/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/reducercommutativity/rangesum60.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:55:00,376 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:55:00,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 06:55:00,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:55:00,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:55:00,474 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:55:00,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:55:00,475 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:55:00,475 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:55:00,478 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:55:00,478 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:55:00,479 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:55:00,479 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:55:00,480 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:55:00,480 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:55:00,481 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:55:00,481 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:55:00,481 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:55:00,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:55:00,482 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:55:00,482 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:55:00,482 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:55:00,482 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:55:00,483 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 06:55:00,483 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 06:55:00,483 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:55:00,483 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 06:55:00,483 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:55:00,484 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:55:00,484 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:55:00,485 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:55:00,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:55:00,485 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:55:00,485 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:55:00,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:55:00,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:55:00,486 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:55:00,486 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:55:00,486 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 06:55:00,486 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 06:55:00,486 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:55:00,486 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:55:00,486 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:55:00,486 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:55:00,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:55:00,487 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 06:55:00,487 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 06:55:00,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:55:00,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:55:00,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:55:00,730 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:55:00,730 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:55:00,732 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum60.i [2023-12-16 06:55:01,797 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:55:01,953 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:55:01,953 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum60.i [2023-12-16 06:55:01,959 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f6d709d5/faaacd480e8e4576b17b2f4c9a0f60fb/FLAGeee9785e9 [2023-12-16 06:55:01,970 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f6d709d5/faaacd480e8e4576b17b2f4c9a0f60fb [2023-12-16 06:55:01,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:55:01,974 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:55:01,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:55:01,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:55:01,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:55:01,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:55:01" (1/1) ... [2023-12-16 06:55:01,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a869e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:55:01, skipping insertion in model container [2023-12-16 06:55:01,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:55:01" (1/1) ... [2023-12-16 06:55:01,998 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:55:02,121 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum60.i[1465,1478] [2023-12-16 06:55:02,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:55:02,130 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:55:02,165 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum60.i[1465,1478] [2023-12-16 06:55:02,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:55:02,176 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:55:02,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:55:02 WrapperNode [2023-12-16 06:55:02,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:55:02,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:55:02,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:55:02,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:55:02,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:55:02" (1/1) ... [2023-12-16 06:55:02,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:55:02" (1/1) ... [2023-12-16 06:55:02,210 INFO L138 Inliner]: procedures = 19, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2023-12-16 06:55:02,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:55:02,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:55:02,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:55:02,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:55:02,217 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:55:02" (1/1) ... [2023-12-16 06:55:02,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:55:02" (1/1) ... [2023-12-16 06:55:02,220 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:55:02" (1/1) ... [2023-12-16 06:55:02,228 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2023-12-16 06:55:02,229 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:55:02" (1/1) ... [2023-12-16 06:55:02,229 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:55:02" (1/1) ... [2023-12-16 06:55:02,235 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:55:02" (1/1) ... [2023-12-16 06:55:02,237 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:55:02" (1/1) ... [2023-12-16 06:55:02,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:55:02" (1/1) ... [2023-12-16 06:55:02,239 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:55:02" (1/1) ... [2023-12-16 06:55:02,241 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:55:02,241 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:55:02,241 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:55:02,241 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:55:02,242 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:55:02" (1/1) ... [2023-12-16 06:55:02,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:55:02,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:55:02,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 06:55:02,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 06:55:02,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:55:02,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 06:55:02,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 06:55:02,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 06:55:02,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 06:55:02,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 06:55:02,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:55:02,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:55:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2023-12-16 06:55:02,321 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2023-12-16 06:55:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 06:55:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 06:55:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 06:55:02,418 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:55:02,420 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:55:02,897 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:55:02,919 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:55:02,919 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-16 06:55:02,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:55:02 BoogieIcfgContainer [2023-12-16 06:55:02,920 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:55:02,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:55:02,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:55:02,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:55:02,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:55:01" (1/3) ... [2023-12-16 06:55:02,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2511705e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:55:02, skipping insertion in model container [2023-12-16 06:55:02,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:55:02" (2/3) ... [2023-12-16 06:55:02,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2511705e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:55:02, skipping insertion in model container [2023-12-16 06:55:02,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:55:02" (3/3) ... [2023-12-16 06:55:02,926 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum60.i [2023-12-16 06:55:02,939 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:55:02,939 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:55:02,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:55:02,989 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;@3ed66b1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:55:02,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:55:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 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) [2023-12-16 06:55:02,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 06:55:02,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:02,998 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:02,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:03,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:03,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1502132506, now seen corresponding path program 1 times [2023-12-16 06:55:03,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:03,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64395813] [2023-12-16 06:55:03,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:55:03,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:03,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:03,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 06:55:03,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 06:55:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:55:03,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 06:55:03,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 06:55:03,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:55:03,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:03,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64395813] [2023-12-16 06:55:03,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64395813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:55:03,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:55:03,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 06:55:03,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088730512] [2023-12-16 06:55:03,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:55:03,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 06:55:03,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:03,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 06:55:03,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:55:03,380 INFO L87 Difference]: Start difference. First operand has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 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) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2023-12-16 06:55:03,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:03,415 INFO L93 Difference]: Finished difference Result 44 states and 65 transitions. [2023-12-16 06:55:03,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 06:55:03,418 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 28 [2023-12-16 06:55:03,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:03,422 INFO L225 Difference]: With dead ends: 44 [2023-12-16 06:55:03,422 INFO L226 Difference]: Without dead ends: 21 [2023-12-16 06:55:03,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:55:03,427 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:03,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:55:03,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-16 06:55:03,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-16 06:55:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.3125) internal successors, (21), 16 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) [2023-12-16 06:55:03,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-12-16 06:55:03,481 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 28 [2023-12-16 06:55:03,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:03,481 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-12-16 06:55:03,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2023-12-16 06:55:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-12-16 06:55:03,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 06:55:03,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:03,483 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:03,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 06:55:03,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:03,698 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:03,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:03,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1260265879, now seen corresponding path program 1 times [2023-12-16 06:55:03,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:03,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938195211] [2023-12-16 06:55:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:55:03,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:03,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:03,702 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 06:55:03,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 06:55:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:55:04,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 06:55:04,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 06:55:04,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:55:04,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:04,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938195211] [2023-12-16 06:55:04,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938195211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:55:04,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:55:04,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 06:55:04,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691320225] [2023-12-16 06:55:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:55:04,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:55:04,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:04,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:55:04,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:55:04,049 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-12-16 06:55:04,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:04,075 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2023-12-16 06:55:04,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:55:04,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 28 [2023-12-16 06:55:04,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:04,077 INFO L225 Difference]: With dead ends: 41 [2023-12-16 06:55:04,077 INFO L226 Difference]: Without dead ends: 22 [2023-12-16 06:55:04,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:55:04,079 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:04,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:55:04,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-16 06:55:04,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-16 06:55:04,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 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) [2023-12-16 06:55:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-12-16 06:55:04,095 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 28 [2023-12-16 06:55:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:04,095 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-12-16 06:55:04,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-12-16 06:55:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-12-16 06:55:04,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-16 06:55:04,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:04,097 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:04,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 06:55:04,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:04,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:04,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash -432814053, now seen corresponding path program 1 times [2023-12-16 06:55:04,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:04,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937103401] [2023-12-16 06:55:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:55:04,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:04,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:04,315 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 06:55:04,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 06:55:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:55:04,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:55:04,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 06:55:04,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:55:04,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 06:55:04,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:04,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937103401] [2023-12-16 06:55:04,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937103401] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:55:04,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:55:04,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2023-12-16 06:55:04,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420959623] [2023-12-16 06:55:04,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:55:04,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:55:04,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:04,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:55:04,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:55:04,748 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2023-12-16 06:55:04,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:04,812 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2023-12-16 06:55:04,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:55:04,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 29 [2023-12-16 06:55:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:04,815 INFO L225 Difference]: With dead ends: 44 [2023-12-16 06:55:04,815 INFO L226 Difference]: Without dead ends: 25 [2023-12-16 06:55:04,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:55:04,816 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:04,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:55:04,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-16 06:55:04,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-16 06:55:04,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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) [2023-12-16 06:55:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-12-16 06:55:04,820 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 29 [2023-12-16 06:55:04,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:04,820 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-12-16 06:55:04,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2023-12-16 06:55:04,820 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-12-16 06:55:04,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-16 06:55:04,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:04,823 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] [2023-12-16 06:55:04,845 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 [2023-12-16 06:55:05,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:05,037 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:05,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:05,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1860680425, now seen corresponding path program 2 times [2023-12-16 06:55:05,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:05,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555310671] [2023-12-16 06:55:05,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:55:05,038 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:05,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:05,043 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 06:55:05,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 06:55:05,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 06:55:05,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:55:05,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 06:55:05,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 06:55:05,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:55:05,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:05,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555310671] [2023-12-16 06:55:05,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555310671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:55:05,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:55:05,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:55:05,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8815508] [2023-12-16 06:55:05,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:55:05,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:55:05,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:05,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:55:05,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:55:05,196 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-12-16 06:55:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:05,240 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2023-12-16 06:55:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:55:05,241 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), 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 32 [2023-12-16 06:55:05,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:05,244 INFO L225 Difference]: With dead ends: 45 [2023-12-16 06:55:05,244 INFO L226 Difference]: Without dead ends: 28 [2023-12-16 06:55:05,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:55:05,246 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:05,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:55:05,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-16 06:55:05,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-12-16 06:55:05,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 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) [2023-12-16 06:55:05,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2023-12-16 06:55:05,250 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 32 [2023-12-16 06:55:05,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:05,250 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2023-12-16 06:55:05,250 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), 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) [2023-12-16 06:55:05,250 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2023-12-16 06:55:05,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-16 06:55:05,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:05,251 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:05,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 06:55:05,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:05,462 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:05,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:05,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1838186572, now seen corresponding path program 1 times [2023-12-16 06:55:05,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:05,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880696645] [2023-12-16 06:55:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:55:05,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:05,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:05,467 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 06:55:05,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 06:55:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:55:05,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:55:05,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-16 06:55:05,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:55:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-16 06:55:05,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:05,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880696645] [2023-12-16 06:55:05,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880696645] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:55:05,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:55:05,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-16 06:55:05,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137455818] [2023-12-16 06:55:05,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:55:05,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 06:55:05,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:05,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 06:55:05,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 06:55:05,917 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2023-12-16 06:55:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:06,097 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2023-12-16 06:55:06,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 06:55:06,100 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 41 [2023-12-16 06:55:06,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:06,101 INFO L225 Difference]: With dead ends: 54 [2023-12-16 06:55:06,101 INFO L226 Difference]: Without dead ends: 33 [2023-12-16 06:55:06,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-16 06:55:06,102 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:06,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:55:06,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-16 06:55:06,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-12-16 06:55:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 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) [2023-12-16 06:55:06,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2023-12-16 06:55:06,106 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 41 [2023-12-16 06:55:06,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:06,106 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2023-12-16 06:55:06,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2023-12-16 06:55:06,107 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2023-12-16 06:55:06,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-16 06:55:06,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:06,107 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:06,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 06:55:06,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:06,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:06,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:06,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1916929268, now seen corresponding path program 2 times [2023-12-16 06:55:06,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:06,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142257141] [2023-12-16 06:55:06,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:55:06,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:06,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:06,319 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 06:55:06,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 06:55:06,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 06:55:06,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:55:06,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 06:55:06,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-16 06:55:06,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:55:06,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:06,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142257141] [2023-12-16 06:55:06,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142257141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:55:06,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:55:06,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:55:06,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691560586] [2023-12-16 06:55:06,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:55:06,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:55:06,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:06,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:55:06,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:55:06,473 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-12-16 06:55:06,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:06,663 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2023-12-16 06:55:06,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:55:06,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 47 [2023-12-16 06:55:06,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:06,665 INFO L225 Difference]: With dead ends: 58 [2023-12-16 06:55:06,665 INFO L226 Difference]: Without dead ends: 39 [2023-12-16 06:55:06,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:55:06,668 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:06,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 42 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:55:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-16 06:55:06,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2023-12-16 06:55:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.21875) internal successors, (39), 32 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) [2023-12-16 06:55:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-12-16 06:55:06,676 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 47 [2023-12-16 06:55:06,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:06,677 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-12-16 06:55:06,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-12-16 06:55:06,677 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-12-16 06:55:06,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-16 06:55:06,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:06,678 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:06,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 06:55:06,884 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 [2023-12-16 06:55:06,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:06,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:06,885 INFO L85 PathProgramCache]: Analyzing trace with hash 693749521, now seen corresponding path program 1 times [2023-12-16 06:55:06,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:06,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935885843] [2023-12-16 06:55:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:55:06,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:06,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:06,887 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) [2023-12-16 06:55:06,890 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 [2023-12-16 06:55:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:55:06,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 06:55:06,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-16 06:55:07,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:55:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-16 06:55:07,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:07,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935885843] [2023-12-16 06:55:07,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935885843] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:55:07,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:55:07,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2023-12-16 06:55:07,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885094607] [2023-12-16 06:55:07,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:55:07,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 06:55:07,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:07,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 06:55:07,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-16 06:55:07,499 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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) [2023-12-16 06:55:08,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:08,401 INFO L93 Difference]: Finished difference Result 74 states and 101 transitions. [2023-12-16 06:55:08,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 06:55:08,403 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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 47 [2023-12-16 06:55:08,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:08,403 INFO L225 Difference]: With dead ends: 74 [2023-12-16 06:55:08,403 INFO L226 Difference]: Without dead ends: 49 [2023-12-16 06:55:08,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 06:55:08,405 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:08,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 310 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:55:08,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-16 06:55:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-16 06:55:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 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) [2023-12-16 06:55:08,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2023-12-16 06:55:08,410 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 47 [2023-12-16 06:55:08,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:08,411 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2023-12-16 06:55:08,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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) [2023-12-16 06:55:08,411 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2023-12-16 06:55:08,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 06:55:08,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:08,412 INFO L195 NwaCegarLoop]: trace histogram [22, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:08,415 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 (8)] Ended with exit code 0 [2023-12-16 06:55:08,614 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 [2023-12-16 06:55:08,615 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:08,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:08,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1577582191, now seen corresponding path program 2 times [2023-12-16 06:55:08,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:08,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123745464] [2023-12-16 06:55:08,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:55:08,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:08,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:08,617 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) [2023-12-16 06:55:08,641 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 [2023-12-16 06:55:08,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 06:55:08,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:55:08,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 06:55:08,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-16 06:55:09,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:55:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-16 06:55:10,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:10,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123745464] [2023-12-16 06:55:10,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123745464] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:55:10,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:55:10,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 48 [2023-12-16 06:55:10,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590805992] [2023-12-16 06:55:10,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:55:10,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-16 06:55:10,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:10,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-16 06:55:10,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 06:55:10,528 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 48 states have internal predecessors, (70), 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) [2023-12-16 06:55:16,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:16,217 INFO L93 Difference]: Finished difference Result 98 states and 137 transitions. [2023-12-16 06:55:16,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-16 06:55:16,219 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 48 states have internal predecessors, (70), 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 59 [2023-12-16 06:55:16,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:16,219 INFO L225 Difference]: With dead ends: 98 [2023-12-16 06:55:16,219 INFO L226 Difference]: Without dead ends: 73 [2023-12-16 06:55:16,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 06:55:16,221 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:16,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 530 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 06:55:16,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-16 06:55:16,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-12-16 06:55:16,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.1029411764705883) internal successors, (75), 68 states have internal predecessors, (75), 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) [2023-12-16 06:55:16,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2023-12-16 06:55:16,228 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 59 [2023-12-16 06:55:16,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:16,228 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2023-12-16 06:55:16,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 48 states have internal predecessors, (70), 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) [2023-12-16 06:55:16,228 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2023-12-16 06:55:16,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-16 06:55:16,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:16,229 INFO L195 NwaCegarLoop]: trace histogram [46, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:16,233 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 (9)] Ended with exit code 0 [2023-12-16 06:55:16,433 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 [2023-12-16 06:55:16,433 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:16,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:16,433 INFO L85 PathProgramCache]: Analyzing trace with hash 382285457, now seen corresponding path program 3 times [2023-12-16 06:55:16,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:16,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494269531] [2023-12-16 06:55:16,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 06:55:16,434 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 [2023-12-16 06:55:16,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:16,436 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) [2023-12-16 06:55:16,462 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 [2023-12-16 06:55:16,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 06:55:16,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:55:16,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 06:55:16,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1114 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1094 trivial. 0 not checked. [2023-12-16 06:55:16,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:55:16,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:16,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494269531] [2023-12-16 06:55:16,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494269531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:55:16,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:55:16,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:55:16,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745481234] [2023-12-16 06:55:16,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:55:16,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:55:16,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:16,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:55:16,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:55:16,524 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-12-16 06:55:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:16,551 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2023-12-16 06:55:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:55:16,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 83 [2023-12-16 06:55:16,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:16,553 INFO L225 Difference]: With dead ends: 93 [2023-12-16 06:55:16,553 INFO L226 Difference]: Without dead ends: 74 [2023-12-16 06:55:16,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:55:16,554 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:16,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:55:16,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-16 06:55:16,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-12-16 06:55:16,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 69 states have internal predecessors, (76), 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) [2023-12-16 06:55:16,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2023-12-16 06:55:16,563 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 83 [2023-12-16 06:55:16,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:16,564 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2023-12-16 06:55:16,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-12-16 06:55:16,564 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2023-12-16 06:55:16,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-16 06:55:16,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:16,565 INFO L195 NwaCegarLoop]: trace histogram [46, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:16,581 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 [2023-12-16 06:55:16,768 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 [2023-12-16 06:55:16,768 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:16,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:16,769 INFO L85 PathProgramCache]: Analyzing trace with hash -692377186, now seen corresponding path program 1 times [2023-12-16 06:55:16,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:16,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163446725] [2023-12-16 06:55:16,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:55:16,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:16,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:16,770 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) [2023-12-16 06:55:16,800 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 [2023-12-16 06:55:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:55:16,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-16 06:55:16,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 06:55:18,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:55:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 06:55:22,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:22,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163446725] [2023-12-16 06:55:22,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163446725] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:55:22,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:55:22,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 49] total 96 [2023-12-16 06:55:22,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335816024] [2023-12-16 06:55:22,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:55:22,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-16 06:55:22,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-16 06:55:22,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1837, Invalid=7283, Unknown=0, NotChecked=0, Total=9120 [2023-12-16 06:55:22,184 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 96 states, 96 states have (on average 1.2395833333333333) internal successors, (119), 96 states have internal predecessors, (119), 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) [2023-12-16 06:55:26,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:26,597 INFO L93 Difference]: Finished difference Result 114 states and 143 transitions. [2023-12-16 06:55:26,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-16 06:55:26,598 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.2395833333333333) internal successors, (119), 96 states have internal predecessors, (119), 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 84 [2023-12-16 06:55:26,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:26,598 INFO L225 Difference]: With dead ends: 114 [2023-12-16 06:55:26,598 INFO L226 Difference]: Without dead ends: 88 [2023-12-16 06:55:26,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2581, Invalid=8975, Unknown=0, NotChecked=0, Total=11556 [2023-12-16 06:55:26,601 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:26,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1080 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 06:55:26,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-16 06:55:26,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-12-16 06:55:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.0843373493975903) internal successors, (90), 83 states have internal predecessors, (90), 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) [2023-12-16 06:55:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2023-12-16 06:55:26,608 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 84 [2023-12-16 06:55:26,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:26,608 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2023-12-16 06:55:26,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.2395833333333333) internal successors, (119), 96 states have internal predecessors, (119), 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) [2023-12-16 06:55:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2023-12-16 06:55:26,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-16 06:55:26,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:26,609 INFO L195 NwaCegarLoop]: trace histogram [60, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:26,618 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 (11)] Forceful destruction successful, exit code 0 [2023-12-16 06:55:26,813 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 [2023-12-16 06:55:26,813 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:26,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:26,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1309513054, now seen corresponding path program 2 times [2023-12-16 06:55:26,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:26,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594042011] [2023-12-16 06:55:26,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:55:26,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:26,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:26,816 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) [2023-12-16 06:55:26,817 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 [2023-12-16 06:55:26,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 06:55:26,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:55:26,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:55:26,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2023-12-16 06:55:27,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:55:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked. [2023-12-16 06:55:27,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:27,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594042011] [2023-12-16 06:55:27,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594042011] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:55:27,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:55:27,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 06:55:27,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154492813] [2023-12-16 06:55:27,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:55:27,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:55:27,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:27,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:55:27,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:55:27,038 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2023-12-16 06:55:27,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:27,103 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2023-12-16 06:55:27,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:55:27,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 98 [2023-12-16 06:55:27,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:27,105 INFO L225 Difference]: With dead ends: 119 [2023-12-16 06:55:27,105 INFO L226 Difference]: Without dead ends: 95 [2023-12-16 06:55:27,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:55:27,106 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:27,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 74 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:55:27,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-16 06:55:27,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2023-12-16 06:55:27,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.0689655172413792) internal successors, (93), 87 states have internal predecessors, (93), 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) [2023-12-16 06:55:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2023-12-16 06:55:27,114 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 98 [2023-12-16 06:55:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:27,116 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2023-12-16 06:55:27,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2023-12-16 06:55:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2023-12-16 06:55:27,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-16 06:55:27,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:27,118 INFO L195 NwaCegarLoop]: trace histogram [60, 12, 12, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:27,124 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 [2023-12-16 06:55:27,318 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 [2023-12-16 06:55:27,318 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:27,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:27,319 INFO L85 PathProgramCache]: Analyzing trace with hash 999368784, now seen corresponding path program 1 times [2023-12-16 06:55:27,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:27,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95959789] [2023-12-16 06:55:27,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:55:27,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:27,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:27,320 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) [2023-12-16 06:55:27,322 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 [2023-12-16 06:55:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:55:27,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 06:55:27,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 85 proven. 7 refuted. 0 times theorem prover too weak. 1988 trivial. 0 not checked. [2023-12-16 06:55:27,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:55:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 13 proven. 127 refuted. 0 times theorem prover too weak. 1940 trivial. 0 not checked. [2023-12-16 06:55:27,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:27,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95959789] [2023-12-16 06:55:27,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95959789] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:55:27,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:55:27,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 06:55:27,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009449453] [2023-12-16 06:55:27,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:55:27,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:55:27,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:27,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:55:27,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:55:27,888 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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) [2023-12-16 06:55:28,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:28,036 INFO L93 Difference]: Finished difference Result 129 states and 147 transitions. [2023-12-16 06:55:28,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:55:28,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 125 [2023-12-16 06:55:28,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:28,038 INFO L225 Difference]: With dead ends: 129 [2023-12-16 06:55:28,038 INFO L226 Difference]: Without dead ends: 101 [2023-12-16 06:55:28,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-16 06:55:28,041 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:28,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 75 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:55:28,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-16 06:55:28,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-12-16 06:55:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 96 states have internal predecessors, (101), 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) [2023-12-16 06:55:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2023-12-16 06:55:28,062 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 125 [2023-12-16 06:55:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:28,063 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2023-12-16 06:55:28,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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) [2023-12-16 06:55:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2023-12-16 06:55:28,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 06:55:28,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:28,064 INFO L195 NwaCegarLoop]: trace histogram [60, 21, 21, 18, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:28,098 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 (13)] Forceful destruction successful, exit code 0 [2023-12-16 06:55:28,283 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 [2023-12-16 06:55:28,283 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:28,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:28,284 INFO L85 PathProgramCache]: Analyzing trace with hash 718759199, now seen corresponding path program 2 times [2023-12-16 06:55:28,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:28,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565567929] [2023-12-16 06:55:28,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:55:28,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:28,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:28,292 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) [2023-12-16 06:55:28,294 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 [2023-12-16 06:55:28,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 06:55:28,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:55:28,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 06:55:28,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:28,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2539 backedges. 309 proven. 57 refuted. 0 times theorem prover too weak. 2173 trivial. 0 not checked. [2023-12-16 06:55:28,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:55:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2539 backedges. 13 proven. 387 refuted. 0 times theorem prover too weak. 2139 trivial. 0 not checked. [2023-12-16 06:55:29,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:29,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565567929] [2023-12-16 06:55:29,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565567929] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:55:29,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:55:29,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-16 06:55:29,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595230975] [2023-12-16 06:55:29,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:55:29,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 06:55:29,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:29,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 06:55:29,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-12-16 06:55:29,013 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 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) [2023-12-16 06:55:29,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:29,359 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2023-12-16 06:55:29,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 06:55:29,360 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 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 152 [2023-12-16 06:55:29,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:29,361 INFO L225 Difference]: With dead ends: 162 [2023-12-16 06:55:29,361 INFO L226 Difference]: Without dead ends: 125 [2023-12-16 06:55:29,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2023-12-16 06:55:29,361 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:29,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 165 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:55:29,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-16 06:55:29,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-12-16 06:55:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.0416666666666667) internal successors, (125), 120 states have internal predecessors, (125), 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) [2023-12-16 06:55:29,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 131 transitions. [2023-12-16 06:55:29,367 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 131 transitions. Word has length 152 [2023-12-16 06:55:29,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:29,368 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 131 transitions. [2023-12-16 06:55:29,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 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) [2023-12-16 06:55:29,368 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 131 transitions. [2023-12-16 06:55:29,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-16 06:55:29,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:29,369 INFO L195 NwaCegarLoop]: trace histogram [60, 45, 45, 42, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:29,392 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 (14)] Ended with exit code 0 [2023-12-16 06:55:29,585 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 [2023-12-16 06:55:29,586 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:29,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:29,586 INFO L85 PathProgramCache]: Analyzing trace with hash 330181791, now seen corresponding path program 3 times [2023-12-16 06:55:29,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:29,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378845593] [2023-12-16 06:55:29,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 06:55:29,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:29,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:29,588 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) [2023-12-16 06:55:29,589 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 [2023-12-16 06:55:29,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 06:55:29,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:55:30,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:55:30,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4951 backedges. 1420 proven. 1 refuted. 0 times theorem prover too weak. 3530 trivial. 0 not checked. [2023-12-16 06:55:30,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:55:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4951 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4950 trivial. 0 not checked. [2023-12-16 06:55:30,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:30,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378845593] [2023-12-16 06:55:30,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378845593] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:55:30,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:55:30,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 06:55:30,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596801350] [2023-12-16 06:55:30,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:55:30,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:55:30,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:30,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:55:30,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:55:30,047 INFO L87 Difference]: Start difference. First operand 125 states and 131 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2023-12-16 06:55:30,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:30,087 INFO L93 Difference]: Finished difference Result 184 states and 195 transitions. [2023-12-16 06:55:30,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:55:30,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 224 [2023-12-16 06:55:30,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:30,088 INFO L225 Difference]: With dead ends: 184 [2023-12-16 06:55:30,088 INFO L226 Difference]: Without dead ends: 128 [2023-12-16 06:55:30,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:55:30,089 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:30,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:55:30,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-16 06:55:30,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-12-16 06:55:30,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 123 states have internal predecessors, (128), 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) [2023-12-16 06:55:30,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 134 transitions. [2023-12-16 06:55:30,094 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 134 transitions. Word has length 224 [2023-12-16 06:55:30,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:30,095 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 134 transitions. [2023-12-16 06:55:30,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2023-12-16 06:55:30,095 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 134 transitions. [2023-12-16 06:55:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-16 06:55:30,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:30,096 INFO L195 NwaCegarLoop]: trace histogram [60, 45, 45, 42, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:30,106 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 [2023-12-16 06:55:30,306 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 [2023-12-16 06:55:30,306 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:30,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:30,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1736259762, now seen corresponding path program 4 times [2023-12-16 06:55:30,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:30,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336377798] [2023-12-16 06:55:30,307 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 06:55:30,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:30,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:30,309 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) [2023-12-16 06:55:30,310 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 (16)] Waiting until timeout for monitored process [2023-12-16 06:55:30,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 06:55:30,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:55:30,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 06:55:30,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 1381 proven. 301 refuted. 0 times theorem prover too weak. 3278 trivial. 0 not checked. [2023-12-16 06:55:31,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:55:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 29 proven. 1719 refuted. 0 times theorem prover too weak. 3212 trivial. 0 not checked. [2023-12-16 06:55:31,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:31,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336377798] [2023-12-16 06:55:31,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336377798] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:55:31,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:55:31,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-12-16 06:55:31,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737308059] [2023-12-16 06:55:31,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:55:31,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-16 06:55:31,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:31,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-16 06:55:31,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2023-12-16 06:55:31,833 INFO L87 Difference]: Start difference. First operand 128 states and 134 transitions. Second operand has 32 states, 32 states have (on average 3.6875) internal successors, (118), 32 states have internal predecessors, (118), 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) [2023-12-16 06:55:33,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:33,657 INFO L93 Difference]: Finished difference Result 240 states and 269 transitions. [2023-12-16 06:55:33,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-16 06:55:33,660 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.6875) internal successors, (118), 32 states have internal predecessors, (118), 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 227 [2023-12-16 06:55:33,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:33,661 INFO L225 Difference]: With dead ends: 240 [2023-12-16 06:55:33,661 INFO L226 Difference]: Without dead ends: 176 [2023-12-16 06:55:33,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2023-12-16 06:55:33,662 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:33,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 345 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 06:55:33,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-16 06:55:33,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-12-16 06:55:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 171 states have (on average 1.0292397660818713) internal successors, (176), 171 states have internal predecessors, (176), 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) [2023-12-16 06:55:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 182 transitions. [2023-12-16 06:55:33,669 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 182 transitions. Word has length 227 [2023-12-16 06:55:33,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:33,669 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 182 transitions. [2023-12-16 06:55:33,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.6875) internal successors, (118), 32 states have internal predecessors, (118), 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) [2023-12-16 06:55:33,669 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 182 transitions. [2023-12-16 06:55:33,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-12-16 06:55:33,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:33,671 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 90, 60, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:33,706 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 [2023-12-16 06:55:33,888 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 [2023-12-16 06:55:33,888 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:33,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:33,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2143227982, now seen corresponding path program 5 times [2023-12-16 06:55:33,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:33,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444899961] [2023-12-16 06:55:33,889 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 06:55:33,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:33,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:33,890 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) [2023-12-16 06:55:33,893 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 [2023-12-16 06:55:34,151 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-12-16 06:55:34,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:55:34,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:55:34,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 14968 backedges. 6042 proven. 2 refuted. 0 times theorem prover too weak. 8924 trivial. 0 not checked. [2023-12-16 06:55:34,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:55:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14968 backedges. 148 proven. 322 refuted. 0 times theorem prover too weak. 14498 trivial. 0 not checked. [2023-12-16 06:55:34,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:34,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444899961] [2023-12-16 06:55:34,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444899961] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:55:34,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:55:34,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-16 06:55:34,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526448191] [2023-12-16 06:55:34,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:55:34,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 06:55:34,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:34,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 06:55:34,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-16 06:55:34,332 INFO L87 Difference]: Start difference. First operand 176 states and 182 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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) [2023-12-16 06:55:34,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:34,531 INFO L93 Difference]: Finished difference Result 301 states and 322 transitions. [2023-12-16 06:55:34,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 06:55:34,532 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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 371 [2023-12-16 06:55:34,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:34,533 INFO L225 Difference]: With dead ends: 301 [2023-12-16 06:55:34,533 INFO L226 Difference]: Without dead ends: 189 [2023-12-16 06:55:34,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 733 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2023-12-16 06:55:34,534 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:34,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 104 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:55:34,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-16 06:55:34,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2023-12-16 06:55:34,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 1.0437158469945356) internal successors, (191), 183 states have internal predecessors, (191), 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) [2023-12-16 06:55:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 197 transitions. [2023-12-16 06:55:34,543 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 197 transitions. Word has length 371 [2023-12-16 06:55:34,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:34,543 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 197 transitions. [2023-12-16 06:55:34,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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) [2023-12-16 06:55:34,544 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 197 transitions. [2023-12-16 06:55:34,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-16 06:55:34,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:34,545 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 90, 60, 15, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:34,552 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 [2023-12-16 06:55:34,752 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 [2023-12-16 06:55:34,752 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:34,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash 424847118, now seen corresponding path program 6 times [2023-12-16 06:55:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:34,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665838198] [2023-12-16 06:55:34,753 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 06:55:34,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:34,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:34,769 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) [2023-12-16 06:55:34,803 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 [2023-12-16 06:55:35,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-16 06:55:35,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:55:35,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:55:35,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 18550 backedges. 7500 proven. 10 refuted. 0 times theorem prover too weak. 11040 trivial. 0 not checked. [2023-12-16 06:55:35,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:55:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 18550 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18540 trivial. 0 not checked. [2023-12-16 06:55:35,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:35,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665838198] [2023-12-16 06:55:35,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665838198] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:55:35,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:55:35,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 06:55:35,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203840810] [2023-12-16 06:55:35,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:55:35,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 06:55:35,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:35,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 06:55:35,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 06:55:35,564 INFO L87 Difference]: Start difference. First operand 188 states and 197 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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) [2023-12-16 06:55:35,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:35,726 INFO L93 Difference]: Finished difference Result 310 states and 330 transitions. [2023-12-16 06:55:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 06:55:35,727 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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 407 [2023-12-16 06:55:35,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:35,728 INFO L225 Difference]: With dead ends: 310 [2023-12-16 06:55:35,729 INFO L226 Difference]: Without dead ends: 194 [2023-12-16 06:55:35,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-16 06:55:35,729 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:35,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:55:35,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-16 06:55:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-12-16 06:55:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.0423280423280423) internal successors, (197), 189 states have internal predecessors, (197), 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) [2023-12-16 06:55:35,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 203 transitions. [2023-12-16 06:55:35,739 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 203 transitions. Word has length 407 [2023-12-16 06:55:35,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:35,739 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 203 transitions. [2023-12-16 06:55:35,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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) [2023-12-16 06:55:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 203 transitions. [2023-12-16 06:55:35,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-16 06:55:35,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:35,741 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 90, 60, 15, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:35,752 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 (18)] Ended with exit code 0 [2023-12-16 06:55:35,952 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 [2023-12-16 06:55:35,952 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:35,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:35,953 INFO L85 PathProgramCache]: Analyzing trace with hash 676693358, now seen corresponding path program 7 times [2023-12-16 06:55:35,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:35,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705467516] [2023-12-16 06:55:35,953 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 06:55:35,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:35,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:35,968 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) [2023-12-16 06:55:35,969 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 [2023-12-16 06:55:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:55:36,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-16 06:55:36,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18595 backedges. 6933 proven. 1365 refuted. 0 times theorem prover too weak. 10297 trivial. 0 not checked. [2023-12-16 06:55:37,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:55:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 18595 backedges. 429 proven. 8863 refuted. 0 times theorem prover too weak. 9303 trivial. 0 not checked. [2023-12-16 06:55:38,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:38,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705467516] [2023-12-16 06:55:38,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705467516] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:55:38,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:55:38,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2023-12-16 06:55:38,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130572243] [2023-12-16 06:55:38,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:55:38,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-16 06:55:38,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:38,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-16 06:55:38,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=3411, Unknown=0, NotChecked=0, Total=4032 [2023-12-16 06:55:38,934 INFO L87 Difference]: Start difference. First operand 194 states and 203 transitions. Second operand has 64 states, 64 states have (on average 3.34375) internal successors, (214), 64 states have internal predecessors, (214), 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) [2023-12-16 06:55:40,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:40,180 INFO L93 Difference]: Finished difference Result 328 states and 348 transitions. [2023-12-16 06:55:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-16 06:55:40,181 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.34375) internal successors, (214), 64 states have internal predecessors, (214), 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 413 [2023-12-16 06:55:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:40,182 INFO L225 Difference]: With dead ends: 328 [2023-12-16 06:55:40,182 INFO L226 Difference]: Without dead ends: 198 [2023-12-16 06:55:40,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=621, Invalid=3411, Unknown=0, NotChecked=0, Total=4032 [2023-12-16 06:55:40,183 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 3259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 3260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:40,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 615 Invalid, 3260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3259 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 06:55:40,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-12-16 06:55:40,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2023-12-16 06:55:40,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 192 states have (on average 1.0416666666666667) internal successors, (200), 192 states have internal predecessors, (200), 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) [2023-12-16 06:55:40,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 206 transitions. [2023-12-16 06:55:40,192 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 206 transitions. Word has length 413 [2023-12-16 06:55:40,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:40,192 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 206 transitions. [2023-12-16 06:55:40,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.34375) internal successors, (214), 64 states have internal predecessors, (214), 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) [2023-12-16 06:55:40,192 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 206 transitions. [2023-12-16 06:55:40,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-12-16 06:55:40,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:40,194 INFO L195 NwaCegarLoop]: trace histogram [108, 108, 93, 60, 15, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:40,214 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 [2023-12-16 06:55:40,412 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 [2023-12-16 06:55:40,413 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:40,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:40,413 INFO L85 PathProgramCache]: Analyzing trace with hash 327239495, now seen corresponding path program 8 times [2023-12-16 06:55:40,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:40,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287331618] [2023-12-16 06:55:40,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:55:40,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:40,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:40,415 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) [2023-12-16 06:55:40,450 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 [2023-12-16 06:55:41,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 06:55:41,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:55:41,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-16 06:55:41,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 19558 backedges. 7924 proven. 1926 refuted. 0 times theorem prover too weak. 9708 trivial. 0 not checked. [2023-12-16 06:55:42,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:55:44,587 INFO L134 CoverageAnalysis]: Checked inductivity of 19558 backedges. 0 proven. 9854 refuted. 0 times theorem prover too weak. 9704 trivial. 0 not checked. [2023-12-16 06:55:44,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:44,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287331618] [2023-12-16 06:55:44,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287331618] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:55:44,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:55:44,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 76 [2023-12-16 06:55:44,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456251645] [2023-12-16 06:55:44,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:55:44,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-12-16 06:55:44,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:44,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-12-16 06:55:44,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1427, Invalid=4273, Unknown=0, NotChecked=0, Total=5700 [2023-12-16 06:55:44,605 INFO L87 Difference]: Start difference. First operand 197 states and 206 transitions. Second operand has 76 states, 76 states have (on average 3.263157894736842) internal successors, (248), 76 states have internal predecessors, (248), 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) [2023-12-16 06:55:54,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:54,368 INFO L93 Difference]: Finished difference Result 405 states and 473 transitions. [2023-12-16 06:55:54,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-16 06:55:54,369 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.263157894736842) internal successors, (248), 76 states have internal predecessors, (248), 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 422 [2023-12-16 06:55:54,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:54,370 INFO L225 Difference]: With dead ends: 405 [2023-12-16 06:55:54,370 INFO L226 Difference]: Without dead ends: 272 [2023-12-16 06:55:54,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=2962, Invalid=6938, Unknown=0, NotChecked=0, Total=9900 [2023-12-16 06:55:54,373 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 332 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 3576 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 3997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 3576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:54,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 704 Invalid, 3997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 3576 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 06:55:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-16 06:55:54,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2023-12-16 06:55:54,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 267 states have (on average 1.104868913857678) internal successors, (295), 267 states have internal predecessors, (295), 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) [2023-12-16 06:55:54,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 301 transitions. [2023-12-16 06:55:54,382 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 301 transitions. Word has length 422 [2023-12-16 06:55:54,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:54,383 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 301 transitions. [2023-12-16 06:55:54,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.263157894736842) internal successors, (248), 76 states have internal predecessors, (248), 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) [2023-12-16 06:55:54,383 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 301 transitions. [2023-12-16 06:55:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2023-12-16 06:55:54,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:54,386 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 93, 87, 60, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:54,411 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 [2023-12-16 06:55:54,598 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 [2023-12-16 06:55:54,599 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:54,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:54,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1166723783, now seen corresponding path program 9 times [2023-12-16 06:55:54,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:54,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329596055] [2023-12-16 06:55:54,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 06:55:54,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:54,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:54,601 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) [2023-12-16 06:55:54,602 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 [2023-12-16 06:55:55,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-16 06:55:55,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:55:55,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 06:55:55,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 50770 backedges. 21850 proven. 55 refuted. 0 times theorem prover too weak. 28865 trivial. 0 not checked. [2023-12-16 06:55:55,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:55:56,079 INFO L134 CoverageAnalysis]: Checked inductivity of 50770 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 50715 trivial. 0 not checked. [2023-12-16 06:55:56,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:55:56,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329596055] [2023-12-16 06:55:56,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329596055] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:55:56,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:55:56,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-16 06:55:56,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247035273] [2023-12-16 06:55:56,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:55:56,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 06:55:56,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:55:56,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 06:55:56,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-16 06:55:56,081 INFO L87 Difference]: Start difference. First operand 272 states and 301 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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) [2023-12-16 06:55:56,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:55:56,896 INFO L93 Difference]: Finished difference Result 478 states and 544 transitions. [2023-12-16 06:55:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 06:55:56,897 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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 638 [2023-12-16 06:55:56,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:55:56,898 INFO L225 Difference]: With dead ends: 478 [2023-12-16 06:55:56,898 INFO L226 Difference]: Without dead ends: 284 [2023-12-16 06:55:56,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1252 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 06:55:56,899 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:55:56,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 276 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:55:56,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-16 06:55:56,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2023-12-16 06:55:56,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 279 states have (on average 1.1003584229390682) internal successors, (307), 279 states have internal predecessors, (307), 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) [2023-12-16 06:55:56,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 313 transitions. [2023-12-16 06:55:56,910 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 313 transitions. Word has length 638 [2023-12-16 06:55:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:55:56,911 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 313 transitions. [2023-12-16 06:55:56,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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) [2023-12-16 06:55:56,911 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 313 transitions. [2023-12-16 06:55:56,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2023-12-16 06:55:56,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:55:56,914 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 93, 87, 60, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:55:56,938 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 [2023-12-16 06:55:57,128 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 [2023-12-16 06:55:57,128 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:55:57,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:55:57,129 INFO L85 PathProgramCache]: Analyzing trace with hash -15278073, now seen corresponding path program 10 times [2023-12-16 06:55:57,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:55:57,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500497028] [2023-12-16 06:55:57,129 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 06:55:57,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:55:57,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:55:57,131 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) [2023-12-16 06:55:57,132 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 [2023-12-16 06:56:01,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 06:56:01,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:56:01,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 06:56:01,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:56:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 50968 backedges. 21850 proven. 253 refuted. 0 times theorem prover too weak. 28865 trivial. 0 not checked. [2023-12-16 06:56:01,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:56:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 50968 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 50715 trivial. 0 not checked. [2023-12-16 06:56:03,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:56:03,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500497028] [2023-12-16 06:56:03,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500497028] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:56:03,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:56:03,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-12-16 06:56:03,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383914300] [2023-12-16 06:56:03,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:56:03,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-16 06:56:03,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:56:03,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-16 06:56:03,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 06:56:03,132 INFO L87 Difference]: Start difference. First operand 284 states and 313 transitions. Second operand has 48 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 48 states have internal predecessors, (73), 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) [2023-12-16 06:56:08,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:56:08,441 INFO L93 Difference]: Finished difference Result 502 states and 580 transitions. [2023-12-16 06:56:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-16 06:56:08,443 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 48 states have internal predecessors, (73), 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 650 [2023-12-16 06:56:08,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:56:08,445 INFO L225 Difference]: With dead ends: 502 [2023-12-16 06:56:08,445 INFO L226 Difference]: Without dead ends: 308 [2023-12-16 06:56:08,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1320 GetRequests, 1252 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 06:56:08,447 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 06:56:08,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 507 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 06:56:08,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-12-16 06:56:08,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2023-12-16 06:56:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 303 states have (on average 1.0924092409240924) internal successors, (331), 303 states have internal predecessors, (331), 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) [2023-12-16 06:56:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 337 transitions. [2023-12-16 06:56:08,457 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 337 transitions. Word has length 650 [2023-12-16 06:56:08,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:56:08,458 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 337 transitions. [2023-12-16 06:56:08,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 48 states have internal predecessors, (73), 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) [2023-12-16 06:56:08,458 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 337 transitions. [2023-12-16 06:56:08,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2023-12-16 06:56:08,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:56:08,462 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 93, 87, 60, 46, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:56:08,509 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 (22)] Ended with exit code 0 [2023-12-16 06:56:08,676 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 [2023-12-16 06:56:08,676 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:56:08,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:56:08,677 INFO L85 PathProgramCache]: Analyzing trace with hash -19043705, now seen corresponding path program 11 times [2023-12-16 06:56:08,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:56:08,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262853356] [2023-12-16 06:56:08,678 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 06:56:08,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:56:08,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:56:08,679 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) [2023-12-16 06:56:08,680 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 Received shutdown request... [2023-12-16 06:56:16,328 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:56:16,343 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 [2023-12-16 06:56:17,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-16 06:56:17,554 WARN L435 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)] Forcibly destroying the process [2023-12-16 06:56:17,566 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-16 06:56:17,568 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:56:17,568 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 [2023-12-16 06:56:17,568 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 675 with TraceHistMax 180,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1262853356] and IpTcStrategyModuleCvc4 [431390915]. [2023-12-16 06:56:17,571 INFO L445 BasicCegarLoop]: Path program histogram: [11, 3, 2, 2, 2, 1, 1] [2023-12-16 06:56:17,572 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 137 [2023-12-16 06:56:17,574 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:56:17,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:56:17 BoogieIcfgContainer [2023-12-16 06:56:17,577 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:56:17,580 INFO L158 Benchmark]: Toolchain (without parser) took 75603.31ms. Allocated memory was 280.0MB in the beginning and 336.6MB in the end (delta: 56.6MB). Free memory was 231.6MB in the beginning and 164.2MB in the end (delta: 67.4MB). Peak memory consumption was 125.3MB. Max. memory is 8.0GB. [2023-12-16 06:56:17,580 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 189.8MB. Free memory is still 142.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:56:17,581 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.43ms. Allocated memory is still 280.0MB. Free memory was 231.6MB in the beginning and 219.8MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 06:56:17,581 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.39ms. Allocated memory is still 280.0MB. Free memory was 219.8MB in the beginning and 218.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 06:56:17,581 INFO L158 Benchmark]: Boogie Preprocessor took 30.18ms. Allocated memory is still 280.0MB. Free memory was 217.9MB in the beginning and 215.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 06:56:17,581 INFO L158 Benchmark]: RCFGBuilder took 678.92ms. Allocated memory is still 280.0MB. Free memory was 215.8MB in the beginning and 200.5MB in the end (delta: 15.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 06:56:17,582 INFO L158 Benchmark]: TraceAbstraction took 74655.43ms. Allocated memory was 280.0MB in the beginning and 336.6MB in the end (delta: 56.6MB). Free memory was 199.8MB in the beginning and 164.2MB in the end (delta: 35.7MB). Peak memory consumption was 93.8MB. Max. memory is 8.0GB. [2023-12-16 06:56:17,584 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 189.8MB. Free memory is still 142.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.43ms. Allocated memory is still 280.0MB. Free memory was 231.6MB in the beginning and 219.8MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.39ms. Allocated memory is still 280.0MB. Free memory was 219.8MB in the beginning and 218.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.18ms. Allocated memory is still 280.0MB. Free memory was 217.9MB in the beginning and 215.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 678.92ms. Allocated memory is still 280.0MB. Free memory was 215.8MB in the beginning and 200.5MB in the end (delta: 15.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 74655.43ms. Allocated memory was 280.0MB in the beginning and 336.6MB in the end (delta: 56.6MB). Free memory was 199.8MB in the beginning and 164.2MB in the end (delta: 35.7MB). Peak memory consumption was 93.8MB. 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: 61]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 61). Cancelled while NwaCegarLoop was analyzing trace of length 675 with TraceHistMax 180,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1262853356] and IpTcStrategyModuleCvc4 [431390915]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.6s, OverallIterations: 22, TraceHistogramMax: 180, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 31.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 399 SdHoareTripleChecker+Valid, 7.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 399 mSDsluCounter, 5400 SdHoareTripleChecker+Invalid, 6.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4924 mSDsCounter, 451 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12016 IncrementalHoareTripleChecker+Invalid, 12467 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 451 mSolverCounterUnsat, 476 mSDtfsCounter, 12016 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8294 GetRequests, 7697 SyntacticMatches, 0 SemanticMatches, 597 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2922 ImplicationChecksByTransitivity, 37.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=308occurred in iteration=21, InterpolantAutomatonStates: 427, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 8 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 9.5s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 4205 NumberOfCodeBlocks, 2674 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 8155 ConstructedInterpolants, 0 QuantifiedInterpolants, 10796 SizeOfPredicates, 2 NumberOfNonLiveVariables, 6339 ConjunctsInSsa, 254 ConjunctsInUnsatCore, 37 InterpolantComputations, 5 PerfectInterpolantSequences, 355571/383959 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