitions. [2023-12-21 18:34:38,606 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 178 transitions. Word has length 267 [2023-12-21 18:34:38,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:34:38,606 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 178 transitions. [2023-12-21 18:34:38,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:34:38,606 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 178 transitions. [2023-12-21 18:34:38,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-21 18:34:38,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:34:38,607 INFO L195 NwaCegarLoop]: trace histogram [138, 100, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:34:38,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-21 18:34:38,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 [2023-12-21 18:34:38,809 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:34:38,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:34:38,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1850007264, now seen corresponding path program 10 times [2023-12-21 18:34:38,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:34:38,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611300477] [2023-12-21 18:34:38,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 18:34:38,810 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 [2023-12-21 18:34:38,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:34:38,811 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2023-12-21 18:34:38,812 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 (18)] Waiting until timeout for monitored process [2023-12-21 18:34:39,385 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 18:34:39,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:34:39,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 18:34:39,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:34:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 14984 backedges. 4420 proven. 1081 refuted. 0 times theorem prover too weak. 9483 trivial. 0 not checked. [2023-12-21 18:34:40,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:34:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 14984 backedges. 0 proven. 5503 refuted. 0 times theorem prover too weak. 9481 trivial. 0 not checked. [2023-12-21 18:34:44,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:34:44,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611300477] [2023-12-21 18:34:44,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611300477] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:34:44,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:34:44,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 96 [2023-12-21 18:34:44,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716488132] [2023-12-21 18:34:44,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:34:44,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 18:34:44,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:34:44,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 18:34:44,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 18:34:44,887 INFO L87 Difference]: Start difference. First operand 174 states and 178 transitions. Second operand has 96 states, 96 states have (on average 1.2083333333333333) internal successors, (116), 96 states have internal predecessors, (116), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 18:35:23,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:35:23,731 INFO L93 Difference]: Finished difference Result 292 states and 349 transitions. [2023-12-21 18:35:23,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 18:35:23,733 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.2083333333333333) internal successors, (116), 96 states have internal predecessors, (116), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 273 [2023-12-21 18:35:23,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:35:23,734 INFO L225 Difference]: With dead ends: 292 [2023-12-21 18:35:23,734 INFO L226 Difference]: Without dead ends: 222 [2023-12-21 18:35:23,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 42.3s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 18:35:23,735 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 2547 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 18:35:23,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 737 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2547 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 18:35:23,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-12-21 18:35:23,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2023-12-21 18:35:23,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.0138248847926268) internal successors, (220), 217 states have internal predecessors, (220), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:35:23,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 226 transitions. [2023-12-21 18:35:23,745 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 226 transitions. Word has length 273 [2023-12-21 18:35:23,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:35:23,746 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 226 transitions. [2023-12-21 18:35:23,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.2083333333333333) internal successors, (116), 96 states have internal predecessors, (116), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 18:35:23,746 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 226 transitions. [2023-12-21 18:35:23,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-12-21 18:35:23,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:35:23,747 INFO L195 NwaCegarLoop]: trace histogram [282, 100, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:35:23,780 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 (18)] Forceful destruction successful, exit code 0 [2023-12-21 18:35:23,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 [2023-12-21 18:35:23,961 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:35:23,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:35:23,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1490101216, now seen corresponding path program 11 times [2023-12-21 18:35:23,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:35:23,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129826257] [2023-12-21 18:35:23,963 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 18:35:23,963 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 [2023-12-21 18:35:23,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:35:23,964 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-12-21 18:35:23,965 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 (19)] Waiting until timeout for monitored process [2023-12-21 18:35:57,161 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2023-12-21 18:35:57,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:35:57,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-21 18:35:57,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:35:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 45584 backedges. 18052 proven. 4465 refuted. 0 times theorem prover too weak. 23067 trivial. 0 not checked. [2023-12-21 18:35:59,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:36:18,789 INFO L134 CoverageAnalysis]: Checked inductivity of 45584 backedges. 0 proven. 22519 refuted. 0 times theorem prover too weak. 23065 trivial. 0 not checked. [2023-12-21 18:36:18,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:36:18,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129826257] [2023-12-21 18:36:18,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129826257] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:36:18,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:36:18,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 192 [2023-12-21 18:36:18,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734105700] [2023-12-21 18:36:18,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:36:18,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 18:36:18,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:36:18,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 18:36:18,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=27356, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 18:36:18,805 INFO L87 Difference]: Start difference. First operand 222 states and 226 transitions. Second operand has 192 states, 192 states have (on average 1.1041666666666667) internal successors, (212), 192 states have internal predecessors, (212), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 18:42:12,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:42:12,047 INFO L93 Difference]: Finished difference Result 436 states and 541 transitions. [2023-12-21 18:42:12,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-21 18:42:12,049 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.1041666666666667) internal successors, (212), 192 states have internal predecessors, (212), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 417 [2023-12-21 18:42:12,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:42:12,050 INFO L225 Difference]: With dead ends: 436 [2023-12-21 18:42:12,050 INFO L226 Difference]: Without dead ends: 318 [2023-12-21 18:42:12,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 927 GetRequests, 642 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8919 ImplicationChecksByTransitivity, 368.6s TimeCoverageRelationStatistics Valid=22917, Invalid=59165, Unknown=0, NotChecked=0, Total=82082 [2023-12-21 18:42:12,055 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 184 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 5675 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 5774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 5675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-21 18:42:12,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1441 Invalid, 5774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 5675 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-21 18:42:12,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-12-21 18:42:12,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2023-12-21 18:42:12,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 313 states have (on average 1.012779552715655) internal successors, (317), 313 states have internal predecessors, (317), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:42:12,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 323 transitions. [2023-12-21 18:42:12,085 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 323 transitions. Word has length 417 [2023-12-21 18:42:12,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:42:12,085 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 323 transitions. [2023-12-21 18:42:12,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.1041666666666667) internal successors, (212), 192 states have internal predecessors, (212), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 18:42:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 323 transitions. [2023-12-21 18:42:12,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-12-21 18:42:12,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:42:12,087 INFO L195 NwaCegarLoop]: trace histogram [297, 100, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:42:12,123 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 (19)] Forceful destruction successful, exit code 0 [2023-12-21 18:42:12,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 [2023-12-21 18:42:12,312 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:42:12,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:42:12,313 INFO L85 PathProgramCache]: Analyzing trace with hash -551842629, now seen corresponding path program 12 times [2023-12-21 18:42:12,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:42:12,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932842134] [2023-12-21 18:42:12,314 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 18:42:12,314 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 [2023-12-21 18:42:12,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:42:12,315 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-12-21 18:42:12,317 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 (20)] Waiting until timeout for monitored process [2023-12-21 18:42:13,346 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-21 18:42:13,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:42:13,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 18:42:13,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:42:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 49964 backedges. 20006 proven. 55 refuted. 0 times theorem prover too weak. 29903 trivial. 0 not checked. [2023-12-21 18:42:13,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:42:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 49964 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 49909 trivial. 0 not checked. [2023-12-21 18:42:13,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:42:13,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932842134] [2023-12-21 18:42:13,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932842134] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:42:13,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:42:13,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-21 18:42:13,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579000124] [2023-12-21 18:42:13,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:42:13,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 18:42:13,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:42:13,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 18:42:13,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 18:42:13,769 INFO L87 Difference]: Start difference. First operand 318 states and 323 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:42:14,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:42:14,554 INFO L93 Difference]: Finished difference Result 530 states and 548 transitions. [2023-12-21 18:42:14,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 18:42:14,555 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 432 [2023-12-21 18:42:14,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:42:14,560 INFO L225 Difference]: With dead ends: 530 [2023-12-21 18:42:14,560 INFO L226 Difference]: Without dead ends: 330 [2023-12-21 18:42:14,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 840 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 18:42:14,561 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 18:42:14,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 241 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 18:42:14,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-21 18:42:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2023-12-21 18:42:14,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 325 states have (on average 1.0123076923076924) internal successors, (329), 325 states have internal predecessors, (329), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:42:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 335 transitions. [2023-12-21 18:42:14,583 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 335 transitions. Word has length 432 [2023-12-21 18:42:14,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:42:14,584 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 335 transitions. [2023-12-21 18:42:14,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:42:14,584 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 335 transitions. [2023-12-21 18:42:14,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2023-12-21 18:42:14,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:42:14,586 INFO L195 NwaCegarLoop]: trace histogram [297, 100, 22, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:42:14,594 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 (20)] Forceful destruction successful, exit code 0 [2023-12-21 18:42:14,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 [2023-12-21 18:42:14,793 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:42:14,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:42:14,794 INFO L85 PathProgramCache]: Analyzing trace with hash 475796091, now seen corresponding path program 13 times [2023-12-21 18:42:14,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:42:14,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490984229] [2023-12-21 18:42:14,794 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 18:42:14,795 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 [2023-12-21 18:42:14,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:42:14,799 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-12-21 18:42:14,802 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 (21)] Waiting until timeout for monitored process [2023-12-21 18:42:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:42:19,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 18:42:19,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:42:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 50162 backedges. 20006 proven. 253 refuted. 0 times theorem prover too weak. 29903 trivial. 0 not checked. [2023-12-21 18:42:19,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:42:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 50162 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 49909 trivial. 0 not checked. [2023-12-21 18:42:20,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:42:20,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490984229] [2023-12-21 18:42:20,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490984229] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:42:20,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:42:20,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-12-21 18:42:20,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037962270] [2023-12-21 18:42:20,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:42:20,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 18:42:20,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:42:20,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 18:42:20,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 18:42:20,726 INFO L87 Difference]: Start difference. First operand 330 states and 335 transitions. Second operand has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:42:26,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:42:26,175 INFO L93 Difference]: Finished difference Result 554 states and 584 transitions. [2023-12-21 18:42:26,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 18:42:26,176 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 444 [2023-12-21 18:42:26,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:42:26,177 INFO L225 Difference]: With dead ends: 554 [2023-12-21 18:42:26,177 INFO L226 Difference]: Without dead ends: 354 [2023-12-21 18:42:26,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 840 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 18:42:26,178 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 18:42:26,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 353 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 18:42:26,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-12-21 18:42:26,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2023-12-21 18:42:26,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 349 states have (on average 1.011461318051576) internal successors, (353), 349 states have internal predecessors, (353), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:42:26,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 359 transitions. [2023-12-21 18:42:26,202 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 359 transitions. Word has length 444 [2023-12-21 18:42:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:42:26,202 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 359 transitions. [2023-12-21 18:42:26,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:42:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 359 transitions. [2023-12-21 18:42:26,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-21 18:42:26,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:42:26,204 INFO L195 NwaCegarLoop]: trace histogram [297, 100, 46, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:42:26,237 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 (21)] Forceful destruction successful, exit code 0 [2023-12-21 18:42:26,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 [2023-12-21 18:42:26,433 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:42:26,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:42:26,433 INFO L85 PathProgramCache]: Analyzing trace with hash 666713595, now seen corresponding path program 14 times [2023-12-21 18:42:26,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:42:26,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581376475] [2023-12-21 18:42:26,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:42:26,434 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 [2023-12-21 18:42:26,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:42:26,435 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-12-21 18:42:26,468 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 (22)] Waiting until timeout for monitored process [2023-12-21 18:42:32,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:42:32,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:42:32,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 18:42:32,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:42:33,547 INFO L134 CoverageAnalysis]: Checked inductivity of 50990 backedges. 20006 proven. 1081 refuted. 0 times theorem prover too weak. 29903 trivial. 0 not checked. [2023-12-21 18:42:33,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:42:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 50990 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 49909 trivial. 0 not checked. [2023-12-21 18:42:38,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:42:38,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581376475] [2023-12-21 18:42:38,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581376475] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:42:38,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:42:38,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 96 [2023-12-21 18:42:38,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300641403] [2023-12-21 18:42:38,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:42:38,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 18:42:38,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:42:38,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 18:42:38,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 18:42:38,172 INFO L87 Difference]: Start difference. First operand 354 states and 359 transitions. Second operand has 96 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 96 states have internal predecessors, (113), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:43:17,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:43:17,375 INFO L93 Difference]: Finished difference Result 602 states and 656 transitions. [2023-12-21 18:43:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 18:43:17,379 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 96 states have internal predecessors, (113), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 468 [2023-12-21 18:43:17,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:43:17,380 INFO L225 Difference]: With dead ends: 602 [2023-12-21 18:43:17,380 INFO L226 Difference]: Without dead ends: 402 [2023-12-21 18:43:17,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 840 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 18:43:17,382 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 2613 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 18:43:17,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 731 Invalid, 2614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2613 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 18:43:17,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-21 18:43:17,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2023-12-21 18:43:17,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 397 states have (on average 1.0100755667506298) internal successors, (401), 397 states have internal predecessors, (401), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 18:43:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 407 transitions. [2023-12-21 18:43:17,440 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 407 transitions. Word has length 468 [2023-12-21 18:43:17,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:43:17,440 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 407 transitions. [2023-12-21 18:43:17,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 96 states have internal predecessors, (113), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:43:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 407 transitions. [2023-12-21 18:43:17,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-21 18:43:17,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:43:17,442 INFO L195 NwaCegarLoop]: trace histogram [297, 100, 94, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:43:17,479 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 (22)] Forceful destruction successful, exit code 0 [2023-12-21 18:43:17,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 [2023-12-21 18:43:17,643 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:43:17,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:43:17,644 INFO L85 PathProgramCache]: Analyzing trace with hash -599780101, now seen corresponding path program 15 times [2023-12-21 18:43:17,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:43:17,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382289924] [2023-12-21 18:43:17,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:43:17,645 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 [2023-12-21 18:43:17,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:43:17,646 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-12-21 18:43:17,655 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 (23)] Waiting until timeout for monitored process [2023-12-21 18:44:28,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 49 check-sat command(s) [2023-12-21 18:44:28,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:44:28,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 1580 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-21 18:44:28,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:44:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 54374 backedges. 20006 proven. 4465 refuted. 0 times theorem prover too weak. 29903 trivial. 0 not checked. [2023-12-21 18:44:31,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:44:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 54374 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 49909 trivial. 0 not checked. [2023-12-21 18:44:49,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:44:49,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382289924] [2023-12-21 18:44:49,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382289924] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:44:49,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:44:49,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 192 [2023-12-21 18:44:49,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163065730] [2023-12-21 18:44:49,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:44:49,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 18:44:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:44:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 18:44:49,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=27356, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 18:44:49,142 INFO L87 Difference]: Start difference. First operand 402 states and 407 transitions. Second operand has 192 states, 192 states have (on average 1.0885416666666667) internal successors, (209), 192 states have internal predecessors, (209), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:45:00,652 WARN L293 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 472 DAG size of output: 460 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 18:47:50,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2023-12-21 18:47:50,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 840 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4950 ImplicationChecksByTransitivity, 196.6s TimeCoverageRelationStatistics Valid=12900, Invalid=37052, Unknown=0, NotChecked=0, Total=49952 [2023-12-21 18:47:50,918 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 90 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 5575 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 5580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:47:50,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 972 Invalid, 5580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 5575 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-21 18:47:50,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 18:47:50,936 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 [2023-12-21 18:47:50,948 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 (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 18:47:50,995 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 (23)] Forceful destruction successful, exit code 0 [2023-12-21 18:47:51,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 [2023-12-21 18:47:51,130 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (402states) and FLOYD_HOARE automaton (currently 129 states, 192 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 224 known predicates. [2023-12-21 18:47:51,135 INFO L445 BasicCegarLoop]: Path program histogram: [15, 3, 2, 1, 1] [2023-12-21 18:47:51,137 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 18:47:51,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:47:51 BoogieIcfgContainer [2023-12-21 18:47:51,138 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 18:47:51,139 INFO L158 Benchmark]: Toolchain (without parser) took 880394.09ms. Allocated memory was 308.3MB in the beginning and 629.1MB in the end (delta: 320.9MB). Free memory was 254.7MB in the beginning and 377.3MB in the end (delta: -122.6MB). Peak memory consumption was 197.9MB. Max. memory is 8.0GB. [2023-12-21 18:47:51,139 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 208.7MB. Free memory is still 155.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 18:47:51,139 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.62ms. Allocated memory is still 308.3MB. Free memory was 254.7MB in the beginning and 242.7MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 18:47:51,139 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.42ms. Allocated memory is still 308.3MB. Free memory was 242.7MB in the beginning and 241.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 18:47:51,139 INFO L158 Benchmark]: Boogie Preprocessor took 56.64ms. Allocated memory is still 308.3MB. Free memory was 241.1MB in the beginning and 239.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 18:47:51,140 INFO L158 Benchmark]: RCFGBuilder took 310.58ms. Allocated memory is still 308.3MB. Free memory was 239.0MB in the beginning and 223.3MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-21 18:47:51,140 INFO L158 Benchmark]: TraceAbstraction took 879745.23ms. Allocated memory was 308.3MB in the beginning and 629.1MB in the end (delta: 320.9MB). Free memory was 222.8MB in the beginning and 377.3MB in the end (delta: -154.5MB). Peak memory consumption was 166.5MB. Max. memory is 8.0GB. [2023-12-21 18:47:51,141 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 208.7MB. Free memory is still 155.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 239.62ms. Allocated memory is still 308.3MB. Free memory was 254.7MB in the beginning and 242.7MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.42ms. Allocated memory is still 308.3MB. Free memory was 242.7MB in the beginning and 241.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.64ms. Allocated memory is still 308.3MB. Free memory was 241.1MB in the beginning and 239.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 310.58ms. Allocated memory is still 308.3MB. Free memory was 239.0MB in the beginning and 223.3MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 879745.23ms. Allocated memory was 308.3MB in the beginning and 629.1MB in the end (delta: 320.9MB). Free memory was 222.8MB in the beginning and 377.3MB in the end (delta: -154.5MB). Peak memory consumption was 166.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 53). Cancelled while NwaCegarLoop was constructing difference of abstraction (402states) and FLOYD_HOARE automaton (currently 129 states, 192 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 224 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 879.7s, OverallIterations: 22, TraceHistogramMax: 297, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 673.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 274 SdHoareTripleChecker+Valid, 19.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 274 mSDsluCounter, 8489 SdHoareTripleChecker+Invalid, 16.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8120 mSDsCounter, 119 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31448 IncrementalHoareTripleChecker+Invalid, 31567 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 119 mSolverCounterUnsat, 369 mSDtfsCounter, 31448 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8354 GetRequests, 6872 SyntacticMatches, 0 SemanticMatches, 1481 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22276 ImplicationChecksByTransitivity, 725.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=402occurred in iteration=21, InterpolantAutomatonStates: 864, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 21 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 118.1s SatisfiabilityAnalysisTime, 80.2s InterpolantComputationTime, 4071 NumberOfCodeBlocks, 3082 NumberOfCodeBlocksAsserted, 239 NumberOfCheckSat, 7973 ConstructedInterpolants, 0 QuantifiedInterpolants, 12549 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11712 ConjunctsInSsa, 577 ConjunctsInUnsatCore, 40 InterpolantComputations, 4 PerfectInterpolantSequences, 572006/631007 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown