/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/combinations/Problem05_label43+token_ring.09.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 21:53:33,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 21:53:33,386 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 21:53:33,390 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 21:53:33,391 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 21:53:33,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 21:53:33,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 21:53:33,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 21:53:33,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 21:53:33,416 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 21:53:33,416 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 21:53:33,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 21:53:33,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 21:53:33,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 21:53:33,417 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 21:53:33,417 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 21:53:33,417 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 21:53:33,418 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 21:53:33,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 21:53:33,418 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 21:53:33,418 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 21:53:33,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 21:53:33,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 21:53:33,419 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 21:53:33,419 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 21:53:33,419 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 21:53:33,419 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 21:53:33,419 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 21:53:33,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 21:53:33,419 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 21:53:33,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 21:53:33,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 21:53:33,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 21:53:33,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 21:53:33,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:53:33,421 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 21:53:33,421 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 21:53:33,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 21:53:33,421 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 21:53:33,421 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 21:53:33,421 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 21:53:33,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 21:53:33,421 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 21:53:33,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 21:53:33,422 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 21:53:33,422 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 21:53:33,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 21:53:33,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 21:53:33,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 21:53:33,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 21:53:33,626 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 21:53:33,626 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 21:53:33,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-2.c [2023-12-21 21:53:34,685 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 21:53:35,137 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 21:53:35,137 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-2.c [2023-12-21 21:53:35,185 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/becd7e8d8/0279c4487a6c421b96c449b621cdc40a/FLAGa09249260 [2023-12-21 21:53:35,197 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/becd7e8d8/0279c4487a6c421b96c449b621cdc40a [2023-12-21 21:53:35,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 21:53:35,200 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 21:53:35,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 21:53:35,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 21:53:35,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 21:53:35,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:53:35" (1/1) ... [2023-12-21 21:53:35,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71fac128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:53:35, skipping insertion in model container [2023-12-21 21:53:35,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:53:35" (1/1) ... [2023-12-21 21:53:35,366 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 21:53:36,656 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-2.c[381679,381692] [2023-12-21 21:53:36,678 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-2.c[383339,383352] [2023-12-21 21:53:36,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:53:36,893 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 21:53:37,479 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-2.c[381679,381692] [2023-12-21 21:53:37,482 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-2.c[383339,383352] [2023-12-21 21:53:37,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:53:37,555 INFO L206 MainTranslator]: Completed translation [2023-12-21 21:53:37,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:53:37 WrapperNode [2023-12-21 21:53:37,556 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 21:53:37,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 21:53:37,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 21:53:37,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 21:53:37,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:53:37" (1/1) ... [2023-12-21 21:53:37,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:53:37" (1/1) ... [2023-12-21 21:53:37,953 INFO L138 Inliner]: procedures = 63, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13022 [2023-12-21 21:53:37,954 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 21:53:37,954 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 21:53:37,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 21:53:37,954 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 21:53:37,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:53:37" (1/1) ... [2023-12-21 21:53:37,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:53:37" (1/1) ... [2023-12-21 21:53:38,031 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:53:37" (1/1) ... [2023-12-21 21:53:38,119 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 21:53:38,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:53:37" (1/1) ... [2023-12-21 21:53:38,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:53:37" (1/1) ... [2023-12-21 21:53:38,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:53:37" (1/1) ... [2023-12-21 21:53:38,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:53:37" (1/1) ... [2023-12-21 21:53:38,349 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:53:37" (1/1) ... [2023-12-21 21:53:38,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:53:37" (1/1) ... [2023-12-21 21:53:38,421 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 21:53:38,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 21:53:38,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 21:53:38,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 21:53:38,423 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:53:37" (1/1) ... [2023-12-21 21:53:38,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:53:38,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 21:53:38,446 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 21:53:38,465 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 21:53:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 21:53:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 21:53:38,470 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 21:53:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 21:53:38,470 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 21:53:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 21:53:38,470 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 21:53:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 21:53:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-21 21:53:38,548 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-21 21:53:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 21:53:38,548 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 21:53:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 21:53:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 21:53:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 21:53:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 21:53:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 21:53:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 21:53:38,641 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 21:53:38,643 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 21:53:46,096 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 21:53:46,182 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 21:53:46,182 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-12-21 21:53:46,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:53:46 BoogieIcfgContainer [2023-12-21 21:53:46,185 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 21:53:46,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 21:53:46,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 21:53:46,189 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 21:53:46,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:53:35" (1/3) ... [2023-12-21 21:53:46,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162e1571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:53:46, skipping insertion in model container [2023-12-21 21:53:46,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:53:37" (2/3) ... [2023-12-21 21:53:46,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162e1571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:53:46, skipping insertion in model container [2023-12-21 21:53:46,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:53:46" (3/3) ... [2023-12-21 21:53:46,190 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.09.cil-2.c [2023-12-21 21:53:46,202 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 21:53:46,202 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 21:53:46,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 21:53:46,260 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;@4a4c33f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 21:53:46,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 21:53:46,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 2410 states, 2375 states have (on average 1.8787368421052633) internal successors, (4462), 2380 states have internal predecessors, (4462), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-21 21:53:46,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:46,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:46,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:46,281 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:46,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:46,285 INFO L85 PathProgramCache]: Analyzing trace with hash -406394513, now seen corresponding path program 1 times [2023-12-21 21:53:46,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:46,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438439458] [2023-12-21 21:53:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:46,297 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 21:53:46,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:46,299 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 21:53:46,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 21:53:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:46,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:53:46,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:46,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:46,525 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:46,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:46,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438439458] [2023-12-21 21:53:46,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438439458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:46,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:46,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:53:46,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195135000] [2023-12-21 21:53:46,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:46,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:53:46,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:46,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:53:46,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:53:46,566 INFO L87 Difference]: Start difference. First operand has 2410 states, 2375 states have (on average 1.8787368421052633) internal successors, (4462), 2380 states have internal predecessors, (4462), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:46,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:53:46,737 INFO L93 Difference]: Finished difference Result 4813 states and 9011 transitions. [2023-12-21 21:53:46,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:53:46,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:53:46,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:53:46,767 INFO L225 Difference]: With dead ends: 4813 [2023-12-21 21:53:46,767 INFO L226 Difference]: Without dead ends: 2405 [2023-12-21 21:53:46,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:53:46,780 INFO L413 NwaCegarLoop]: 4383 mSDtfsCounter, 453 mSDsluCounter, 3959 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 8342 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:53:46,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 8342 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:53:46,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2023-12-21 21:53:46,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 2405. [2023-12-21 21:53:46,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2372 states have (on average 1.8414839797639122) internal successors, (4368), 2375 states have internal predecessors, (4368), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-21 21:53:46,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 4416 transitions. [2023-12-21 21:53:46,888 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 4416 transitions. Word has length 132 [2023-12-21 21:53:46,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:53:46,889 INFO L495 AbstractCegarLoop]: Abstraction has 2405 states and 4416 transitions. [2023-12-21 21:53:46,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 4416 transitions. [2023-12-21 21:53:46,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:46,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:46,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:46,904 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 21:53:47,101 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 21:53:47,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:47,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:47,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1268228115, now seen corresponding path program 1 times [2023-12-21 21:53:47,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:47,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758676827] [2023-12-21 21:53:47,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:47,103 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 21:53:47,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:47,104 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 21:53:47,105 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 21:53:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:47,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:53:47,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:47,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:47,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:47,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758676827] [2023-12-21 21:53:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758676827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:47,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:47,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:53:47,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124389417] [2023-12-21 21:53:47,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:47,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:53:47,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:47,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:53:47,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:53:47,377 INFO L87 Difference]: Start difference. First operand 2405 states and 4416 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:47,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:53:47,991 INFO L93 Difference]: Finished difference Result 2980 states and 5355 transitions. [2023-12-21 21:53:47,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:53:47,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:53:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:53:48,002 INFO L225 Difference]: With dead ends: 2980 [2023-12-21 21:53:48,002 INFO L226 Difference]: Without dead ends: 2711 [2023-12-21 21:53:48,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:53:48,004 INFO L413 NwaCegarLoop]: 4333 mSDtfsCounter, 4821 mSDsluCounter, 8838 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4838 SdHoareTripleChecker+Valid, 13171 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:53:48,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4838 Valid, 13171 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 21:53:48,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2023-12-21 21:53:48,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2686. [2023-12-21 21:53:48,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2628 states have (on average 1.8222983257229832) internal successors, (4789), 2632 states have internal predecessors, (4789), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:53:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4874 transitions. [2023-12-21 21:53:48,053 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4874 transitions. Word has length 132 [2023-12-21 21:53:48,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:53:48,053 INFO L495 AbstractCegarLoop]: Abstraction has 2686 states and 4874 transitions. [2023-12-21 21:53:48,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4874 transitions. [2023-12-21 21:53:48,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:48,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:48,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:48,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-21 21:53:48,259 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 21:53:48,260 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:48,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:48,260 INFO L85 PathProgramCache]: Analyzing trace with hash -295701143, now seen corresponding path program 1 times [2023-12-21 21:53:48,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:48,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835729650] [2023-12-21 21:53:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:48,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:53:48,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:48,262 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 21:53:48,263 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 21:53:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:48,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:53:48,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:48,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:48,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:48,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835729650] [2023-12-21 21:53:48,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835729650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:48,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:48,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:53:48,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629176492] [2023-12-21 21:53:48,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:48,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:53:48,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:48,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:53:48,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:53:48,477 INFO L87 Difference]: Start difference. First operand 2686 states and 4874 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:48,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:53:48,869 INFO L93 Difference]: Finished difference Result 3236 states and 5771 transitions. [2023-12-21 21:53:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:53:48,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:53:48,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:53:48,879 INFO L225 Difference]: With dead ends: 3236 [2023-12-21 21:53:48,880 INFO L226 Difference]: Without dead ends: 2686 [2023-12-21 21:53:48,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:53:48,885 INFO L413 NwaCegarLoop]: 4246 mSDtfsCounter, 4568 mSDsluCounter, 8366 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4585 SdHoareTripleChecker+Valid, 12612 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:53:48,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4585 Valid, 12612 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:53:48,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2023-12-21 21:53:48,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2023-12-21 21:53:48,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2628 states have (on average 1.8196347031963471) internal successors, (4782), 2632 states have internal predecessors, (4782), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:53:48,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4867 transitions. [2023-12-21 21:53:48,943 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4867 transitions. Word has length 132 [2023-12-21 21:53:48,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:53:48,943 INFO L495 AbstractCegarLoop]: Abstraction has 2686 states and 4867 transitions. [2023-12-21 21:53:48,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:48,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4867 transitions. [2023-12-21 21:53:48,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:48,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:48,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:48,954 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 21:53:49,154 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 21:53:49,154 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:49,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:49,155 INFO L85 PathProgramCache]: Analyzing trace with hash 2090975341, now seen corresponding path program 1 times [2023-12-21 21:53:49,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:49,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356438838] [2023-12-21 21:53:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:49,156 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 21:53:49,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:49,157 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 21:53:49,162 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 21:53:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:49,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:53:49,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:49,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:49,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:49,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356438838] [2023-12-21 21:53:49,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356438838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:49,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:49,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:53:49,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390532982] [2023-12-21 21:53:49,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:49,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:53:49,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:49,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:53:49,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:53:49,344 INFO L87 Difference]: Start difference. First operand 2686 states and 4867 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:49,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:53:49,700 INFO L93 Difference]: Finished difference Result 3236 states and 5757 transitions. [2023-12-21 21:53:49,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:53:49,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:53:49,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:53:49,710 INFO L225 Difference]: With dead ends: 3236 [2023-12-21 21:53:49,710 INFO L226 Difference]: Without dead ends: 2686 [2023-12-21 21:53:49,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:53:49,714 INFO L413 NwaCegarLoop]: 4243 mSDtfsCounter, 4561 mSDsluCounter, 8362 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 12605 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:53:49,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 12605 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:53:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2023-12-21 21:53:49,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2023-12-21 21:53:49,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2628 states have (on average 1.8169710806697108) internal successors, (4775), 2632 states have internal predecessors, (4775), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:53:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4860 transitions. [2023-12-21 21:53:49,785 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4860 transitions. Word has length 132 [2023-12-21 21:53:49,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:53:49,786 INFO L495 AbstractCegarLoop]: Abstraction has 2686 states and 4860 transitions. [2023-12-21 21:53:49,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4860 transitions. [2023-12-21 21:53:49,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:49,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:49,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:49,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 21:53:49,993 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 21:53:49,993 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:49,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:49,994 INFO L85 PathProgramCache]: Analyzing trace with hash -400393103, now seen corresponding path program 1 times [2023-12-21 21:53:49,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:49,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250481310] [2023-12-21 21:53:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:49,994 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 21:53:49,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:49,995 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 21:53:49,996 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 21:53:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:50,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:53:50,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:50,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:50,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:50,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250481310] [2023-12-21 21:53:50,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250481310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:50,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:50,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:53:50,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132994797] [2023-12-21 21:53:50,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:50,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:53:50,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:50,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:53:50,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:53:50,192 INFO L87 Difference]: Start difference. First operand 2686 states and 4860 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:50,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:53:50,553 INFO L93 Difference]: Finished difference Result 3236 states and 5743 transitions. [2023-12-21 21:53:50,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:53:50,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:53:50,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:53:50,578 INFO L225 Difference]: With dead ends: 3236 [2023-12-21 21:53:50,578 INFO L226 Difference]: Without dead ends: 2686 [2023-12-21 21:53:50,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:53:50,583 INFO L413 NwaCegarLoop]: 4240 mSDtfsCounter, 4555 mSDsluCounter, 8358 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4572 SdHoareTripleChecker+Valid, 12598 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:53:50,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4572 Valid, 12598 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:53:50,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2023-12-21 21:53:50,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2023-12-21 21:53:50,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2628 states have (on average 1.8143074581430745) internal successors, (4768), 2632 states have internal predecessors, (4768), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:53:50,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4853 transitions. [2023-12-21 21:53:50,639 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4853 transitions. Word has length 132 [2023-12-21 21:53:50,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:53:50,640 INFO L495 AbstractCegarLoop]: Abstraction has 2686 states and 4853 transitions. [2023-12-21 21:53:50,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:50,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4853 transitions. [2023-12-21 21:53:50,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:50,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:50,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:50,648 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 21:53:50,846 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 21:53:50,846 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:50,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash -480759827, now seen corresponding path program 1 times [2023-12-21 21:53:50,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:50,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559678071] [2023-12-21 21:53:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:50,847 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 21:53:50,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:50,848 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 21:53:50,881 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 21:53:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:50,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:53:50,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:51,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:51,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:51,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559678071] [2023-12-21 21:53:51,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559678071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:51,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:51,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:53:51,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47980833] [2023-12-21 21:53:51,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:51,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:53:51,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:51,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:53:51,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:53:51,017 INFO L87 Difference]: Start difference. First operand 2686 states and 4853 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:51,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:53:51,383 INFO L93 Difference]: Finished difference Result 3236 states and 5729 transitions. [2023-12-21 21:53:51,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:53:51,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:53:51,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:53:51,392 INFO L225 Difference]: With dead ends: 3236 [2023-12-21 21:53:51,392 INFO L226 Difference]: Without dead ends: 2686 [2023-12-21 21:53:51,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:53:51,396 INFO L413 NwaCegarLoop]: 4237 mSDtfsCounter, 4549 mSDsluCounter, 8354 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4566 SdHoareTripleChecker+Valid, 12591 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:53:51,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4566 Valid, 12591 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:53:51,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2023-12-21 21:53:51,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2023-12-21 21:53:51,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2628 states have (on average 1.8116438356164384) internal successors, (4761), 2632 states have internal predecessors, (4761), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:53:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4846 transitions. [2023-12-21 21:53:51,581 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4846 transitions. Word has length 132 [2023-12-21 21:53:51,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:53:51,581 INFO L495 AbstractCegarLoop]: Abstraction has 2686 states and 4846 transitions. [2023-12-21 21:53:51,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:51,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4846 transitions. [2023-12-21 21:53:51,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:51,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:51,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:51,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 21:53:51,791 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 21:53:51,791 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:51,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:51,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1591730959, now seen corresponding path program 1 times [2023-12-21 21:53:51,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:51,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019914420] [2023-12-21 21:53:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:51,793 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 21:53:51,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:51,794 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 21:53:51,795 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 21:53:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:51,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:53:51,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:51,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:51,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:51,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:51,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019914420] [2023-12-21 21:53:51,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019914420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:51,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:51,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:53:51,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281254801] [2023-12-21 21:53:51,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:51,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:53:51,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:51,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:53:51,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:53:51,966 INFO L87 Difference]: Start difference. First operand 2686 states and 4846 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:52,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:53:52,355 INFO L93 Difference]: Finished difference Result 3236 states and 5715 transitions. [2023-12-21 21:53:52,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:53:52,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:53:52,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:53:52,364 INFO L225 Difference]: With dead ends: 3236 [2023-12-21 21:53:52,365 INFO L226 Difference]: Without dead ends: 2686 [2023-12-21 21:53:52,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:53:52,368 INFO L413 NwaCegarLoop]: 4234 mSDtfsCounter, 4543 mSDsluCounter, 8350 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4560 SdHoareTripleChecker+Valid, 12584 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:53:52,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4560 Valid, 12584 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:53:52,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2023-12-21 21:53:52,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2023-12-21 21:53:52,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2628 states have (on average 1.808980213089802) internal successors, (4754), 2632 states have internal predecessors, (4754), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:53:52,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4839 transitions. [2023-12-21 21:53:52,441 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4839 transitions. Word has length 132 [2023-12-21 21:53:52,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:53:52,442 INFO L495 AbstractCegarLoop]: Abstraction has 2686 states and 4839 transitions. [2023-12-21 21:53:52,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:52,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4839 transitions. [2023-12-21 21:53:52,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:52,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:52,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:52,449 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 21:53:52,649 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 21:53:52,649 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:52,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:52,650 INFO L85 PathProgramCache]: Analyzing trace with hash 730070959, now seen corresponding path program 1 times [2023-12-21 21:53:52,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:52,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352510737] [2023-12-21 21:53:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:52,651 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 21:53:52,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:52,652 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 21:53:52,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 21:53:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:52,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:53:52,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:52,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:52,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:52,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352510737] [2023-12-21 21:53:52,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352510737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:52,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:52,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:53:52,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138691607] [2023-12-21 21:53:52,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:52,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:53:52,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:52,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:53:52,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:53:52,831 INFO L87 Difference]: Start difference. First operand 2686 states and 4839 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:53,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:53:53,212 INFO L93 Difference]: Finished difference Result 3236 states and 5701 transitions. [2023-12-21 21:53:53,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:53:53,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:53:53,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:53:53,232 INFO L225 Difference]: With dead ends: 3236 [2023-12-21 21:53:53,233 INFO L226 Difference]: Without dead ends: 2686 [2023-12-21 21:53:53,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:53:53,235 INFO L413 NwaCegarLoop]: 4231 mSDtfsCounter, 4537 mSDsluCounter, 8346 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4554 SdHoareTripleChecker+Valid, 12577 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:53:53,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4554 Valid, 12577 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:53:53,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2023-12-21 21:53:53,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2023-12-21 21:53:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2628 states have (on average 1.806316590563166) internal successors, (4747), 2632 states have internal predecessors, (4747), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:53:53,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4832 transitions. [2023-12-21 21:53:53,300 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4832 transitions. Word has length 132 [2023-12-21 21:53:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:53:53,301 INFO L495 AbstractCegarLoop]: Abstraction has 2686 states and 4832 transitions. [2023-12-21 21:53:53,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:53,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4832 transitions. [2023-12-21 21:53:53,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:53,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:53,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:53,309 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 21:53:53,507 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 21:53:53,507 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:53,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:53,507 INFO L85 PathProgramCache]: Analyzing trace with hash -710189645, now seen corresponding path program 1 times [2023-12-21 21:53:53,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:53,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318231009] [2023-12-21 21:53:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:53,508 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 21:53:53,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:53,509 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 21:53:53,510 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 21:53:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:53,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:53:53,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:53,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:53,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:53,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318231009] [2023-12-21 21:53:53,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318231009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:53,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:53,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:53:53,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401017551] [2023-12-21 21:53:53,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:53,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:53:53,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:53,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:53:53,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:53:53,693 INFO L87 Difference]: Start difference. First operand 2686 states and 4832 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:54,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:53:54,058 INFO L93 Difference]: Finished difference Result 3236 states and 5687 transitions. [2023-12-21 21:53:54,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:53:54,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:53:54,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:53:54,066 INFO L225 Difference]: With dead ends: 3236 [2023-12-21 21:53:54,066 INFO L226 Difference]: Without dead ends: 2686 [2023-12-21 21:53:54,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:53:54,083 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4531 mSDsluCounter, 8342 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4548 SdHoareTripleChecker+Valid, 12570 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:53:54,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4548 Valid, 12570 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:53:54,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2023-12-21 21:53:54,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2023-12-21 21:53:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2628 states have (on average 1.8036529680365296) internal successors, (4740), 2632 states have internal predecessors, (4740), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:53:54,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4825 transitions. [2023-12-21 21:53:54,152 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4825 transitions. Word has length 132 [2023-12-21 21:53:54,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:53:54,152 INFO L495 AbstractCegarLoop]: Abstraction has 2686 states and 4825 transitions. [2023-12-21 21:53:54,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:54,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4825 transitions. [2023-12-21 21:53:54,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:54,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:54,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:54,161 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 21:53:54,364 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 21:53:54,364 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:54,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:54,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1310838993, now seen corresponding path program 1 times [2023-12-21 21:53:54,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:54,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488747946] [2023-12-21 21:53:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:54,366 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 21:53:54,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:54,367 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 21:53:54,377 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 21:53:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:54,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:53:54,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:54,535 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:54,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:54,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488747946] [2023-12-21 21:53:54,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488747946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:54,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:54,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:53:54,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787928670] [2023-12-21 21:53:54,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:54,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:53:54,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:53:54,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:53:54,537 INFO L87 Difference]: Start difference. First operand 2686 states and 4825 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:54,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:53:54,917 INFO L93 Difference]: Finished difference Result 3236 states and 5673 transitions. [2023-12-21 21:53:54,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:53:54,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:53:54,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:53:54,928 INFO L225 Difference]: With dead ends: 3236 [2023-12-21 21:53:54,928 INFO L226 Difference]: Without dead ends: 2686 [2023-12-21 21:53:54,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:53:54,930 INFO L413 NwaCegarLoop]: 4225 mSDtfsCounter, 4525 mSDsluCounter, 8338 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4542 SdHoareTripleChecker+Valid, 12563 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:53:54,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4542 Valid, 12563 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:53:54,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2023-12-21 21:53:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2023-12-21 21:53:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2628 states have (on average 1.8009893455098935) internal successors, (4733), 2632 states have internal predecessors, (4733), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:53:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4818 transitions. [2023-12-21 21:53:54,980 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4818 transitions. Word has length 132 [2023-12-21 21:53:54,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:53:54,980 INFO L495 AbstractCegarLoop]: Abstraction has 2686 states and 4818 transitions. [2023-12-21 21:53:54,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4818 transitions. [2023-12-21 21:53:54,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:54,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:54,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:54,986 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 21:53:55,186 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 21:53:55,186 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:55,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:55,186 INFO L85 PathProgramCache]: Analyzing trace with hash 193805875, now seen corresponding path program 1 times [2023-12-21 21:53:55,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:55,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494141500] [2023-12-21 21:53:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:55,187 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 21:53:55,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:55,188 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 21:53:55,188 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 21:53:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:55,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:53:55,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:55,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:55,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:55,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494141500] [2023-12-21 21:53:55,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494141500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:55,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:55,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:53:55,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520990667] [2023-12-21 21:53:55,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:55,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:53:55,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:55,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:53:55,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:53:55,343 INFO L87 Difference]: Start difference. First operand 2686 states and 4818 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:55,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:53:55,835 INFO L93 Difference]: Finished difference Result 3366 states and 5871 transitions. [2023-12-21 21:53:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:53:55,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:53:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:53:55,846 INFO L225 Difference]: With dead ends: 3366 [2023-12-21 21:53:55,847 INFO L226 Difference]: Without dead ends: 2816 [2023-12-21 21:53:55,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:53:55,849 INFO L413 NwaCegarLoop]: 4223 mSDtfsCounter, 4605 mSDsluCounter, 8334 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4622 SdHoareTripleChecker+Valid, 12557 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:53:55,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4622 Valid, 12557 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:53:55,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2023-12-21 21:53:55,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 2816. [2023-12-21 21:53:55,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2816 states, 2752 states have (on average 1.7834302325581395) internal successors, (4908), 2756 states have internal predecessors, (4908), 45 states have call successors, (45), 17 states have call predecessors, (45), 17 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 21:53:55,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2816 states to 2816 states and 4997 transitions. [2023-12-21 21:53:55,902 INFO L78 Accepts]: Start accepts. Automaton has 2816 states and 4997 transitions. Word has length 132 [2023-12-21 21:53:55,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:53:55,902 INFO L495 AbstractCegarLoop]: Abstraction has 2816 states and 4997 transitions. [2023-12-21 21:53:55,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:55,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2816 states and 4997 transitions. [2023-12-21 21:53:55,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:55,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:55,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:55,909 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 21:53:56,108 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 21:53:56,108 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:56,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:56,109 INFO L85 PathProgramCache]: Analyzing trace with hash 83639863, now seen corresponding path program 1 times [2023-12-21 21:53:56,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:56,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093714768] [2023-12-21 21:53:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:56,109 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 21:53:56,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:56,110 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 21:53:56,111 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 (13)] Waiting until timeout for monitored process [2023-12-21 21:53:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:56,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:53:56,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:56,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:56,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:56,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093714768] [2023-12-21 21:53:56,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093714768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:56,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:56,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:53:56,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157472999] [2023-12-21 21:53:56,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:56,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:53:56,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:56,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:53:56,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:53:56,278 INFO L87 Difference]: Start difference. First operand 2816 states and 4997 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:56,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:53:56,704 INFO L93 Difference]: Finished difference Result 3626 states and 6229 transitions. [2023-12-21 21:53:56,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:53:56,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:53:56,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:53:56,714 INFO L225 Difference]: With dead ends: 3626 [2023-12-21 21:53:56,714 INFO L226 Difference]: Without dead ends: 2946 [2023-12-21 21:53:56,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:53:56,717 INFO L413 NwaCegarLoop]: 4220 mSDtfsCounter, 4599 mSDsluCounter, 8330 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4616 SdHoareTripleChecker+Valid, 12550 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:53:56,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4616 Valid, 12550 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:53:56,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2023-12-21 21:53:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2946. [2023-12-21 21:53:56,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2876 states have (on average 1.7659944367176634) internal successors, (5079), 2880 states have internal predecessors, (5079), 47 states have call successors, (47), 21 states have call predecessors, (47), 21 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-21 21:53:56,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 5172 transitions. [2023-12-21 21:53:56,788 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 5172 transitions. Word has length 132 [2023-12-21 21:53:56,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:53:56,788 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 5172 transitions. [2023-12-21 21:53:56,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:56,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 5172 transitions. [2023-12-21 21:53:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:56,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:56,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:56,796 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 21:53:56,994 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 21:53:56,994 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:56,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:56,994 INFO L85 PathProgramCache]: Analyzing trace with hash -704101294, now seen corresponding path program 1 times [2023-12-21 21:53:56,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:56,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151914061] [2023-12-21 21:53:56,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:56,995 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 21:53:56,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:56,996 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 21:53:56,997 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 21:53:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:57,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:53:57,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:57,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:57,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:57,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151914061] [2023-12-21 21:53:57,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151914061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:57,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:57,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:53:57,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894466767] [2023-12-21 21:53:57,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:57,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:53:57,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:57,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:53:57,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:53:57,151 INFO L87 Difference]: Start difference. First operand 2946 states and 5172 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:57,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:53:57,571 INFO L93 Difference]: Finished difference Result 3886 states and 6579 transitions. [2023-12-21 21:53:57,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:53:57,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:53:57,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:53:57,578 INFO L225 Difference]: With dead ends: 3886 [2023-12-21 21:53:57,578 INFO L226 Difference]: Without dead ends: 3076 [2023-12-21 21:53:57,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:53:57,582 INFO L413 NwaCegarLoop]: 4217 mSDtfsCounter, 4592 mSDsluCounter, 8326 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4609 SdHoareTripleChecker+Valid, 12543 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:53:57,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4609 Valid, 12543 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:53:57,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2023-12-21 21:53:57,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3076. [2023-12-21 21:53:57,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3076 states, 3000 states have (on average 1.7486666666666666) internal successors, (5246), 3004 states have internal predecessors, (5246), 49 states have call successors, (49), 25 states have call predecessors, (49), 25 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 21:53:57,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 5343 transitions. [2023-12-21 21:53:57,640 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 5343 transitions. Word has length 132 [2023-12-21 21:53:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:53:57,640 INFO L495 AbstractCegarLoop]: Abstraction has 3076 states and 5343 transitions. [2023-12-21 21:53:57,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 5343 transitions. [2023-12-21 21:53:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:57,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:57,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:57,648 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 21:53:57,848 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 21:53:57,848 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:57,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:57,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1729595561, now seen corresponding path program 1 times [2023-12-21 21:53:57,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:57,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060838701] [2023-12-21 21:53:57,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:57,849 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 21:53:57,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:57,850 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 21:53:57,852 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 21:53:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:57,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:53:57,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:58,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:58,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:58,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060838701] [2023-12-21 21:53:58,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060838701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:58,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:58,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:53:58,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434255182] [2023-12-21 21:53:58,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:58,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:53:58,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:58,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:53:58,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:53:58,007 INFO L87 Difference]: Start difference. First operand 3076 states and 5343 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:58,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:53:58,441 INFO L93 Difference]: Finished difference Result 4146 states and 6921 transitions. [2023-12-21 21:53:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:53:58,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:53:58,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:53:58,449 INFO L225 Difference]: With dead ends: 4146 [2023-12-21 21:53:58,449 INFO L226 Difference]: Without dead ends: 3206 [2023-12-21 21:53:58,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:53:58,451 INFO L413 NwaCegarLoop]: 4214 mSDtfsCounter, 4585 mSDsluCounter, 8322 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4602 SdHoareTripleChecker+Valid, 12536 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:53:58,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4602 Valid, 12536 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:53:58,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2023-12-21 21:53:58,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 3206. [2023-12-21 21:53:58,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3206 states, 3124 states have (on average 1.7314340588988477) internal successors, (5409), 3128 states have internal predecessors, (5409), 51 states have call successors, (51), 29 states have call predecessors, (51), 29 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 21:53:58,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3206 states to 3206 states and 5510 transitions. [2023-12-21 21:53:58,509 INFO L78 Accepts]: Start accepts. Automaton has 3206 states and 5510 transitions. Word has length 132 [2023-12-21 21:53:58,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:53:58,509 INFO L495 AbstractCegarLoop]: Abstraction has 3206 states and 5510 transitions. [2023-12-21 21:53:58,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:58,509 INFO L276 IsEmpty]: Start isEmpty. Operand 3206 states and 5510 transitions. [2023-12-21 21:53:58,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:58,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:58,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:58,517 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 21:53:58,715 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 21:53:58,716 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:58,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:58,716 INFO L85 PathProgramCache]: Analyzing trace with hash 167901205, now seen corresponding path program 1 times [2023-12-21 21:53:58,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:58,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827084871] [2023-12-21 21:53:58,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:58,716 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 21:53:58,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:58,717 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:53:58,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-21 21:53:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:58,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:53:58,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:58,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:58,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:58,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827084871] [2023-12-21 21:53:58,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827084871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:58,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:58,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:53:58,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063776073] [2023-12-21 21:53:58,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:58,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:53:58,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:58,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:53:58,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:53:58,887 INFO L87 Difference]: Start difference. First operand 3206 states and 5510 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:59,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:53:59,307 INFO L93 Difference]: Finished difference Result 4406 states and 7255 transitions. [2023-12-21 21:53:59,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:53:59,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:53:59,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:53:59,318 INFO L225 Difference]: With dead ends: 4406 [2023-12-21 21:53:59,318 INFO L226 Difference]: Without dead ends: 3336 [2023-12-21 21:53:59,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:53:59,320 INFO L413 NwaCegarLoop]: 4211 mSDtfsCounter, 4578 mSDsluCounter, 8318 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4595 SdHoareTripleChecker+Valid, 12529 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:53:59,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4595 Valid, 12529 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:53:59,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2023-12-21 21:53:59,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 3336. [2023-12-21 21:53:59,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 3248 states have (on average 1.7142857142857142) internal successors, (5568), 3252 states have internal predecessors, (5568), 53 states have call successors, (53), 33 states have call predecessors, (53), 33 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2023-12-21 21:53:59,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 5673 transitions. [2023-12-21 21:53:59,438 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 5673 transitions. Word has length 132 [2023-12-21 21:53:59,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:53:59,438 INFO L495 AbstractCegarLoop]: Abstraction has 3336 states and 5673 transitions. [2023-12-21 21:53:59,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:53:59,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 5673 transitions. [2023-12-21 21:53:59,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:53:59,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:53:59,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:53:59,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-21 21:53:59,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:53:59,644 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:53:59,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:53:59,644 INFO L85 PathProgramCache]: Analyzing trace with hash -228853414, now seen corresponding path program 1 times [2023-12-21 21:53:59,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:53:59,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952008206] [2023-12-21 21:53:59,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:53:59,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:53:59,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:53:59,646 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:53:59,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-21 21:53:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:53:59,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:53:59,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:53:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:53:59,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:53:59,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:53:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952008206] [2023-12-21 21:53:59,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952008206] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:53:59,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:53:59,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:53:59,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369100938] [2023-12-21 21:53:59,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:53:59,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:53:59,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:53:59,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:53:59,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:53:59,809 INFO L87 Difference]: Start difference. First operand 3336 states and 5673 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:54:00,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:00,219 INFO L93 Difference]: Finished difference Result 4666 states and 7581 transitions. [2023-12-21 21:54:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:54:00,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:54:00,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:00,225 INFO L225 Difference]: With dead ends: 4666 [2023-12-21 21:54:00,225 INFO L226 Difference]: Without dead ends: 3466 [2023-12-21 21:54:00,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:54:00,229 INFO L413 NwaCegarLoop]: 4208 mSDtfsCounter, 4571 mSDsluCounter, 8314 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4588 SdHoareTripleChecker+Valid, 12522 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:00,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4588 Valid, 12522 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:54:00,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2023-12-21 21:54:00,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 3466. [2023-12-21 21:54:00,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3372 states have (on average 1.6972123368920522) internal successors, (5723), 3376 states have internal predecessors, (5723), 55 states have call successors, (55), 37 states have call predecessors, (55), 37 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2023-12-21 21:54:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 5832 transitions. [2023-12-21 21:54:00,299 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 5832 transitions. Word has length 132 [2023-12-21 21:54:00,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:00,300 INFO L495 AbstractCegarLoop]: Abstraction has 3466 states and 5832 transitions. [2023-12-21 21:54:00,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:54:00,300 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 5832 transitions. [2023-12-21 21:54:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:54:00,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:00,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:00,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:00,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:54:00,506 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:00,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:00,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1916401962, now seen corresponding path program 1 times [2023-12-21 21:54:00,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:00,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509677239] [2023-12-21 21:54:00,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:00,507 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 21:54:00,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:00,508 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:54:00,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-21 21:54:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:00,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:54:00,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:00,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:54:00,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:00,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:00,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509677239] [2023-12-21 21:54:00,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509677239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:00,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:00,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:00,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659296655] [2023-12-21 21:54:00,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:00,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:54:00,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:00,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:54:00,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:54:00,670 INFO L87 Difference]: Start difference. First operand 3466 states and 5832 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:54:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:01,085 INFO L93 Difference]: Finished difference Result 4926 states and 7899 transitions. [2023-12-21 21:54:01,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:54:01,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:54:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:01,092 INFO L225 Difference]: With dead ends: 4926 [2023-12-21 21:54:01,092 INFO L226 Difference]: Without dead ends: 3596 [2023-12-21 21:54:01,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:54:01,095 INFO L413 NwaCegarLoop]: 4205 mSDtfsCounter, 4564 mSDsluCounter, 8310 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4581 SdHoareTripleChecker+Valid, 12515 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:01,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4581 Valid, 12515 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:54:01,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2023-12-21 21:54:01,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 3596. [2023-12-21 21:54:01,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3596 states, 3496 states have (on average 1.6802059496567505) internal successors, (5874), 3500 states have internal predecessors, (5874), 57 states have call successors, (57), 41 states have call predecessors, (57), 41 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2023-12-21 21:54:01,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5987 transitions. [2023-12-21 21:54:01,168 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5987 transitions. Word has length 132 [2023-12-21 21:54:01,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:01,169 INFO L495 AbstractCegarLoop]: Abstraction has 3596 states and 5987 transitions. [2023-12-21 21:54:01,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:54:01,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5987 transitions. [2023-12-21 21:54:01,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:54:01,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:01,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:01,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:01,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:54:01,377 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:01,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:01,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1000757669, now seen corresponding path program 1 times [2023-12-21 21:54:01,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:01,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107831985] [2023-12-21 21:54:01,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:01,378 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 21:54:01,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:01,379 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:54:01,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-21 21:54:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:01,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:54:01,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:54:01,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:01,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:01,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107831985] [2023-12-21 21:54:01,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107831985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:01,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:01,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:01,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439430923] [2023-12-21 21:54:01,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:01,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:54:01,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:01,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:54:01,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:54:01,555 INFO L87 Difference]: Start difference. First operand 3596 states and 5987 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:54:01,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:01,986 INFO L93 Difference]: Finished difference Result 5186 states and 8209 transitions. [2023-12-21 21:54:01,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:54:01,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-21 21:54:01,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:01,993 INFO L225 Difference]: With dead ends: 5186 [2023-12-21 21:54:01,993 INFO L226 Difference]: Without dead ends: 3726 [2023-12-21 21:54:01,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:54:01,996 INFO L413 NwaCegarLoop]: 4202 mSDtfsCounter, 4556 mSDsluCounter, 8306 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4573 SdHoareTripleChecker+Valid, 12508 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:01,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4573 Valid, 12508 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:54:01,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3726 states. [2023-12-21 21:54:02,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3726 to 3726. [2023-12-21 21:54:02,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3726 states, 3620 states have (on average 1.6632596685082872) internal successors, (6021), 3624 states have internal predecessors, (6021), 59 states have call successors, (59), 45 states have call predecessors, (59), 45 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2023-12-21 21:54:02,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3726 states to 3726 states and 6138 transitions. [2023-12-21 21:54:02,076 INFO L78 Accepts]: Start accepts. Automaton has 3726 states and 6138 transitions. Word has length 132 [2023-12-21 21:54:02,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:02,076 INFO L495 AbstractCegarLoop]: Abstraction has 3726 states and 6138 transitions. [2023-12-21 21:54:02,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:54:02,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3726 states and 6138 transitions. [2023-12-21 21:54:02,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 21:54:02,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:02,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:02,082 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 (19)] Ended with exit code 0 [2023-12-21 21:54:02,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:54:02,282 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:02,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:02,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2083173408, now seen corresponding path program 1 times [2023-12-21 21:54:02,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:02,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912873628] [2023-12-21 21:54:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:02,283 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 21:54:02,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:02,284 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:54:02,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-21 21:54:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:02,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:54:02,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:54:02,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:02,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:02,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912873628] [2023-12-21 21:54:02,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912873628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:02,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:02,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:54:02,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831793429] [2023-12-21 21:54:02,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:02,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:54:02,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:02,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:54:02,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:54:02,509 INFO L87 Difference]: Start difference. First operand 3726 states and 6138 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 21:54:02,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:02,741 INFO L93 Difference]: Finished difference Result 6865 states and 10413 transitions. [2023-12-21 21:54:02,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:54:02,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 132 [2023-12-21 21:54:02,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:02,749 INFO L225 Difference]: With dead ends: 6865 [2023-12-21 21:54:02,749 INFO L226 Difference]: Without dead ends: 5276 [2023-12-21 21:54:02,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:54:02,752 INFO L413 NwaCegarLoop]: 4384 mSDtfsCounter, 4220 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4220 SdHoareTripleChecker+Valid, 4724 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:02,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4220 Valid, 4724 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:54:02,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5276 states. [2023-12-21 21:54:02,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5276 to 5274. [2023-12-21 21:54:02,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 5070 states have (on average 1.5725838264299803) internal successors, (7973), 5077 states have internal predecessors, (7973), 112 states have call successors, (112), 89 states have call predecessors, (112), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:54:02,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 8197 transitions. [2023-12-21 21:54:02,885 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 8197 transitions. Word has length 132 [2023-12-21 21:54:02,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:02,886 INFO L495 AbstractCegarLoop]: Abstraction has 5274 states and 8197 transitions. [2023-12-21 21:54:02,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 21:54:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 8197 transitions. [2023-12-21 21:54:02,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 21:54:02,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:02,889 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:02,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:03,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:54:03,095 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:03,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:03,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1664394849, now seen corresponding path program 1 times [2023-12-21 21:54:03,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:03,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081839393] [2023-12-21 21:54:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:03,096 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 21:54:03,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:03,097 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:54:03,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-21 21:54:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:03,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:54:03,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 21:54:03,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:03,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:03,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081839393] [2023-12-21 21:54:03,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081839393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:03,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:03,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:03,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033400609] [2023-12-21 21:54:03,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:03,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:54:03,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:03,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:54:03,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:03,259 INFO L87 Difference]: Start difference. First operand 5274 states and 8197 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:03,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:03,449 INFO L93 Difference]: Finished difference Result 9455 states and 13914 transitions. [2023-12-21 21:54:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:54:03,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 212 [2023-12-21 21:54:03,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:03,463 INFO L225 Difference]: With dead ends: 9455 [2023-12-21 21:54:03,463 INFO L226 Difference]: Without dead ends: 6318 [2023-12-21 21:54:03,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:03,471 INFO L413 NwaCegarLoop]: 4334 mSDtfsCounter, 83 mSDsluCounter, 8663 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 12997 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:03,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 12997 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:54:03,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6318 states. [2023-12-21 21:54:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6318 to 5310. [2023-12-21 21:54:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5310 states, 5106 states have (on average 1.5650215432824128) internal successors, (7991), 5113 states have internal predecessors, (7991), 112 states have call successors, (112), 89 states have call predecessors, (112), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:54:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5310 states to 5310 states and 8215 transitions. [2023-12-21 21:54:03,613 INFO L78 Accepts]: Start accepts. Automaton has 5310 states and 8215 transitions. Word has length 212 [2023-12-21 21:54:03,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:03,613 INFO L495 AbstractCegarLoop]: Abstraction has 5310 states and 8215 transitions. [2023-12-21 21:54:03,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:03,614 INFO L276 IsEmpty]: Start isEmpty. Operand 5310 states and 8215 transitions. [2023-12-21 21:54:03,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 21:54:03,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:03,616 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:03,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:03,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:54:03,822 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:03,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:03,822 INFO L85 PathProgramCache]: Analyzing trace with hash 283734501, now seen corresponding path program 1 times [2023-12-21 21:54:03,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:03,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086146743] [2023-12-21 21:54:03,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:03,822 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 21:54:03,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:03,823 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:54:03,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-21 21:54:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:03,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:54:03,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-21 21:54:03,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:03,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:03,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086146743] [2023-12-21 21:54:03,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086146743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:03,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:03,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:03,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030039745] [2023-12-21 21:54:03,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:03,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:54:03,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:03,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:54:03,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:03,968 INFO L87 Difference]: Start difference. First operand 5310 states and 8215 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:04,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:04,254 INFO L93 Difference]: Finished difference Result 8691 states and 12807 transitions. [2023-12-21 21:54:04,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:54:04,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 212 [2023-12-21 21:54:04,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:04,262 INFO L225 Difference]: With dead ends: 8691 [2023-12-21 21:54:04,262 INFO L226 Difference]: Without dead ends: 5518 [2023-12-21 21:54:04,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:04,268 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 74 mSDsluCounter, 8652 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 12984 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:04,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 12984 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:54:04,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5518 states. [2023-12-21 21:54:04,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5518 to 5318. [2023-12-21 21:54:04,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5318 states, 5114 states have (on average 1.5578803285099727) internal successors, (7967), 5121 states have internal predecessors, (7967), 112 states have call successors, (112), 89 states have call predecessors, (112), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:54:04,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 8191 transitions. [2023-12-21 21:54:04,397 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 8191 transitions. Word has length 212 [2023-12-21 21:54:04,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:04,397 INFO L495 AbstractCegarLoop]: Abstraction has 5318 states and 8191 transitions. [2023-12-21 21:54:04,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 8191 transitions. [2023-12-21 21:54:04,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 21:54:04,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:04,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:04,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:04,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:54:04,607 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:04,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:04,607 INFO L85 PathProgramCache]: Analyzing trace with hash 930907105, now seen corresponding path program 1 times [2023-12-21 21:54:04,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:04,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190511958] [2023-12-21 21:54:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:04,608 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 21:54:04,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:04,609 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:54:04,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-21 21:54:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:04,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:54:04,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 21:54:04,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:04,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:04,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190511958] [2023-12-21 21:54:04,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190511958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:04,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:04,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:04,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111100221] [2023-12-21 21:54:04,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:04,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:54:04,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:04,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:54:04,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:04,751 INFO L87 Difference]: Start difference. First operand 5318 states and 8191 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:04,924 INFO L93 Difference]: Finished difference Result 8683 states and 12727 transitions. [2023-12-21 21:54:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:54:04,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 212 [2023-12-21 21:54:04,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:04,932 INFO L225 Difference]: With dead ends: 8683 [2023-12-21 21:54:04,932 INFO L226 Difference]: Without dead ends: 5502 [2023-12-21 21:54:04,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:04,939 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 65 mSDsluCounter, 8653 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 12985 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:04,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 12985 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:54:04,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5502 states. [2023-12-21 21:54:05,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5502 to 5326. [2023-12-21 21:54:05,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5326 states, 5122 states have (on average 1.5507614213197969) internal successors, (7943), 5129 states have internal predecessors, (7943), 112 states have call successors, (112), 89 states have call predecessors, (112), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:54:05,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 8167 transitions. [2023-12-21 21:54:05,070 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 8167 transitions. Word has length 212 [2023-12-21 21:54:05,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:05,070 INFO L495 AbstractCegarLoop]: Abstraction has 5326 states and 8167 transitions. [2023-12-21 21:54:05,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:05,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 8167 transitions. [2023-12-21 21:54:05,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 21:54:05,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:05,073 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:05,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:05,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:54:05,278 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:05,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:05,278 INFO L85 PathProgramCache]: Analyzing trace with hash 59581541, now seen corresponding path program 1 times [2023-12-21 21:54:05,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:05,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28970249] [2023-12-21 21:54:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:05,279 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 21:54:05,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:05,280 INFO L229 MonitoredProcess]: Starting monitored process 24 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 21:54:05,281 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 (24)] Waiting until timeout for monitored process [2023-12-21 21:54:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:05,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:54:05,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 21:54:05,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:05,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:05,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28970249] [2023-12-21 21:54:05,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28970249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:05,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:05,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:05,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813797573] [2023-12-21 21:54:05,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:05,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:54:05,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:05,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:54:05,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:05,425 INFO L87 Difference]: Start difference. First operand 5326 states and 8167 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:05,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:05,675 INFO L93 Difference]: Finished difference Result 8675 states and 12647 transitions. [2023-12-21 21:54:05,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:54:05,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 212 [2023-12-21 21:54:05,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:05,683 INFO L225 Difference]: With dead ends: 8675 [2023-12-21 21:54:05,683 INFO L226 Difference]: Without dead ends: 5486 [2023-12-21 21:54:05,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:05,688 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 56 mSDsluCounter, 8654 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 12986 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:05,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 12986 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:54:05,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5486 states. [2023-12-21 21:54:05,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5486 to 5334. [2023-12-21 21:54:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5334 states, 5130 states have (on average 1.543664717348928) internal successors, (7919), 5137 states have internal predecessors, (7919), 112 states have call successors, (112), 89 states have call predecessors, (112), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:54:05,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5334 states to 5334 states and 8143 transitions. [2023-12-21 21:54:05,818 INFO L78 Accepts]: Start accepts. Automaton has 5334 states and 8143 transitions. Word has length 212 [2023-12-21 21:54:05,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:05,818 INFO L495 AbstractCegarLoop]: Abstraction has 5334 states and 8143 transitions. [2023-12-21 21:54:05,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:05,818 INFO L276 IsEmpty]: Start isEmpty. Operand 5334 states and 8143 transitions. [2023-12-21 21:54:05,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 21:54:05,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:05,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:05,826 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 (24)] Ended with exit code 0 [2023-12-21 21:54:06,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:06,027 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:06,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:06,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1661779615, now seen corresponding path program 1 times [2023-12-21 21:54:06,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:06,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087210410] [2023-12-21 21:54:06,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:06,028 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 21:54:06,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:06,029 INFO L229 MonitoredProcess]: Starting monitored process 25 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 21:54:06,040 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 (25)] Waiting until timeout for monitored process [2023-12-21 21:54:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:06,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:54:06,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-21 21:54:06,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:06,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:06,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087210410] [2023-12-21 21:54:06,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087210410] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:06,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:06,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:06,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142549564] [2023-12-21 21:54:06,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:06,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:54:06,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:54:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:06,181 INFO L87 Difference]: Start difference. First operand 5334 states and 8143 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:06,365 INFO L93 Difference]: Finished difference Result 8643 states and 12535 transitions. [2023-12-21 21:54:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:54:06,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 212 [2023-12-21 21:54:06,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:06,373 INFO L225 Difference]: With dead ends: 8643 [2023-12-21 21:54:06,373 INFO L226 Difference]: Without dead ends: 5446 [2023-12-21 21:54:06,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:06,380 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 38 mSDsluCounter, 8656 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 12988 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:06,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 12988 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:54:06,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2023-12-21 21:54:06,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 5342. [2023-12-21 21:54:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5138 states have (on average 1.5365901128843908) internal successors, (7895), 5145 states have internal predecessors, (7895), 112 states have call successors, (112), 89 states have call predecessors, (112), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:54:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 8119 transitions. [2023-12-21 21:54:06,509 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 8119 transitions. Word has length 212 [2023-12-21 21:54:06,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:06,509 INFO L495 AbstractCegarLoop]: Abstraction has 5342 states and 8119 transitions. [2023-12-21 21:54:06,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 8119 transitions. [2023-12-21 21:54:06,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 21:54:06,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:06,512 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:06,519 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 (25)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:06,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:06,718 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:06,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:06,718 INFO L85 PathProgramCache]: Analyzing trace with hash -663869091, now seen corresponding path program 1 times [2023-12-21 21:54:06,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:06,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180950811] [2023-12-21 21:54:06,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:06,719 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 21:54:06,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:06,719 INFO L229 MonitoredProcess]: Starting monitored process 26 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 21:54:06,721 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 (26)] Waiting until timeout for monitored process [2023-12-21 21:54:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:06,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:54:06,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:06,872 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 21:54:06,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:06,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:06,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180950811] [2023-12-21 21:54:06,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180950811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:06,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:06,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:06,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243629033] [2023-12-21 21:54:06,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:06,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:54:06,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:06,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:54:06,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:06,874 INFO L87 Difference]: Start difference. First operand 5342 states and 8119 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:07,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:07,048 INFO L93 Difference]: Finished difference Result 8635 states and 12455 transitions. [2023-12-21 21:54:07,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:54:07,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 212 [2023-12-21 21:54:07,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:07,055 INFO L225 Difference]: With dead ends: 8635 [2023-12-21 21:54:07,055 INFO L226 Difference]: Without dead ends: 5430 [2023-12-21 21:54:07,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:07,061 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 29 mSDsluCounter, 8657 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 12989 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:07,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 12989 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:54:07,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5430 states. [2023-12-21 21:54:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5430 to 5350. [2023-12-21 21:54:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5350 states, 5146 states have (on average 1.5295375048581423) internal successors, (7871), 5153 states have internal predecessors, (7871), 112 states have call successors, (112), 89 states have call predecessors, (112), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:54:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 8095 transitions. [2023-12-21 21:54:07,258 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 8095 transitions. Word has length 212 [2023-12-21 21:54:07,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:07,259 INFO L495 AbstractCegarLoop]: Abstraction has 5350 states and 8095 transitions. [2023-12-21 21:54:07,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:07,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 8095 transitions. [2023-12-21 21:54:07,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 21:54:07,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:07,262 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:07,269 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 (26)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:07,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:07,467 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:07,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:07,468 INFO L85 PathProgramCache]: Analyzing trace with hash -947309599, now seen corresponding path program 1 times [2023-12-21 21:54:07,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:07,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707999856] [2023-12-21 21:54:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:07,468 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 21:54:07,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:07,473 INFO L229 MonitoredProcess]: Starting monitored process 27 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 21:54:07,484 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 (27)] Waiting until timeout for monitored process [2023-12-21 21:54:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:07,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:54:07,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 21:54:07,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:07,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:07,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707999856] [2023-12-21 21:54:07,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707999856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:07,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:07,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:07,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184166647] [2023-12-21 21:54:07,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:07,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:54:07,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:07,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:54:07,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:07,625 INFO L87 Difference]: Start difference. First operand 5350 states and 8095 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:07,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:07,795 INFO L93 Difference]: Finished difference Result 8627 states and 12375 transitions. [2023-12-21 21:54:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:54:07,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 212 [2023-12-21 21:54:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:07,803 INFO L225 Difference]: With dead ends: 8627 [2023-12-21 21:54:07,803 INFO L226 Difference]: Without dead ends: 5414 [2023-12-21 21:54:07,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:07,810 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 20 mSDsluCounter, 8658 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12990 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:07,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 12990 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:54:07,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5414 states. [2023-12-21 21:54:07,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5414 to 5358. [2023-12-21 21:54:07,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5358 states, 5154 states have (on average 1.5225067908420644) internal successors, (7847), 5161 states have internal predecessors, (7847), 112 states have call successors, (112), 89 states have call predecessors, (112), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:54:07,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 8071 transitions. [2023-12-21 21:54:07,947 INFO L78 Accepts]: Start accepts. Automaton has 5358 states and 8071 transitions. Word has length 212 [2023-12-21 21:54:07,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:07,947 INFO L495 AbstractCegarLoop]: Abstraction has 5358 states and 8071 transitions. [2023-12-21 21:54:07,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:07,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5358 states and 8071 transitions. [2023-12-21 21:54:07,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 21:54:07,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:07,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:07,957 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 (27)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:08,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:08,157 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:08,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:08,158 INFO L85 PathProgramCache]: Analyzing trace with hash -410343715, now seen corresponding path program 1 times [2023-12-21 21:54:08,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:08,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935992949] [2023-12-21 21:54:08,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:08,158 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 21:54:08,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:08,159 INFO L229 MonitoredProcess]: Starting monitored process 28 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 21:54:08,180 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 (28)] Waiting until timeout for monitored process [2023-12-21 21:54:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:08,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:54:08,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 21:54:08,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:08,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:08,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935992949] [2023-12-21 21:54:08,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935992949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:08,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:08,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:08,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460893305] [2023-12-21 21:54:08,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:08,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:54:08,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:08,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:54:08,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:08,308 INFO L87 Difference]: Start difference. First operand 5358 states and 8071 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:08,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:08,475 INFO L93 Difference]: Finished difference Result 8939 states and 12718 transitions. [2023-12-21 21:54:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:54:08,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 212 [2023-12-21 21:54:08,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:08,484 INFO L225 Difference]: With dead ends: 8939 [2023-12-21 21:54:08,484 INFO L226 Difference]: Without dead ends: 5718 [2023-12-21 21:54:08,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:08,489 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 11 mSDsluCounter, 8659 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12991 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:08,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12991 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:54:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2023-12-21 21:54:08,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 5430. [2023-12-21 21:54:08,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5430 states, 5226 states have (on average 1.5153080750095675) internal successors, (7919), 5233 states have internal predecessors, (7919), 112 states have call successors, (112), 89 states have call predecessors, (112), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:54:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5430 states to 5430 states and 8143 transitions. [2023-12-21 21:54:08,689 INFO L78 Accepts]: Start accepts. Automaton has 5430 states and 8143 transitions. Word has length 212 [2023-12-21 21:54:08,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:08,689 INFO L495 AbstractCegarLoop]: Abstraction has 5430 states and 8143 transitions. [2023-12-21 21:54:08,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:08,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5430 states and 8143 transitions. [2023-12-21 21:54:08,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 21:54:08,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:08,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:08,699 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 (28)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:08,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:08,897 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:08,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:08,898 INFO L85 PathProgramCache]: Analyzing trace with hash -185317791, now seen corresponding path program 1 times [2023-12-21 21:54:08,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:08,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156399193] [2023-12-21 21:54:08,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:08,898 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 21:54:08,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:08,899 INFO L229 MonitoredProcess]: Starting monitored process 29 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 21:54:08,900 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 (29)] Waiting until timeout for monitored process [2023-12-21 21:54:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:09,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:54:09,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 21:54:09,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:09,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:09,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156399193] [2023-12-21 21:54:09,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156399193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:09,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:09,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:09,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957110175] [2023-12-21 21:54:09,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:09,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:54:09,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:09,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:54:09,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:09,037 INFO L87 Difference]: Start difference. First operand 5430 states and 8143 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:09,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:09,205 INFO L93 Difference]: Finished difference Result 8739 states and 12403 transitions. [2023-12-21 21:54:09,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:54:09,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 212 [2023-12-21 21:54:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:09,211 INFO L225 Difference]: With dead ends: 8739 [2023-12-21 21:54:09,211 INFO L226 Difference]: Without dead ends: 5446 [2023-12-21 21:54:09,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:09,214 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 2 mSDsluCounter, 8659 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12991 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:09,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12991 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:54:09,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2023-12-21 21:54:09,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 5438. [2023-12-21 21:54:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5438 states, 5234 states have (on average 1.5084065724111577) internal successors, (7895), 5241 states have internal predecessors, (7895), 112 states have call successors, (112), 89 states have call predecessors, (112), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:54:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5438 states to 5438 states and 8119 transitions. [2023-12-21 21:54:09,331 INFO L78 Accepts]: Start accepts. Automaton has 5438 states and 8119 transitions. Word has length 212 [2023-12-21 21:54:09,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:09,332 INFO L495 AbstractCegarLoop]: Abstraction has 5438 states and 8119 transitions. [2023-12-21 21:54:09,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:09,332 INFO L276 IsEmpty]: Start isEmpty. Operand 5438 states and 8119 transitions. [2023-12-21 21:54:09,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 21:54:09,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:09,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:09,341 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 (29)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:09,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:09,539 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:09,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:09,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1960967075, now seen corresponding path program 1 times [2023-12-21 21:54:09,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:09,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644891804] [2023-12-21 21:54:09,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:09,540 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 21:54:09,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:09,541 INFO L229 MonitoredProcess]: Starting monitored process 30 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 21:54:09,541 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 (30)] Waiting until timeout for monitored process [2023-12-21 21:54:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:09,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:54:09,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:09,789 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 21:54:09,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:09,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:09,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644891804] [2023-12-21 21:54:09,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644891804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:09,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:09,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:09,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568022196] [2023-12-21 21:54:09,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:09,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:54:09,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:09,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:54:09,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:54:09,791 INFO L87 Difference]: Start difference. First operand 5438 states and 8119 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:10,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:10,213 INFO L93 Difference]: Finished difference Result 8740 states and 12266 transitions. [2023-12-21 21:54:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:54:10,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 212 [2023-12-21 21:54:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:10,221 INFO L225 Difference]: With dead ends: 8740 [2023-12-21 21:54:10,221 INFO L226 Difference]: Without dead ends: 5438 [2023-12-21 21:54:10,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:54:10,225 INFO L413 NwaCegarLoop]: 4198 mSDtfsCounter, 4414 mSDsluCounter, 8302 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4430 SdHoareTripleChecker+Valid, 12500 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:10,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4430 Valid, 12500 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:54:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5438 states. [2023-12-21 21:54:10,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5438 to 5438. [2023-12-21 21:54:10,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5438 states, 5234 states have (on average 1.5057317539166986) internal successors, (7881), 5241 states have internal predecessors, (7881), 112 states have call successors, (112), 89 states have call predecessors, (112), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:54:10,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5438 states to 5438 states and 8105 transitions. [2023-12-21 21:54:10,416 INFO L78 Accepts]: Start accepts. Automaton has 5438 states and 8105 transitions. Word has length 212 [2023-12-21 21:54:10,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:10,416 INFO L495 AbstractCegarLoop]: Abstraction has 5438 states and 8105 transitions. [2023-12-21 21:54:10,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:10,416 INFO L276 IsEmpty]: Start isEmpty. Operand 5438 states and 8105 transitions. [2023-12-21 21:54:10,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 21:54:10,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:10,419 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:10,423 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 (30)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:10,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:10,623 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:10,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:10,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2001357083, now seen corresponding path program 1 times [2023-12-21 21:54:10,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:10,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849334302] [2023-12-21 21:54:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:10,624 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 21:54:10,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:10,625 INFO L229 MonitoredProcess]: Starting monitored process 31 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 21:54:10,630 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 (31)] Waiting until timeout for monitored process [2023-12-21 21:54:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:10,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:54:10,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:10,881 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 21:54:10,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:10,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:10,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849334302] [2023-12-21 21:54:10,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849334302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:10,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:10,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:10,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412220361] [2023-12-21 21:54:10,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:10,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:54:10,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:10,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:54:10,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:54:10,882 INFO L87 Difference]: Start difference. First operand 5438 states and 8105 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:11,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:11,483 INFO L93 Difference]: Finished difference Result 9094 states and 12687 transitions. [2023-12-21 21:54:11,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:54:11,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 212 [2023-12-21 21:54:11,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:11,490 INFO L225 Difference]: With dead ends: 9094 [2023-12-21 21:54:11,491 INFO L226 Difference]: Without dead ends: 5792 [2023-12-21 21:54:11,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:54:11,495 INFO L413 NwaCegarLoop]: 4197 mSDtfsCounter, 4543 mSDsluCounter, 8298 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4559 SdHoareTripleChecker+Valid, 12495 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:11,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4559 Valid, 12495 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:54:11,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5792 states. [2023-12-21 21:54:11,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5792 to 5672. [2023-12-21 21:54:11,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5672 states, 5456 states have (on average 1.4858870967741935) internal successors, (8107), 5463 states have internal predecessors, (8107), 116 states have call successors, (116), 97 states have call predecessors, (116), 98 states have return successors, (116), 112 states have call predecessors, (116), 114 states have call successors, (116) [2023-12-21 21:54:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5672 states to 5672 states and 8339 transitions. [2023-12-21 21:54:11,630 INFO L78 Accepts]: Start accepts. Automaton has 5672 states and 8339 transitions. Word has length 212 [2023-12-21 21:54:11,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:11,630 INFO L495 AbstractCegarLoop]: Abstraction has 5672 states and 8339 transitions. [2023-12-21 21:54:11,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:11,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5672 states and 8339 transitions. [2023-12-21 21:54:11,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 21:54:11,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:11,633 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:11,639 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 (31)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:11,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:11,837 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:11,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:11,838 INFO L85 PathProgramCache]: Analyzing trace with hash 28191705, now seen corresponding path program 1 times [2023-12-21 21:54:11,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:11,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656611077] [2023-12-21 21:54:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:11,838 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 21:54:11,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:11,839 INFO L229 MonitoredProcess]: Starting monitored process 32 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 21:54:11,840 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 (32)] Waiting until timeout for monitored process [2023-12-21 21:54:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:11,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:54:11,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 21:54:12,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:12,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:12,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656611077] [2023-12-21 21:54:12,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656611077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:12,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:12,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:12,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562089187] [2023-12-21 21:54:12,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:12,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:54:12,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:12,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:54:12,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:54:12,085 INFO L87 Difference]: Start difference. First operand 5672 states and 8339 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:12,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:12,667 INFO L93 Difference]: Finished difference Result 9422 states and 13009 transitions. [2023-12-21 21:54:12,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:54:12,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 212 [2023-12-21 21:54:12,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:12,674 INFO L225 Difference]: With dead ends: 9422 [2023-12-21 21:54:12,674 INFO L226 Difference]: Without dead ends: 5886 [2023-12-21 21:54:12,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:54:12,678 INFO L413 NwaCegarLoop]: 4194 mSDtfsCounter, 4469 mSDsluCounter, 8294 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4485 SdHoareTripleChecker+Valid, 12488 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:12,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4485 Valid, 12488 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:54:12,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2023-12-21 21:54:12,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 5846. [2023-12-21 21:54:12,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5846 states, 5626 states have (on average 1.4633842872378244) internal successors, (8233), 5633 states have internal predecessors, (8233), 116 states have call successors, (116), 101 states have call predecessors, (116), 102 states have return successors, (116), 112 states have call predecessors, (116), 114 states have call successors, (116) [2023-12-21 21:54:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5846 states to 5846 states and 8465 transitions. [2023-12-21 21:54:12,816 INFO L78 Accepts]: Start accepts. Automaton has 5846 states and 8465 transitions. Word has length 212 [2023-12-21 21:54:12,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:12,816 INFO L495 AbstractCegarLoop]: Abstraction has 5846 states and 8465 transitions. [2023-12-21 21:54:12,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5846 states and 8465 transitions. [2023-12-21 21:54:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 21:54:12,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:12,818 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:12,822 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 (32)] Ended with exit code 0 [2023-12-21 21:54:13,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:13,022 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:13,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:13,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1925688471, now seen corresponding path program 1 times [2023-12-21 21:54:13,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:13,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875350448] [2023-12-21 21:54:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:13,023 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 21:54:13,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:13,025 INFO L229 MonitoredProcess]: Starting monitored process 33 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 21:54:13,025 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 (33)] Waiting until timeout for monitored process [2023-12-21 21:54:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:13,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:54:13,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 21:54:13,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:13,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:13,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875350448] [2023-12-21 21:54:13,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875350448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:13,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:13,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:13,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416515712] [2023-12-21 21:54:13,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:13,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:54:13,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:13,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:54:13,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:13,326 INFO L87 Difference]: Start difference. First operand 5846 states and 8465 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:54:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:13,886 INFO L93 Difference]: Finished difference Result 13156 states and 17289 transitions. [2023-12-21 21:54:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:54:13,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 212 [2023-12-21 21:54:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:13,900 INFO L225 Difference]: With dead ends: 13156 [2023-12-21 21:54:13,900 INFO L226 Difference]: Without dead ends: 9448 [2023-12-21 21:54:13,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:54:13,907 INFO L413 NwaCegarLoop]: 4410 mSDtfsCounter, 4472 mSDsluCounter, 4564 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4476 SdHoareTripleChecker+Valid, 8974 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:13,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4476 Valid, 8974 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:54:13,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9448 states. [2023-12-21 21:54:14,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9448 to 9444. [2023-12-21 21:54:14,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9444 states, 9017 states have (on average 1.3668625928801152) internal successors, (12325), 9033 states have internal predecessors, (12325), 221 states have call successors, (221), 193 states have call predecessors, (221), 204 states have return successors, (243), 219 states have call predecessors, (243), 219 states have call successors, (243) [2023-12-21 21:54:14,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9444 states to 9444 states and 12789 transitions. [2023-12-21 21:54:14,230 INFO L78 Accepts]: Start accepts. Automaton has 9444 states and 12789 transitions. Word has length 212 [2023-12-21 21:54:14,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:14,230 INFO L495 AbstractCegarLoop]: Abstraction has 9444 states and 12789 transitions. [2023-12-21 21:54:14,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:54:14,230 INFO L276 IsEmpty]: Start isEmpty. Operand 9444 states and 12789 transitions. [2023-12-21 21:54:14,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 21:54:14,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:14,234 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:14,238 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 (33)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:14,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:14,438 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:14,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:14,438 INFO L85 PathProgramCache]: Analyzing trace with hash 789744025, now seen corresponding path program 1 times [2023-12-21 21:54:14,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:14,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733120934] [2023-12-21 21:54:14,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:14,439 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 21:54:14,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:14,440 INFO L229 MonitoredProcess]: Starting monitored process 34 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 21:54:14,446 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 (34)] Waiting until timeout for monitored process [2023-12-21 21:54:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:14,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:54:14,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:14,589 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-21 21:54:14,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:14,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:14,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733120934] [2023-12-21 21:54:14,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733120934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:14,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:14,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:54:14,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447189976] [2023-12-21 21:54:14,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:14,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:54:14,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:14,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:54:14,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:54:14,591 INFO L87 Difference]: Start difference. First operand 9444 states and 12789 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:14,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:14,850 INFO L93 Difference]: Finished difference Result 16738 states and 21568 transitions. [2023-12-21 21:54:14,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:54:14,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 212 [2023-12-21 21:54:14,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:14,863 INFO L225 Difference]: With dead ends: 16738 [2023-12-21 21:54:14,863 INFO L226 Difference]: Without dead ends: 9432 [2023-12-21 21:54:14,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:54:14,872 INFO L413 NwaCegarLoop]: 4322 mSDtfsCounter, 394 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 8279 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:14,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 8279 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:54:14,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9432 states. [2023-12-21 21:54:15,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9432 to 9432. [2023-12-21 21:54:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9432 states, 9008 states have (on average 1.3663410301953818) internal successors, (12308), 9023 states have internal predecessors, (12308), 218 states have call successors, (218), 193 states have call predecessors, (218), 204 states have return successors, (240), 216 states have call predecessors, (240), 216 states have call successors, (240) [2023-12-21 21:54:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9432 states to 9432 states and 12766 transitions. [2023-12-21 21:54:15,221 INFO L78 Accepts]: Start accepts. Automaton has 9432 states and 12766 transitions. Word has length 212 [2023-12-21 21:54:15,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:15,222 INFO L495 AbstractCegarLoop]: Abstraction has 9432 states and 12766 transitions. [2023-12-21 21:54:15,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:15,222 INFO L276 IsEmpty]: Start isEmpty. Operand 9432 states and 12766 transitions. [2023-12-21 21:54:15,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-21 21:54:15,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:15,225 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:15,230 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 (34)] Ended with exit code 0 [2023-12-21 21:54:15,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:15,426 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:15,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:15,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1263328860, now seen corresponding path program 1 times [2023-12-21 21:54:15,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:15,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9079231] [2023-12-21 21:54:15,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:15,427 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 21:54:15,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:15,428 INFO L229 MonitoredProcess]: Starting monitored process 35 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 21:54:15,428 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 (35)] Waiting until timeout for monitored process [2023-12-21 21:54:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:15,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:54:15,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 21:54:15,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:15,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:15,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9079231] [2023-12-21 21:54:15,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9079231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:15,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:15,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:15,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642409413] [2023-12-21 21:54:15,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:15,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:54:15,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:15,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:54:15,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:15,737 INFO L87 Difference]: Start difference. First operand 9432 states and 12766 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:54:16,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:16,553 INFO L93 Difference]: Finished difference Result 23599 states and 29816 transitions. [2023-12-21 21:54:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:54:16,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 214 [2023-12-21 21:54:16,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:16,573 INFO L225 Difference]: With dead ends: 23599 [2023-12-21 21:54:16,574 INFO L226 Difference]: Without dead ends: 16305 [2023-12-21 21:54:16,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:54:16,582 INFO L413 NwaCegarLoop]: 4393 mSDtfsCounter, 4467 mSDsluCounter, 4546 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 8939 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:16,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4472 Valid, 8939 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:54:16,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16305 states. [2023-12-21 21:54:17,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16305 to 16301. [2023-12-21 21:54:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16301 states, 15482 states have (on average 1.2989277871076088) internal successors, (20110), 15514 states have internal predecessors, (20110), 417 states have call successors, (417), 369 states have call predecessors, (417), 400 states have return successors, (483), 419 states have call predecessors, (483), 415 states have call successors, (483) [2023-12-21 21:54:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16301 states to 16301 states and 21010 transitions. [2023-12-21 21:54:17,139 INFO L78 Accepts]: Start accepts. Automaton has 16301 states and 21010 transitions. Word has length 214 [2023-12-21 21:54:17,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:17,139 INFO L495 AbstractCegarLoop]: Abstraction has 16301 states and 21010 transitions. [2023-12-21 21:54:17,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:54:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 16301 states and 21010 transitions. [2023-12-21 21:54:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-21 21:54:17,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:17,145 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:17,150 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 (35)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:17,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:17,350 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:17,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:17,350 INFO L85 PathProgramCache]: Analyzing trace with hash 408789402, now seen corresponding path program 1 times [2023-12-21 21:54:17,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:17,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186049295] [2023-12-21 21:54:17,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:17,351 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 21:54:17,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:17,352 INFO L229 MonitoredProcess]: Starting monitored process 36 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 21:54:17,352 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 (36)] Waiting until timeout for monitored process [2023-12-21 21:54:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:17,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:54:17,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-21 21:54:17,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:17,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:17,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186049295] [2023-12-21 21:54:17,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186049295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:17,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:17,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:54:17,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361825939] [2023-12-21 21:54:17,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:17,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:54:17,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:17,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:54:17,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:54:17,484 INFO L87 Difference]: Start difference. First operand 16301 states and 21010 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:18,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:18,054 INFO L93 Difference]: Finished difference Result 30453 states and 38013 transitions. [2023-12-21 21:54:18,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:54:18,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 214 [2023-12-21 21:54:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:18,077 INFO L225 Difference]: With dead ends: 30453 [2023-12-21 21:54:18,077 INFO L226 Difference]: Without dead ends: 16290 [2023-12-21 21:54:18,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:54:18,089 INFO L413 NwaCegarLoop]: 4321 mSDtfsCounter, 392 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 8278 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:18,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 8278 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:54:18,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16290 states. [2023-12-21 21:54:18,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16290 to 16290. [2023-12-21 21:54:18,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16290 states, 15474 states have (on average 1.2986299599327904) internal successors, (20095), 15505 states have internal predecessors, (20095), 414 states have call successors, (414), 369 states have call predecessors, (414), 400 states have return successors, (480), 416 states have call predecessors, (480), 412 states have call successors, (480) [2023-12-21 21:54:18,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16290 states to 16290 states and 20989 transitions. [2023-12-21 21:54:18,658 INFO L78 Accepts]: Start accepts. Automaton has 16290 states and 20989 transitions. Word has length 214 [2023-12-21 21:54:18,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:18,658 INFO L495 AbstractCegarLoop]: Abstraction has 16290 states and 20989 transitions. [2023-12-21 21:54:18,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:18,659 INFO L276 IsEmpty]: Start isEmpty. Operand 16290 states and 20989 transitions. [2023-12-21 21:54:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-21 21:54:18,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:18,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:18,671 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 (36)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:18,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:18,865 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:18,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:18,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1221030871, now seen corresponding path program 1 times [2023-12-21 21:54:18,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:18,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455122926] [2023-12-21 21:54:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:18,866 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 21:54:18,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:18,867 INFO L229 MonitoredProcess]: Starting monitored process 37 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 21:54:18,868 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 (37)] Waiting until timeout for monitored process [2023-12-21 21:54:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:18,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:54:18,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 21:54:19,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:19,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:19,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455122926] [2023-12-21 21:54:19,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455122926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:19,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:19,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:19,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901115874] [2023-12-21 21:54:19,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:19,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:54:19,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:19,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:54:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:19,190 INFO L87 Difference]: Start difference. First operand 16290 states and 20989 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:54:20,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:20,517 INFO L93 Difference]: Finished difference Result 43746 states and 53971 transitions. [2023-12-21 21:54:20,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:54:20,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 216 [2023-12-21 21:54:20,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:20,558 INFO L225 Difference]: With dead ends: 43746 [2023-12-21 21:54:20,558 INFO L226 Difference]: Without dead ends: 29594 [2023-12-21 21:54:20,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:54:20,570 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 4481 mSDsluCounter, 4406 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4487 SdHoareTripleChecker+Valid, 8638 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:20,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4487 Valid, 8638 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:54:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29594 states. [2023-12-21 21:54:21,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29594 to 29590. [2023-12-21 21:54:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29590 states, 28014 states have (on average 1.2561933319054759) internal successors, (35191), 28081 states have internal predecessors, (35191), 790 states have call successors, (790), 705 states have call predecessors, (790), 784 states have return successors, (952), 804 states have call predecessors, (952), 788 states have call successors, (952) [2023-12-21 21:54:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29590 states to 29590 states and 36933 transitions. [2023-12-21 21:54:21,629 INFO L78 Accepts]: Start accepts. Automaton has 29590 states and 36933 transitions. Word has length 216 [2023-12-21 21:54:21,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:21,630 INFO L495 AbstractCegarLoop]: Abstraction has 29590 states and 36933 transitions. [2023-12-21 21:54:21,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:54:21,630 INFO L276 IsEmpty]: Start isEmpty. Operand 29590 states and 36933 transitions. [2023-12-21 21:54:21,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-21 21:54:21,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:21,641 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:21,648 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 (37)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:21,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:21,846 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:21,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:21,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1438589220, now seen corresponding path program 1 times [2023-12-21 21:54:21,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:21,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954515710] [2023-12-21 21:54:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:21,891 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 21:54:21,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:21,892 INFO L229 MonitoredProcess]: Starting monitored process 38 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 21:54:21,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-21 21:54:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:22,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:54:22,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 21:54:22,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:22,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:22,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954515710] [2023-12-21 21:54:22,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954515710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:22,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:22,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:22,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639062838] [2023-12-21 21:54:22,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:22,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:54:22,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:22,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:54:22,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:22,197 INFO L87 Difference]: Start difference. First operand 29590 states and 36933 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:54:24,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:24,455 INFO L93 Difference]: Finished difference Result 93875 states and 113741 transitions. [2023-12-21 21:54:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:54:24,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 218 [2023-12-21 21:54:24,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:24,546 INFO L225 Difference]: With dead ends: 93875 [2023-12-21 21:54:24,546 INFO L226 Difference]: Without dead ends: 66423 [2023-12-21 21:54:24,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:54:24,564 INFO L413 NwaCegarLoop]: 4385 mSDtfsCounter, 4467 mSDsluCounter, 4522 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4473 SdHoareTripleChecker+Valid, 8907 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:24,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4473 Valid, 8907 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:54:24,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66423 states. [2023-12-21 21:54:26,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66423 to 65203. [2023-12-21 21:54:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65203 states, 61608 states have (on average 1.2229905207115959) internal successors, (75346), 62044 states have internal predecessors, (75346), 1513 states have call successors, (1513), 1345 states have call predecessors, (1513), 2080 states have return successors, (2444), 1815 states have call predecessors, (2444), 1511 states have call successors, (2444) [2023-12-21 21:54:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65203 states to 65203 states and 79303 transitions. [2023-12-21 21:54:26,973 INFO L78 Accepts]: Start accepts. Automaton has 65203 states and 79303 transitions. Word has length 218 [2023-12-21 21:54:26,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:26,973 INFO L495 AbstractCegarLoop]: Abstraction has 65203 states and 79303 transitions. [2023-12-21 21:54:26,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:54:26,974 INFO L276 IsEmpty]: Start isEmpty. Operand 65203 states and 79303 transitions. [2023-12-21 21:54:26,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-21 21:54:26,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:26,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:27,002 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 (38)] Ended with exit code 0 [2023-12-21 21:54:27,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:27,199 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:27,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:27,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1982712474, now seen corresponding path program 1 times [2023-12-21 21:54:27,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:27,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517025819] [2023-12-21 21:54:27,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:27,200 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 21:54:27,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:27,201 INFO L229 MonitoredProcess]: Starting monitored process 39 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 21:54:27,201 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 (39)] Waiting until timeout for monitored process [2023-12-21 21:54:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:27,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:54:27,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-21 21:54:27,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:27,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:27,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517025819] [2023-12-21 21:54:27,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517025819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:27,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:27,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:54:27,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492950976] [2023-12-21 21:54:27,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:27,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:54:27,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:27,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:54:27,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:54:27,352 INFO L87 Difference]: Start difference. First operand 65203 states and 79303 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:29,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:29,756 INFO L93 Difference]: Finished difference Result 128260 states and 154604 transitions. [2023-12-21 21:54:29,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:54:29,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 218 [2023-12-21 21:54:29,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:29,867 INFO L225 Difference]: With dead ends: 128260 [2023-12-21 21:54:29,867 INFO L226 Difference]: Without dead ends: 65194 [2023-12-21 21:54:29,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:54:29,913 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 389 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 8277 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:29,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 8277 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:54:29,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65194 states. [2023-12-21 21:54:32,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65194 to 65194. [2023-12-21 21:54:32,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65194 states, 61602 states have (on average 1.222914840427259) internal successors, (75334), 62037 states have internal predecessors, (75334), 1510 states have call successors, (1510), 1345 states have call predecessors, (1510), 2080 states have return successors, (2440), 1812 states have call predecessors, (2440), 1508 states have call successors, (2440) [2023-12-21 21:54:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65194 states to 65194 states and 79284 transitions. [2023-12-21 21:54:32,378 INFO L78 Accepts]: Start accepts. Automaton has 65194 states and 79284 transitions. Word has length 218 [2023-12-21 21:54:32,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:32,378 INFO L495 AbstractCegarLoop]: Abstraction has 65194 states and 79284 transitions. [2023-12-21 21:54:32,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:32,379 INFO L276 IsEmpty]: Start isEmpty. Operand 65194 states and 79284 transitions. [2023-12-21 21:54:32,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-21 21:54:32,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:32,397 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:32,403 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 (39)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:32,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:32,597 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:32,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:32,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1156701417, now seen corresponding path program 1 times [2023-12-21 21:54:32,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:32,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031771849] [2023-12-21 21:54:32,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:32,598 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 21:54:32,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:32,599 INFO L229 MonitoredProcess]: Starting monitored process 40 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 21:54:32,600 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 (40)] Waiting until timeout for monitored process [2023-12-21 21:54:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:32,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:54:32,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:33,065 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 21:54:33,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:33,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:33,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031771849] [2023-12-21 21:54:33,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031771849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:33,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:33,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:33,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560294261] [2023-12-21 21:54:33,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:33,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:54:33,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:33,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:54:33,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:33,067 INFO L87 Difference]: Start difference. First operand 65194 states and 79284 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:54:37,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:37,157 INFO L93 Difference]: Finished difference Result 186338 states and 223841 transitions. [2023-12-21 21:54:37,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:54:37,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 220 [2023-12-21 21:54:37,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:37,377 INFO L225 Difference]: With dead ends: 186338 [2023-12-21 21:54:37,377 INFO L226 Difference]: Without dead ends: 123282 [2023-12-21 21:54:37,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:54:37,426 INFO L413 NwaCegarLoop]: 4352 mSDtfsCounter, 4446 mSDsluCounter, 4493 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4452 SdHoareTripleChecker+Valid, 8845 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:37,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4452 Valid, 8845 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:54:37,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123282 states. [2023-12-21 21:54:42,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123282 to 123278. [2023-12-21 21:54:42,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123278 states, 116355 states have (on average 1.2101499720682394) internal successors, (140807), 117223 states have internal predecessors, (140807), 2889 states have call successors, (2889), 2561 states have call predecessors, (2889), 4032 states have return successors, (4763), 3495 states have call predecessors, (4763), 2887 states have call successors, (4763) [2023-12-21 21:54:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123278 states to 123278 states and 148459 transitions. [2023-12-21 21:54:42,387 INFO L78 Accepts]: Start accepts. Automaton has 123278 states and 148459 transitions. Word has length 220 [2023-12-21 21:54:42,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:42,387 INFO L495 AbstractCegarLoop]: Abstraction has 123278 states and 148459 transitions. [2023-12-21 21:54:42,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:54:42,388 INFO L276 IsEmpty]: Start isEmpty. Operand 123278 states and 148459 transitions. [2023-12-21 21:54:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-21 21:54:42,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:42,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:42,433 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 (40)] Forceful destruction successful, exit code 0 [2023-12-21 21:54:42,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:42,633 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:42,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:42,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1824435993, now seen corresponding path program 1 times [2023-12-21 21:54:42,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:42,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283636797] [2023-12-21 21:54:42,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:42,634 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 21:54:42,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:42,635 INFO L229 MonitoredProcess]: Starting monitored process 41 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 21:54:42,635 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 (41)] Waiting until timeout for monitored process [2023-12-21 21:54:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:42,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:54:42,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-21 21:54:42,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:42,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:42,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283636797] [2023-12-21 21:54:42,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283636797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:42,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:42,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:54:42,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724801944] [2023-12-21 21:54:42,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:42,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:54:42,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:42,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:54:42,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:54:42,773 INFO L87 Difference]: Start difference. First operand 123278 states and 148459 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:47,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:54:47,189 INFO L93 Difference]: Finished difference Result 244410 states and 292918 transitions. [2023-12-21 21:54:47,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:54:47,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 220 [2023-12-21 21:54:47,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:54:47,421 INFO L225 Difference]: With dead ends: 244410 [2023-12-21 21:54:47,421 INFO L226 Difference]: Without dead ends: 123270 [2023-12-21 21:54:47,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:54:47,506 INFO L413 NwaCegarLoop]: 4319 mSDtfsCounter, 387 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 8276 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:54:47,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 8276 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:54:47,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123270 states. [2023-12-21 21:54:52,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123270 to 123270. [2023-12-21 21:54:52,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123270 states, 116350 states have (on average 1.2101160292221744) internal successors, (140797), 117217 states have internal predecessors, (140797), 2886 states have call successors, (2886), 2561 states have call predecessors, (2886), 4032 states have return successors, (4760), 3492 states have call predecessors, (4760), 2884 states have call successors, (4760) [2023-12-21 21:54:52,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123270 states to 123270 states and 148443 transitions. [2023-12-21 21:54:52,336 INFO L78 Accepts]: Start accepts. Automaton has 123270 states and 148443 transitions. Word has length 220 [2023-12-21 21:54:52,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:54:52,336 INFO L495 AbstractCegarLoop]: Abstraction has 123270 states and 148443 transitions. [2023-12-21 21:54:52,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:54:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 123270 states and 148443 transitions. [2023-12-21 21:54:52,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-21 21:54:52,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:54:52,372 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:54:52,376 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 (41)] Ended with exit code 0 [2023-12-21 21:54:52,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:54:52,573 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:54:52,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:54:52,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2070735012, now seen corresponding path program 1 times [2023-12-21 21:54:52,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:54:52,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039215185] [2023-12-21 21:54:52,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:54:52,574 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 21:54:52,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:54:52,575 INFO L229 MonitoredProcess]: Starting monitored process 42 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 21:54:52,576 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 (42)] Waiting until timeout for monitored process [2023-12-21 21:54:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:54:52,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:54:52,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:54:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 21:54:52,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:54:52,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:54:52,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039215185] [2023-12-21 21:54:52,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039215185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:54:52,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:54:52,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:54:52,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104332132] [2023-12-21 21:54:52,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:54:52,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:54:52,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:54:52,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:54:52,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:54:52,890 INFO L87 Difference]: Start difference. First operand 123270 states and 148443 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:55:01,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:01,090 INFO L93 Difference]: Finished difference Result 355929 states and 425630 transitions. [2023-12-21 21:55:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:55:01,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 222 [2023-12-21 21:55:01,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:01,730 INFO L225 Difference]: With dead ends: 355929 [2023-12-21 21:55:01,731 INFO L226 Difference]: Without dead ends: 234797 [2023-12-21 21:55:01,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:01,830 INFO L413 NwaCegarLoop]: 4338 mSDtfsCounter, 4440 mSDsluCounter, 4475 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 8813 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:01,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4446 Valid, 8813 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:55:01,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234797 states. [2023-12-21 21:55:10,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234797 to 234793. [2023-12-21 21:55:10,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234793 states, 221406 states have (on average 1.2021896425571124) internal successors, (266172), 223170 states have internal predecessors, (266172), 5513 states have call successors, (5513), 4865 states have call predecessors, (5513), 7872 states have return successors, (9339), 6759 states have call predecessors, (9339), 5511 states have call successors, (9339) [2023-12-21 21:55:11,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234793 states to 234793 states and 281024 transitions. [2023-12-21 21:55:11,392 INFO L78 Accepts]: Start accepts. Automaton has 234793 states and 281024 transitions. Word has length 222 [2023-12-21 21:55:11,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:11,393 INFO L495 AbstractCegarLoop]: Abstraction has 234793 states and 281024 transitions. [2023-12-21 21:55:11,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:55:11,393 INFO L276 IsEmpty]: Start isEmpty. Operand 234793 states and 281024 transitions. [2023-12-21 21:55:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-21 21:55:11,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:11,468 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:11,477 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 (42)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:11,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:55:11,669 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:11,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:11,669 INFO L85 PathProgramCache]: Analyzing trace with hash 150211482, now seen corresponding path program 1 times [2023-12-21 21:55:11,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:11,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868186178] [2023-12-21 21:55:11,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:11,670 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 21:55:11,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:11,671 INFO L229 MonitoredProcess]: Starting monitored process 43 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 21:55:11,672 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 (43)] Waiting until timeout for monitored process [2023-12-21 21:55:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:11,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:55:11,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-21 21:55:11,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:11,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:11,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868186178] [2023-12-21 21:55:11,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868186178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:11,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:11,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:55:11,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381834470] [2023-12-21 21:55:11,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:11,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:55:11,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:11,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:55:11,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:11,813 INFO L87 Difference]: Start difference. First operand 234793 states and 281024 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)