/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-multidimensional/copy-partial-2-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 19:02:37,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 19:02:37,107 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 19:02:37,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 19:02:37,112 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 19:02:37,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 19:02:37,129 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 19:02:37,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 19:02:37,130 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 19:02:37,131 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 19:02:37,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 19:02:37,131 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 19:02:37,132 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 19:02:37,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 19:02:37,133 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 19:02:37,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 19:02:37,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 19:02:37,134 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 19:02:37,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 19:02:37,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 19:02:37,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 19:02:37,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 19:02:37,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 19:02:37,135 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 19:02:37,136 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 19:02:37,136 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 19:02:37,136 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 19:02:37,136 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 19:02:37,137 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 19:02:37,137 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 19:02:37,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 19:02:37,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 19:02:37,138 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 19:02:37,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 19:02:37,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 19:02:37,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 19:02:37,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 19:02:37,139 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 19:02:37,139 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 19:02:37,139 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 19:02:37,140 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 19:02:37,140 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 19:02:37,140 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 19:02:37,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 19:02:37,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 19:02:37,141 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 19:02:37,141 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 19:02:37,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 19:02:37,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 19:02:37,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 19:02:37,386 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 19:02:37,386 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 19:02:37,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/copy-partial-2-n-u.c [2023-12-21 19:02:38,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 19:02:38,657 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 19:02:38,658 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/copy-partial-2-n-u.c [2023-12-21 19:02:38,668 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc0c02406/33cb0a165cb046aeaf1e69cee80deb26/FLAGc4ab5f51f [2023-12-21 19:02:38,682 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc0c02406/33cb0a165cb046aeaf1e69cee80deb26 [2023-12-21 19:02:38,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 19:02:38,686 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 19:02:38,689 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 19:02:38,689 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 19:02:38,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 19:02:38,693 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 07:02:38" (1/1) ... [2023-12-21 19:02:38,694 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@298a3d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:02:38, skipping insertion in model container [2023-12-21 19:02:38,694 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 07:02:38" (1/1) ... [2023-12-21 19:02:38,715 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 19:02:38,847 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/copy-partial-2-n-u.c[416,429] [2023-12-21 19:02:38,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 19:02:38,875 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 19:02:38,883 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/copy-partial-2-n-u.c[416,429] [2023-12-21 19:02:38,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 19:02:38,903 INFO L206 MainTranslator]: Completed translation [2023-12-21 19:02:38,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:02:38 WrapperNode [2023-12-21 19:02:38,903 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 19:02:38,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 19:02:38,904 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 19:02:38,904 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 19:02:38,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:02:38" (1/1) ... [2023-12-21 19:02:38,916 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:02:38" (1/1) ... [2023-12-21 19:02:38,933 INFO L138 Inliner]: procedures = 17, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2023-12-21 19:02:38,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 19:02:38,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 19:02:38,935 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 19:02:38,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 19:02:38,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:02:38" (1/1) ... [2023-12-21 19:02:38,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:02:38" (1/1) ... [2023-12-21 19:02:38,949 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:02:38" (1/1) ... [2023-12-21 19:02:38,961 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 3, 2]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-12-21 19:02:38,961 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:02:38" (1/1) ... [2023-12-21 19:02:38,961 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:02:38" (1/1) ... [2023-12-21 19:02:38,966 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:02:38" (1/1) ... [2023-12-21 19:02:38,968 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:02:38" (1/1) ... [2023-12-21 19:02:38,969 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:02:38" (1/1) ... [2023-12-21 19:02:38,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:02:38" (1/1) ... [2023-12-21 19:02:38,972 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 19:02:38,984 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 19:02:38,984 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 19:02:38,984 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 19:02:38,985 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:02:38" (1/1) ... [2023-12-21 19:02:38,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 19:02:39,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 19:02:39,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 19:02:39,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 19:02:39,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 19:02:39,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 19:02:39,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 19:02:39,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 19:02:39,054 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 19:02:39,055 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 19:02:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 19:02:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 19:02:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 19:02:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 19:02:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 19:02:39,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 19:02:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 19:02:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 19:02:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 19:02:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 19:02:39,153 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 19:02:39,156 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 19:02:39,406 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 19:02:39,435 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 19:02:39,435 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-21 19:02:39,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 07:02:39 BoogieIcfgContainer [2023-12-21 19:02:39,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 19:02:39,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 19:02:39,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 19:02:39,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 19:02:39,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 07:02:38" (1/3) ... [2023-12-21 19:02:39,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3081e97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 07:02:39, skipping insertion in model container [2023-12-21 19:02:39,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:02:38" (2/3) ... [2023-12-21 19:02:39,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3081e97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 07:02:39, skipping insertion in model container [2023-12-21 19:02:39,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 07:02:39" (3/3) ... [2023-12-21 19:02:39,447 INFO L112 eAbstractionObserver]: Analyzing ICFG copy-partial-2-n-u.c [2023-12-21 19:02:39,461 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 19:02:39,461 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 19:02:39,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 19:02:39,501 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;@6eeabee7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 19:02:39,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 19:02:39,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.75) internal successors, (35), 21 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:02:39,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 19:02:39,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:02:39,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:02:39,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:02:39,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:02:39,519 INFO L85 PathProgramCache]: Analyzing trace with hash -863536884, now seen corresponding path program 1 times [2023-12-21 19:02:39,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:02:39,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50481317] [2023-12-21 19:02:39,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:02:39,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:39,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:02:39,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:02:39,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 19:02:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:02:39,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 19:02:39,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:02:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 19:02:39,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:02:39,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:02:39,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50481317] [2023-12-21 19:02:39,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50481317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:02:39,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:02:39,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 19:02:39,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181093389] [2023-12-21 19:02:39,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:02:39,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 19:02:39,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:02:39,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 19:02:39,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 19:02:39,686 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.75) internal successors, (35), 21 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:02:39,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:02:39,714 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2023-12-21 19:02:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 19:02:39,716 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-12-21 19:02:39,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:02:39,722 INFO L225 Difference]: With dead ends: 48 [2023-12-21 19:02:39,722 INFO L226 Difference]: Without dead ends: 23 [2023-12-21 19:02:39,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 19:02:39,729 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 19:02:39,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 19:02:39,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-21 19:02:39,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-21 19:02:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:02:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2023-12-21 19:02:39,765 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 20 [2023-12-21 19:02:39,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:02:39,766 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2023-12-21 19:02:39,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:02:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-12-21 19:02:39,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 19:02:39,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:02:39,767 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:02:39,773 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 (2)] Forceful destruction successful, exit code 0 [2023-12-21 19:02:39,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:39,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:02:39,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:02:39,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2101247948, now seen corresponding path program 1 times [2023-12-21 19:02:39,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:02:39,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315997183] [2023-12-21 19:02:39,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:02:39,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:39,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:02:39,976 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:02:40,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 19:02:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:02:40,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 19:02:40,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:02:40,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 19:02:40,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:02:40,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:02:40,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315997183] [2023-12-21 19:02:40,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315997183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:02:40,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:02:40,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 19:02:40,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314845220] [2023-12-21 19:02:40,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:02:40,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 19:02:40,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:02:40,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 19:02:40,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:02:40,137 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 19:02:40,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:02:40,333 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2023-12-21 19:02:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 19:02:40,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-12-21 19:02:40,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:02:40,336 INFO L225 Difference]: With dead ends: 49 [2023-12-21 19:02:40,336 INFO L226 Difference]: Without dead ends: 37 [2023-12-21 19:02:40,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:02:40,337 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 52 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 19:02:40,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 29 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 19:02:40,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-21 19:02:40,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2023-12-21 19:02:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:02:40,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-12-21 19:02:40,344 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 20 [2023-12-21 19:02:40,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:02:40,345 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-12-21 19:02:40,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 19:02:40,345 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-12-21 19:02:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 19:02:40,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:02:40,346 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:02:40,349 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 [2023-12-21 19:02:40,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:40,547 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:02:40,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:02:40,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1303690610, now seen corresponding path program 1 times [2023-12-21 19:02:40,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:02:40,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281842610] [2023-12-21 19:02:40,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:02:40,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:40,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:02:40,550 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:02:40,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 19:02:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:02:40,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 19:02:40,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:02:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 19:02:40,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:02:40,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:02:40,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281842610] [2023-12-21 19:02:40,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281842610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:02:40,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:02:40,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 19:02:40,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597767105] [2023-12-21 19:02:40,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:02:40,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 19:02:40,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:02:40,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 19:02:40,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:02:40,666 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 19:02:40,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:02:40,765 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2023-12-21 19:02:40,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 19:02:40,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-12-21 19:02:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:02:40,766 INFO L225 Difference]: With dead ends: 51 [2023-12-21 19:02:40,766 INFO L226 Difference]: Without dead ends: 36 [2023-12-21 19:02:40,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:02:40,768 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 27 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 19:02:40,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 39 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 19:02:40,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-21 19:02:40,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 25. [2023-12-21 19:02:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:02:40,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-12-21 19:02:40,776 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 23 [2023-12-21 19:02:40,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:02:40,777 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-12-21 19:02:40,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 19:02:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-12-21 19:02:40,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 19:02:40,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:02:40,779 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:02:40,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 19:02:40,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:40,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:02:40,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:02:40,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1074082683, now seen corresponding path program 1 times [2023-12-21 19:02:40,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:02:40,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876131378] [2023-12-21 19:02:40,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:02:40,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:40,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:02:40,990 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:02:40,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 19:02:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:02:41,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 19:02:41,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:02:41,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 19:02:41,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:02:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 19:02:41,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:02:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876131378] [2023-12-21 19:02:41,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876131378] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:02:41,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:02:41,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-21 19:02:41,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078296962] [2023-12-21 19:02:41,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:02:41,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 19:02:41,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:02:41,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 19:02:41,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 19:02:41,151 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:02:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:02:41,449 INFO L93 Difference]: Finished difference Result 88 states and 114 transitions. [2023-12-21 19:02:41,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 19:02:41,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2023-12-21 19:02:41,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:02:41,451 INFO L225 Difference]: With dead ends: 88 [2023-12-21 19:02:41,451 INFO L226 Difference]: Without dead ends: 72 [2023-12-21 19:02:41,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-21 19:02:41,452 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 217 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 19:02:41,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 73 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 19:02:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-21 19:02:41,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 28. [2023-12-21 19:02:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:02:41,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2023-12-21 19:02:41,462 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 24 [2023-12-21 19:02:41,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:02:41,463 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2023-12-21 19:02:41,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:02:41,463 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2023-12-21 19:02:41,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 19:02:41,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:02:41,464 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:02:41,468 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 (5)] Ended with exit code 0 [2023-12-21 19:02:41,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:41,664 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:02:41,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:02:41,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1725532238, now seen corresponding path program 2 times [2023-12-21 19:02:41,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:02:41,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646819394] [2023-12-21 19:02:41,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 19:02:41,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:41,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:02:41,667 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:02:41,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 19:02:41,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 19:02:41,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:02:41,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 19:02:41,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:02:41,762 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 19:02:41,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:02:41,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:02:41,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646819394] [2023-12-21 19:02:41,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646819394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:02:41,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:02:41,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 19:02:41,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449230537] [2023-12-21 19:02:41,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:02:41,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 19:02:41,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:02:41,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 19:02:41,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:02:41,765 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 19:02:41,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:02:41,911 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2023-12-21 19:02:41,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 19:02:41,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2023-12-21 19:02:41,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:02:41,915 INFO L225 Difference]: With dead ends: 52 [2023-12-21 19:02:41,915 INFO L226 Difference]: Without dead ends: 44 [2023-12-21 19:02:41,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:02:41,916 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 19:02:41,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 30 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 19:02:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-21 19:02:41,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 29. [2023-12-21 19:02:41,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:02:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-12-21 19:02:41,926 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 27 [2023-12-21 19:02:41,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:02:41,926 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-12-21 19:02:41,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 19:02:41,927 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-12-21 19:02:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 19:02:41,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:02:41,927 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:02:41,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 19:02:42,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:42,131 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:02:42,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:02:42,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1832834720, now seen corresponding path program 1 times [2023-12-21 19:02:42,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:02:42,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113383928] [2023-12-21 19:02:42,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:02:42,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:42,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:02:42,133 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:02:42,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 19:02:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:02:42,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 19:02:42,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:02:42,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 19:02:42,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:02:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 19:02:42,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:02:42,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113383928] [2023-12-21 19:02:42,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113383928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:02:42,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:02:42,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-21 19:02:42,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280877534] [2023-12-21 19:02:42,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:02:42,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 19:02:42,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:02:42,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 19:02:42,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-12-21 19:02:42,497 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:02:43,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:02:43,405 INFO L93 Difference]: Finished difference Result 165 states and 212 transitions. [2023-12-21 19:02:43,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 19:02:43,405 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2023-12-21 19:02:43,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:02:43,406 INFO L225 Difference]: With dead ends: 165 [2023-12-21 19:02:43,407 INFO L226 Difference]: Without dead ends: 145 [2023-12-21 19:02:43,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2023-12-21 19:02:43,408 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 547 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 19:02:43,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 254 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 19:02:43,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-21 19:02:43,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 35. [2023-12-21 19:02:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:02:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2023-12-21 19:02:43,423 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 30 [2023-12-21 19:02:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:02:43,423 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2023-12-21 19:02:43,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:02:43,424 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2023-12-21 19:02:43,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 19:02:43,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:02:43,425 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:02:43,432 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 (7)] Ended with exit code 0 [2023-12-21 19:02:43,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:43,632 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:02:43,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:02:43,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2002362560, now seen corresponding path program 2 times [2023-12-21 19:02:43,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:02:43,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655230093] [2023-12-21 19:02:43,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 19:02:43,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:02:43,634 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:02:43,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 19:02:43,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 19:02:43,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:02:43,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 19:02:43,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:02:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 19:02:43,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:02:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 19:02:44,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:02:44,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655230093] [2023-12-21 19:02:44,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655230093] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:02:44,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:02:44,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-21 19:02:44,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800843093] [2023-12-21 19:02:44,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:02:44,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 19:02:44,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:02:44,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 19:02:44,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-12-21 19:02:44,502 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:02:47,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:02:47,551 INFO L93 Difference]: Finished difference Result 315 states and 404 transitions. [2023-12-21 19:02:47,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 19:02:47,552 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2023-12-21 19:02:47,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:02:47,553 INFO L225 Difference]: With dead ends: 315 [2023-12-21 19:02:47,553 INFO L226 Difference]: Without dead ends: 289 [2023-12-21 19:02:47,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=479, Invalid=853, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 19:02:47,555 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 1515 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 19:02:47,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 919 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 19:02:47,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-21 19:02:47,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 47. [2023-12-21 19:02:47,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:02:47,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2023-12-21 19:02:47,571 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 36 [2023-12-21 19:02:47,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:02:47,571 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2023-12-21 19:02:47,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:02:47,571 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2023-12-21 19:02:47,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 19:02:47,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:02:47,572 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:02:47,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 19:02:47,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:47,778 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:02:47,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:02:47,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2140370816, now seen corresponding path program 3 times [2023-12-21 19:02:47,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:02:47,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346276663] [2023-12-21 19:02:47,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 19:02:47,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:47,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:02:47,780 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:02:47,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 19:02:47,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 19:02:47,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:02:47,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 19:02:47,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:02:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-12-21 19:02:48,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:02:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-12-21 19:02:48,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:02:48,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346276663] [2023-12-21 19:02:48,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346276663] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:02:48,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:02:48,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-21 19:02:48,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278970526] [2023-12-21 19:02:48,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:02:48,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 19:02:48,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:02:48,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 19:02:48,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 19:02:48,107 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:02:48,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:02:48,409 INFO L93 Difference]: Finished difference Result 177 states and 203 transitions. [2023-12-21 19:02:48,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 19:02:48,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2023-12-21 19:02:48,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:02:48,412 INFO L225 Difference]: With dead ends: 177 [2023-12-21 19:02:48,412 INFO L226 Difference]: Without dead ends: 164 [2023-12-21 19:02:48,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-21 19:02:48,413 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 191 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 19:02:48,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 71 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 19:02:48,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-21 19:02:48,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 122. [2023-12-21 19:02:48,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 118 states have (on average 1.076271186440678) internal successors, (127), 118 states have internal predecessors, (127), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:02:48,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 131 transitions. [2023-12-21 19:02:48,441 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 131 transitions. Word has length 48 [2023-12-21 19:02:48,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:02:48,441 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 131 transitions. [2023-12-21 19:02:48,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:02:48,442 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 131 transitions. [2023-12-21 19:02:48,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 19:02:48,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:02:48,444 INFO L195 NwaCegarLoop]: trace histogram [88, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:02:48,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 19:02:48,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:48,648 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:02:48,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:02:48,648 INFO L85 PathProgramCache]: Analyzing trace with hash -389973306, now seen corresponding path program 4 times [2023-12-21 19:02:48,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:02:48,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365859639] [2023-12-21 19:02:48,649 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 19:02:48,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:02:48,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:02:48,650 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:02:48,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 19:02:48,946 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 19:02:48,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:02:48,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 19:02:48,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:02:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 1591 proven. 253 refuted. 0 times theorem prover too weak. 2363 trivial. 0 not checked. [2023-12-21 19:02:49,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:02:51,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 1591 proven. 253 refuted. 0 times theorem prover too weak. 2363 trivial. 0 not checked. [2023-12-21 19:02:51,049 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:02:51,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365859639] [2023-12-21 19:02:51,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365859639] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:02:51,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:02:51,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-12-21 19:02:51,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96792275] [2023-12-21 19:02:51,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:02:51,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 19:02:51,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:02:51,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 19:02:51,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 19:02:51,053 INFO L87 Difference]: Start difference. First operand 122 states and 131 transitions. Second operand has 50 states, 50 states have (on average 1.4) internal successors, (70), 50 states have internal predecessors, (70), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:03:02,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:03:02,181 INFO L93 Difference]: Finished difference Result 814 states and 1064 transitions. [2023-12-21 19:03:02,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 19:03:02,181 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.4) internal successors, (70), 50 states have internal predecessors, (70), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 123 [2023-12-21 19:03:02,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:03:02,185 INFO L225 Difference]: With dead ends: 814 [2023-12-21 19:03:02,185 INFO L226 Difference]: Without dead ends: 724 [2023-12-21 19:03:02,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1823, Invalid=3433, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 19:03:02,188 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 6116 mSDsluCounter, 3347 mSDsCounter, 0 mSdLazyCounter, 4997 mSolverCounterSat, 2615 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6116 SdHoareTripleChecker+Valid, 3566 SdHoareTripleChecker+Invalid, 7612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2615 IncrementalHoareTripleChecker+Valid, 4997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-21 19:03:02,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6116 Valid, 3566 Invalid, 7612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2615 Valid, 4997 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-21 19:03:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2023-12-21 19:03:02,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 218. [2023-12-21 19:03:02,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 214 states have (on average 1.0420560747663552) internal successors, (223), 214 states have internal predecessors, (223), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:03:02,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 227 transitions. [2023-12-21 19:03:02,237 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 227 transitions. Word has length 123 [2023-12-21 19:03:02,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:03:02,237 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 227 transitions. [2023-12-21 19:03:02,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.4) internal successors, (70), 50 states have internal predecessors, (70), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:03:02,237 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 227 transitions. [2023-12-21 19:03:02,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-21 19:03:02,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:03:02,240 INFO L195 NwaCegarLoop]: trace histogram [184, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:03:02,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-21 19:03:02,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:03:02,452 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:03:02,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:03:02,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1261614790, now seen corresponding path program 5 times [2023-12-21 19:03:02,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:03:02,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529391548] [2023-12-21 19:03:02,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 19:03:02,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:03:02,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:03:02,454 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:03:02,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 19:03:32,110 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2023-12-21 19:03:32,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:03:32,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 19:03:32,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:03:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 17599 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17598 trivial. 0 not checked. [2023-12-21 19:03:32,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:03:32,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:03:32,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529391548] [2023-12-21 19:03:32,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529391548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:03:32,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:03:32,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 19:03:32,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063655476] [2023-12-21 19:03:32,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:03:32,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 19:03:32,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:03:32,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 19:03:32,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:03:32,468 INFO L87 Difference]: Start difference. First operand 218 states and 227 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 19:03:32,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:03:32,605 INFO L93 Difference]: Finished difference Result 236 states and 250 transitions. [2023-12-21 19:03:32,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 19:03:32,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 219 [2023-12-21 19:03:32,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:03:32,609 INFO L225 Difference]: With dead ends: 236 [2023-12-21 19:03:32,609 INFO L226 Difference]: Without dead ends: 225 [2023-12-21 19:03:32,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:03:32,609 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 19:03:32,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 40 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 19:03:32,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-21 19:03:32,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 220. [2023-12-21 19:03:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 216 states have (on average 1.0416666666666667) internal successors, (225), 216 states have internal predecessors, (225), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:03:32,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 229 transitions. [2023-12-21 19:03:32,665 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 229 transitions. Word has length 219 [2023-12-21 19:03:32,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:03:32,665 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 229 transitions. [2023-12-21 19:03:32,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 19:03:32,666 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 229 transitions. [2023-12-21 19:03:32,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-21 19:03:32,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:03:32,668 INFO L195 NwaCegarLoop]: trace histogram [184, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:03:32,696 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 [2023-12-21 19:03:32,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:03:32,868 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:03:32,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:03:32,869 INFO L85 PathProgramCache]: Analyzing trace with hash -856399429, now seen corresponding path program 1 times [2023-12-21 19:03:32,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:03:32,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850132701] [2023-12-21 19:03:32,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:03:32,869 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:03:32,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:03:32,870 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:03:32,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 19:03:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:03:33,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 19:03:33,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:03:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 17600 backedges. 6631 proven. 1081 refuted. 0 times theorem prover too weak. 9888 trivial. 0 not checked. [2023-12-21 19:03:34,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:03:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 17600 backedges. 6631 proven. 1081 refuted. 0 times theorem prover too weak. 9888 trivial. 0 not checked. [2023-12-21 19:03:40,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:03:40,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850132701] [2023-12-21 19:03:40,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850132701] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:03:40,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:03:40,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 98 [2023-12-21 19:03:40,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996665572] [2023-12-21 19:03:40,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:03:40,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-12-21 19:03:40,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:03:40,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-12-21 19:03:40,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506 [2023-12-21 19:03:40,233 INFO L87 Difference]: Start difference. First operand 220 states and 229 transitions. Second operand has 98 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 98 states have internal predecessors, (119), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:04:45,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:04:45,763 INFO L93 Difference]: Finished difference Result 1604 states and 2091 transitions. [2023-12-21 19:04:45,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-21 19:04:45,764 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 98 states have internal predecessors, (119), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 220 [2023-12-21 19:04:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:04:45,768 INFO L225 Difference]: With dead ends: 1604 [2023-12-21 19:04:45,768 INFO L226 Difference]: Without dead ends: 1440 [2023-12-21 19:04:45,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3384 ImplicationChecksByTransitivity, 49.0s TimeCoverageRelationStatistics Valid=7103, Invalid=13777, Unknown=0, NotChecked=0, Total=20880 [2023-12-21 19:04:45,774 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 22972 mSDsluCounter, 13457 mSDsCounter, 0 mSdLazyCounter, 20217 mSolverCounterSat, 14775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22972 SdHoareTripleChecker+Valid, 13888 SdHoareTripleChecker+Invalid, 34992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14775 IncrementalHoareTripleChecker+Valid, 20217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2023-12-21 19:04:45,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22972 Valid, 13888 Invalid, 34992 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14775 Valid, 20217 Invalid, 0 Unknown, 0 Unchecked, 21.1s Time] [2023-12-21 19:04:45,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2023-12-21 19:04:45,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 412. [2023-12-21 19:04:45,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 408 states have (on average 1.0220588235294117) internal successors, (417), 408 states have internal predecessors, (417), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:04:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 421 transitions. [2023-12-21 19:04:45,885 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 421 transitions. Word has length 220 [2023-12-21 19:04:45,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:04:45,885 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 421 transitions. [2023-12-21 19:04:45,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 98 states have internal predecessors, (119), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:04:45,886 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 421 transitions. [2023-12-21 19:04:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-12-21 19:04:45,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:04:45,891 INFO L195 NwaCegarLoop]: trace histogram [376, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:04:45,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-21 19:04:46,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:04:46,117 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:04:46,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:04:46,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1442507195, now seen corresponding path program 2 times [2023-12-21 19:04:46,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:04:46,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403913764] [2023-12-21 19:04:46,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 19:04:46,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:04:46,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:04:46,120 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:04:46,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 19:04:47,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 19:04:47,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:04:47,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 1966 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-21 19:04:47,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:04:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 72032 backedges. 27079 proven. 4465 refuted. 0 times theorem prover too weak. 40488 trivial. 0 not checked. [2023-12-21 19:04:51,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:05:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 72032 backedges. 27079 proven. 4465 refuted. 0 times theorem prover too weak. 40488 trivial. 0 not checked. [2023-12-21 19:05:13,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:05:13,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403913764] [2023-12-21 19:05:13,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403913764] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:05:13,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:05:13,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 194 [2023-12-21 19:05:13,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111656365] [2023-12-21 19:05:13,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:05:13,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2023-12-21 19:05:13,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:05:13,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2023-12-21 19:05:13,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9601, Invalid=27841, Unknown=0, NotChecked=0, Total=37442 [2023-12-21 19:05:13,155 INFO L87 Difference]: Start difference. First operand 412 states and 421 transitions. Second operand has 194 states, 194 states have (on average 1.1082474226804124) internal successors, (215), 194 states have internal predecessors, (215), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:13:45,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:13:45,137 INFO L93 Difference]: Finished difference Result 3188 states and 4155 transitions. [2023-12-21 19:13:45,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-21 19:13:45,137 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 1.1082474226804124) internal successors, (215), 194 states have internal predecessors, (215), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 412 [2023-12-21 19:13:45,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:13:45,146 INFO L225 Difference]: With dead ends: 3188 [2023-12-21 19:13:45,146 INFO L226 Difference]: Without dead ends: 2880 [2023-12-21 19:13:45,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13680 ImplicationChecksByTransitivity, 440.5s TimeCoverageRelationStatistics Valid=28031, Invalid=55201, Unknown=0, NotChecked=0, Total=83232 [2023-12-21 19:13:45,154 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 83381 mSDsluCounter, 54550 mSDsCounter, 0 mSdLazyCounter, 81897 mSolverCounterSat, 72397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83381 SdHoareTripleChecker+Valid, 55413 SdHoareTripleChecker+Invalid, 154294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 72397 IncrementalHoareTripleChecker+Valid, 81897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.2s IncrementalHoareTripleChecker+Time [2023-12-21 19:13:45,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83381 Valid, 55413 Invalid, 154294 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [72397 Valid, 81897 Invalid, 0 Unknown, 0 Unchecked, 86.2s Time] [2023-12-21 19:13:45,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2023-12-21 19:13:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 796. [2023-12-21 19:13:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 792 states have (on average 1.0113636363636365) internal successors, (801), 792 states have internal predecessors, (801), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:13:45,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 805 transitions. [2023-12-21 19:13:45,316 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 805 transitions. Word has length 412 [2023-12-21 19:13:45,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:13:45,316 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 805 transitions. [2023-12-21 19:13:45,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 1.1082474226804124) internal successors, (215), 194 states have internal predecessors, (215), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:13:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 805 transitions. [2023-12-21 19:13:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2023-12-21 19:13:45,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:13:45,333 INFO L195 NwaCegarLoop]: trace histogram [760, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:13:45,378 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 [2023-12-21 19:13:45,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:13:45,548 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:13:45,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:13:45,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1636828741, now seen corresponding path program 3 times [2023-12-21 19:13:45,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:13:45,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768847652] [2023-12-21 19:13:45,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 19:13:45,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:13:45,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:13:45,551 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:13:45,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 19:13:46,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 19:13:46,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:13:46,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 19:13:46,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:13:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 291488 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 291487 trivial. 0 not checked. [2023-12-21 19:13:47,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:13:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 291488 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 291487 trivial. 0 not checked. [2023-12-21 19:13:48,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:13:48,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768847652] [2023-12-21 19:13:48,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768847652] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:13:48,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:13:48,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-21 19:13:48,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033520014] [2023-12-21 19:13:48,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:13:48,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 19:13:48,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:13:48,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 19:13:48,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 19:13:48,216 INFO L87 Difference]: Start difference. First operand 796 states and 805 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:13:48,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:13:48,687 INFO L93 Difference]: Finished difference Result 1034 states and 1054 transitions. [2023-12-21 19:13:48,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 19:13:48,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 796 [2023-12-21 19:13:48,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:13:48,691 INFO L225 Difference]: With dead ends: 1034 [2023-12-21 19:13:48,691 INFO L226 Difference]: Without dead ends: 1025 [2023-12-21 19:13:48,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1592 GetRequests, 1584 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-21 19:13:48,692 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 130 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 19:13:48,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 67 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 19:13:48,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2023-12-21 19:13:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 808. [2023-12-21 19:13:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 804 states have (on average 1.0149253731343284) internal successors, (816), 804 states have internal predecessors, (816), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:13:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 820 transitions. [2023-12-21 19:13:48,901 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 820 transitions. Word has length 796 [2023-12-21 19:13:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:13:48,901 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 820 transitions. [2023-12-21 19:13:48,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:13:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 820 transitions. [2023-12-21 19:13:48,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2023-12-21 19:13:48,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:13:48,906 INFO L195 NwaCegarLoop]: trace histogram [760, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:13:48,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 19:13:49,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:13:49,107 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:13:49,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:13:49,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1886541320, now seen corresponding path program 4 times [2023-12-21 19:13:49,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:13:49,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71727164] [2023-12-21 19:13:49,109 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 19:13:49,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:13:49,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:13:49,110 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:13:49,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 19:13:51,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 19:13:51,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:13:51,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 3913 conjuncts, 193 conjunts are in the unsatisfiable core [2023-12-21 19:13:51,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:14:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 291530 backedges. 109447 proven. 18145 refuted. 0 times theorem prover too weak. 163938 trivial. 0 not checked. [2023-12-21 19:14:09,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:15:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 291530 backedges. 109447 proven. 18145 refuted. 0 times theorem prover too weak. 163938 trivial. 0 not checked. [2023-12-21 19:15:31,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:15:31,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71727164] [2023-12-21 19:15:31,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71727164] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:15:31,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:15:31,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [194, 194] total 386 [2023-12-21 19:15:31,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95562980] [2023-12-21 19:15:31,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:15:31,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 386 states [2023-12-21 19:15:31,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:15:31,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 386 interpolants. [2023-12-21 19:15:31,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37633, Invalid=110977, Unknown=0, NotChecked=0, Total=148610 [2023-12-21 19:15:31,711 INFO L87 Difference]: Start difference. First operand 808 states and 820 transitions. Second operand has 386 states, 386 states have (on average 1.0544041450777202) internal successors, (407), 386 states have internal predecessors, (407), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 19:16:36,011 WARN L293 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 576 DAG size of output: 9 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 19:16:49,053 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 (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 19:16:49,053 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 19:16:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2023-12-21 19:16:49,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1616 GetRequests, 1230 SyntacticMatches, 0 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36863 ImplicationChecksByTransitivity, 121.6s TimeCoverageRelationStatistics Valid=38019, Invalid=111363, Unknown=0, NotChecked=0, Total=149382 [2023-12-21 19:16:49,072 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 37437 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 37609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 37437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.3s IncrementalHoareTripleChecker+Time [2023-12-21 19:16:49,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 969 Invalid, 37609 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [172 Valid, 37437 Invalid, 0 Unknown, 0 Unchecked, 39.3s Time] [2023-12-21 19:16:49,073 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 19:16:49,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 19:16:49,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:16:49,280 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (808states) and FLOYD_HOARE automaton (currently 195 states, 386 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 387 known predicates. [2023-12-21 19:16:49,285 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 2, 1, 1, 1] [2023-12-21 19:16:49,287 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 19:16:49,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 07:16:49 BoogieIcfgContainer [2023-12-21 19:16:49,289 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 19:16:49,290 INFO L158 Benchmark]: Toolchain (without parser) took 850603.45ms. Allocated memory was 203.4MB in the beginning and 541.1MB in the end (delta: 337.6MB). Free memory was 158.2MB in the beginning and 332.1MB in the end (delta: -173.8MB). Peak memory consumption was 387.1MB. Max. memory is 8.0GB. [2023-12-21 19:16:49,290 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 203.4MB. Free memory is still 160.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 19:16:49,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.41ms. Allocated memory is still 203.4MB. Free memory was 157.8MB in the beginning and 146.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 19:16:49,291 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.90ms. Allocated memory is still 203.4MB. Free memory was 146.2MB in the beginning and 144.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 19:16:49,291 INFO L158 Benchmark]: Boogie Preprocessor took 37.87ms. Allocated memory is still 203.4MB. Free memory was 144.6MB in the beginning and 142.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 19:16:49,292 INFO L158 Benchmark]: RCFGBuilder took 452.60ms. Allocated memory is still 203.4MB. Free memory was 142.5MB in the beginning and 127.4MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-21 19:16:49,292 INFO L158 Benchmark]: TraceAbstraction took 849848.17ms. Allocated memory was 203.4MB in the beginning and 541.1MB in the end (delta: 337.6MB). Free memory was 126.8MB in the beginning and 332.1MB in the end (delta: -205.3MB). Peak memory consumption was 355.6MB. Max. memory is 8.0GB. [2023-12-21 19:16:49,294 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 203.4MB. Free memory is still 160.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 214.41ms. Allocated memory is still 203.4MB. Free memory was 157.8MB in the beginning and 146.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.90ms. Allocated memory is still 203.4MB. Free memory was 146.2MB in the beginning and 144.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.87ms. Allocated memory is still 203.4MB. Free memory was 144.6MB in the beginning and 142.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 452.60ms. Allocated memory is still 203.4MB. Free memory was 142.5MB in the beginning and 127.4MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 849848.17ms. Allocated memory was 203.4MB in the beginning and 541.1MB in the end (delta: 337.6MB). Free memory was 126.8MB in the beginning and 332.1MB in the end (delta: -205.3MB). Peak memory consumption was 355.6MB. 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: 10]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 10). Cancelled while NwaCegarLoop was constructing difference of abstraction (808states) and FLOYD_HOARE automaton (currently 195 states, 386 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 387 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 849.8s, OverallIterations: 14, TraceHistogramMax: 760, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 671.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 115208 SdHoareTripleChecker+Valid, 156.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 115208 mSDsluCounter, 75387 SdHoareTripleChecker+Invalid, 135.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 73511 mSDsCounter, 90682 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 146317 IncrementalHoareTripleChecker+Invalid, 236999 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90682 mSolverCounterUnsat, 1876 mSDtfsCounter, 146317 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5469 GetRequests, 4498 SyntacticMatches, 0 SemanticMatches, 970 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55025 ImplicationChecksByTransitivity, 620.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=808occurred in iteration=13, InterpolantAutomatonStates: 416, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 4317 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 32.8s SatisfiabilityAnalysisTime, 139.0s InterpolantComputationTime, 2806 NumberOfCodeBlocks, 2002 NumberOfCodeBlocksAsserted, 91 NumberOfCheckSat, 5280 ConstructedInterpolants, 0 QuantifiedInterpolants, 13010 SizeOfPredicates, 0 NumberOfNonLiveVariables, 9064 ConjunctsInSsa, 409 ConjunctsInUnsatCore, 23 InterpolantComputations, 5 PerfectInterpolantSequences, 1324001/1372025 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