/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_label41+token_ring.12.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 21:45:09,260 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 21:45:09,330 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 21:45:09,335 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 21:45:09,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 21:45:09,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 21:45:09,357 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 21:45:09,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 21:45:09,357 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 21:45:09,360 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 21:45:09,360 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 21:45:09,361 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 21:45:09,361 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 21:45:09,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 21:45:09,362 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 21:45:09,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 21:45:09,363 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 21:45:09,363 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 21:45:09,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 21:45:09,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 21:45:09,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 21:45:09,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 21:45:09,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 21:45:09,364 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 21:45:09,364 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 21:45:09,364 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 21:45:09,364 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 21:45:09,364 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 21:45:09,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 21:45:09,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 21:45:09,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 21:45:09,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 21:45:09,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 21:45:09,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 21:45:09,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:45:09,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 21:45:09,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 21:45:09,366 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 21:45:09,366 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 21:45:09,366 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 21:45:09,366 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 21:45:09,367 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 21:45:09,367 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 21:45:09,367 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 21:45:09,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 21:45:09,368 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 21:45:09,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 21:45:09,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 21:45:09,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 21:45:09,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 21:45:09,585 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 21:45:09,585 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 21:45:09,587 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.12.cil-2.c [2023-12-21 21:45:10,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 21:45:11,109 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 21:45:11,109 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.12.cil-2.c [2023-12-21 21:45:11,158 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4505e0e90/e7f9cf0055e540558c22623e93894725/FLAG702b402ea [2023-12-21 21:45:11,171 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4505e0e90/e7f9cf0055e540558c22623e93894725 [2023-12-21 21:45:11,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 21:45:11,175 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 21:45:11,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 21:45:11,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 21:45:11,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 21:45:11,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:45:11" (1/1) ... [2023-12-21 21:45:11,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fad99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:11, skipping insertion in model container [2023-12-21 21:45:11,182 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:45:11" (1/1) ... [2023-12-21 21:45:11,372 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 21:45:12,609 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_label41+token_ring.12.cil-2.c[376251,376264] [2023-12-21 21:45:12,630 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_label41+token_ring.12.cil-2.c[383339,383352] [2023-12-21 21:45:12,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:45:12,869 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 21:45:13,433 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_label41+token_ring.12.cil-2.c[376251,376264] [2023-12-21 21:45:13,441 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_label41+token_ring.12.cil-2.c[383339,383352] [2023-12-21 21:45:13,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:45:13,562 INFO L206 MainTranslator]: Completed translation [2023-12-21 21:45:13,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:13 WrapperNode [2023-12-21 21:45:13,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 21:45:13,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 21:45:13,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 21:45:13,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 21:45:13,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:13" (1/1) ... [2023-12-21 21:45:13,628 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:13" (1/1) ... [2023-12-21 21:45:13,839 INFO L138 Inliner]: procedures = 69, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13191 [2023-12-21 21:45:13,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 21:45:13,840 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 21:45:13,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 21:45:13,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 21:45:13,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:13" (1/1) ... [2023-12-21 21:45:13,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:13" (1/1) ... [2023-12-21 21:45:13,898 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:13" (1/1) ... [2023-12-21 21:45:14,088 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 21:45:14,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:13" (1/1) ... [2023-12-21 21:45:14,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:13" (1/1) ... [2023-12-21 21:45:14,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:13" (1/1) ... [2023-12-21 21:45:14,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:13" (1/1) ... [2023-12-21 21:45:14,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:13" (1/1) ... [2023-12-21 21:45:14,366 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:13" (1/1) ... [2023-12-21 21:45:14,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 21:45:14,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 21:45:14,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 21:45:14,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 21:45:14,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:13" (1/1) ... [2023-12-21 21:45:14,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:45:14,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 21:45:14,493 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 21:45:14,512 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 21:45:14,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 21:45:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 21:45:14,516 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 21:45:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 21:45:14,516 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 21:45:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 21:45:14,516 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 21:45:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 21:45:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 21:45:14,516 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 21:45:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 21:45:14,516 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 21:45:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 21:45:14,517 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 21:45:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 21:45:14,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 21:45:14,609 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 21:45:14,611 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 21:45:22,311 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 21:45:22,402 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 21:45:22,403 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-12-21 21:45:22,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:45:22 BoogieIcfgContainer [2023-12-21 21:45:22,403 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 21:45:22,407 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 21:45:22,407 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 21:45:22,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 21:45:22,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:45:11" (1/3) ... [2023-12-21 21:45:22,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6c60c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:45:22, skipping insertion in model container [2023-12-21 21:45:22,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:45:13" (2/3) ... [2023-12-21 21:45:22,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6c60c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:45:22, skipping insertion in model container [2023-12-21 21:45:22,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:45:22" (3/3) ... [2023-12-21 21:45:22,411 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.12.cil-2.c [2023-12-21 21:45:22,424 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 21:45:22,424 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 21:45:22,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 21:45:22,507 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;@48e6e019, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 21:45:22,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 21:45:22,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 2471 states, 2436 states have (on average 1.875615763546798) internal successors, (4569), 2439 states have internal predecessors, (4569), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 21:45:22,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:22,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:22,544 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, 1, 1, 1, 1, 1, 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 21:45:22,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:22,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:22,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1395407095, now seen corresponding path program 1 times [2023-12-21 21:45:22,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:22,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583428891] [2023-12-21 21:45:22,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:22,563 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 21:45:22,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:22,566 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 21:45:22,578 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 21:45:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:22,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:45:22,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:22,913 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 21:45:22,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:22,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:22,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583428891] [2023-12-21 21:45:22,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583428891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:22,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:22,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:45:22,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965070819] [2023-12-21 21:45:22,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:22,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:45:22,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:22,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:45:22,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:45:22,959 INFO L87 Difference]: Start difference. First operand has 2471 states, 2436 states have (on average 1.875615763546798) internal successors, (4569), 2439 states have internal predecessors, (4569), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:23,115 INFO L93 Difference]: Finished difference Result 4938 states and 9233 transitions. [2023-12-21 21:45:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:45:23,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:23,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:23,133 INFO L225 Difference]: With dead ends: 4938 [2023-12-21 21:45:23,133 INFO L226 Difference]: Without dead ends: 2467 [2023-12-21 21:45:23,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 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 21:45:23,142 INFO L413 NwaCegarLoop]: 4479 mSDtfsCounter, 560 mSDsluCounter, 3959 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 8438 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:23,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 8438 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:45:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2023-12-21 21:45:23,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2467. [2023-12-21 21:45:23,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2433 states have (on average 1.8368269625976161) internal successors, (4469), 2435 states have internal predecessors, (4469), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 21:45:23,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4521 transitions. [2023-12-21 21:45:23,252 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4521 transitions. Word has length 161 [2023-12-21 21:45:23,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:23,253 INFO L495 AbstractCegarLoop]: Abstraction has 2467 states and 4521 transitions. [2023-12-21 21:45:23,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:23,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4521 transitions. [2023-12-21 21:45:23,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:23,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:23,256 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, 1, 1, 1, 1, 1, 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 21:45:23,263 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 21:45:23,461 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 21:45:23,462 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:23,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:23,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2006676153, now seen corresponding path program 1 times [2023-12-21 21:45:23,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:23,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527811840] [2023-12-21 21:45:23,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:23,463 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 21:45:23,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:23,464 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 21:45:23,465 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 21:45:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:23,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:45:23,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:23,658 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 21:45:23,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:23,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:23,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527811840] [2023-12-21 21:45:23,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527811840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:23,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:23,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:45:23,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196938742] [2023-12-21 21:45:23,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:23,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:45:23,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:23,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:45:23,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:45:23,661 INFO L87 Difference]: Start difference. First operand 2467 states and 4521 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:23,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:23,747 INFO L93 Difference]: Finished difference Result 2800 states and 5061 transitions. [2023-12-21 21:45:23,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:45:23,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:23,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:23,755 INFO L225 Difference]: With dead ends: 2800 [2023-12-21 21:45:23,756 INFO L226 Difference]: Without dead ends: 2467 [2023-12-21 21:45:23,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 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 21:45:23,758 INFO L413 NwaCegarLoop]: 4475 mSDtfsCounter, 548 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 8432 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:23,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 8432 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:45:23,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2023-12-21 21:45:23,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2467. [2023-12-21 21:45:23,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2433 states have (on average 1.8364159473900534) internal successors, (4468), 2435 states have internal predecessors, (4468), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 21:45:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4520 transitions. [2023-12-21 21:45:23,805 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4520 transitions. Word has length 161 [2023-12-21 21:45:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:23,805 INFO L495 AbstractCegarLoop]: Abstraction has 2467 states and 4520 transitions. [2023-12-21 21:45:23,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4520 transitions. [2023-12-21 21:45:23,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:23,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:23,807 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, 1, 1, 1, 1, 1, 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 21:45:23,814 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 21:45:24,014 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 21:45:24,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:24,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:24,015 INFO L85 PathProgramCache]: Analyzing trace with hash -965112197, now seen corresponding path program 1 times [2023-12-21 21:45:24,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:24,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146298323] [2023-12-21 21:45:24,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:24,015 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 21:45:24,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:24,016 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 21:45:24,021 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 21:45:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:24,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:24,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:24,247 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 21:45:24,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:24,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:24,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146298323] [2023-12-21 21:45:24,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146298323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:24,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:24,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:24,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251651164] [2023-12-21 21:45:24,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:24,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:24,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:24,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:24,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:24,249 INFO L87 Difference]: Start difference. First operand 2467 states and 4520 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:24,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:25,000 INFO L93 Difference]: Finished difference Result 3172 states and 5681 transitions. [2023-12-21 21:45:25,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:45:25,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:25,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:25,010 INFO L225 Difference]: With dead ends: 3172 [2023-12-21 21:45:25,010 INFO L226 Difference]: Without dead ends: 2844 [2023-12-21 21:45:25,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:25,013 INFO L413 NwaCegarLoop]: 4369 mSDtfsCounter, 5049 mSDsluCounter, 8954 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5069 SdHoareTripleChecker+Valid, 13323 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:25,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5069 Valid, 13323 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 21:45:25,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2023-12-21 21:45:25,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2815. [2023-12-21 21:45:25,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2753 states have (on average 1.8147475481293134) internal successors, (4996), 2756 states have internal predecessors, (4996), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 21:45:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 5091 transitions. [2023-12-21 21:45:25,071 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 5091 transitions. Word has length 161 [2023-12-21 21:45:25,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:25,071 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 5091 transitions. [2023-12-21 21:45:25,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:25,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 5091 transitions. [2023-12-21 21:45:25,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:25,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:25,073 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, 1, 1, 1, 1, 1, 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 21:45:25,080 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 (4)] Forceful destruction successful, exit code 0 [2023-12-21 21:45:25,278 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 21:45:25,279 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:25,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:25,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1451895109, now seen corresponding path program 1 times [2023-12-21 21:45:25,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:25,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888744356] [2023-12-21 21:45:25,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:25,280 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 21:45:25,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:25,281 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 21:45:25,283 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 21:45:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:25,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:25,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:25,499 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 21:45:25,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:25,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:25,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888744356] [2023-12-21 21:45:25,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888744356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:25,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:25,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:25,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098636947] [2023-12-21 21:45:25,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:25,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:25,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:25,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:25,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:25,501 INFO L87 Difference]: Start difference. First operand 2815 states and 5091 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:25,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:25,974 INFO L93 Difference]: Finished difference Result 3491 states and 6200 transitions. [2023-12-21 21:45:25,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:25,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:25,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:25,984 INFO L225 Difference]: With dead ends: 3491 [2023-12-21 21:45:25,984 INFO L226 Difference]: Without dead ends: 2815 [2023-12-21 21:45:25,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:25,987 INFO L413 NwaCegarLoop]: 4309 mSDtfsCounter, 4722 mSDsluCounter, 8466 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4742 SdHoareTripleChecker+Valid, 12775 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:25,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4742 Valid, 12775 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:25,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2023-12-21 21:45:26,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2815. [2023-12-21 21:45:26,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2753 states have (on average 1.812204867417363) internal successors, (4989), 2756 states have internal predecessors, (4989), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 21:45:26,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 5084 transitions. [2023-12-21 21:45:26,045 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 5084 transitions. Word has length 161 [2023-12-21 21:45:26,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:26,045 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 5084 transitions. [2023-12-21 21:45:26,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:26,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 5084 transitions. [2023-12-21 21:45:26,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:26,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:26,047 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, 1, 1, 1, 1, 1, 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 21:45:26,066 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 21:45:26,252 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 21:45:26,252 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:26,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:26,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1303348859, now seen corresponding path program 1 times [2023-12-21 21:45:26,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:26,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614844429] [2023-12-21 21:45:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:26,254 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 21:45:26,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:26,255 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 21:45:26,288 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 21:45:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:26,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:26,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:26,457 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 21:45:26,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:26,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:26,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614844429] [2023-12-21 21:45:26,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614844429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:26,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:26,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:26,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412074968] [2023-12-21 21:45:26,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:26,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:26,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:26,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:26,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:26,459 INFO L87 Difference]: Start difference. First operand 2815 states and 5084 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:26,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:26,908 INFO L93 Difference]: Finished difference Result 3491 states and 6186 transitions. [2023-12-21 21:45:26,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:26,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:26,918 INFO L225 Difference]: With dead ends: 3491 [2023-12-21 21:45:26,921 INFO L226 Difference]: Without dead ends: 2815 [2023-12-21 21:45:26,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:26,929 INFO L413 NwaCegarLoop]: 4306 mSDtfsCounter, 4716 mSDsluCounter, 8462 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4736 SdHoareTripleChecker+Valid, 12768 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:26,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4736 Valid, 12768 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:26,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2023-12-21 21:45:26,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2815. [2023-12-21 21:45:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2753 states have (on average 1.8096621867054123) internal successors, (4982), 2756 states have internal predecessors, (4982), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 21:45:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 5077 transitions. [2023-12-21 21:45:26,991 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 5077 transitions. Word has length 161 [2023-12-21 21:45:26,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:26,991 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 5077 transitions. [2023-12-21 21:45:26,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:26,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 5077 transitions. [2023-12-21 21:45:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:26,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:26,993 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, 1, 1, 1, 1, 1, 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 21:45:27,000 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 21:45:27,197 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 21:45:27,198 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:27,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:27,198 INFO L85 PathProgramCache]: Analyzing trace with hash -832534343, now seen corresponding path program 1 times [2023-12-21 21:45:27,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:27,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139839221] [2023-12-21 21:45:27,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:27,199 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 21:45:27,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:27,200 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 21:45:27,221 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 21:45:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:27,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:27,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:27,409 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 21:45:27,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:27,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:27,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139839221] [2023-12-21 21:45:27,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139839221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:27,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:27,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:27,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980344238] [2023-12-21 21:45:27,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:27,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:27,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:27,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:27,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:27,411 INFO L87 Difference]: Start difference. First operand 2815 states and 5077 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:27,930 INFO L93 Difference]: Finished difference Result 3491 states and 6172 transitions. [2023-12-21 21:45:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:27,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:27,938 INFO L225 Difference]: With dead ends: 3491 [2023-12-21 21:45:27,939 INFO L226 Difference]: Without dead ends: 2815 [2023-12-21 21:45:27,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:27,941 INFO L413 NwaCegarLoop]: 4303 mSDtfsCounter, 4710 mSDsluCounter, 8458 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4730 SdHoareTripleChecker+Valid, 12761 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:27,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4730 Valid, 12761 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 21:45:27,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2023-12-21 21:45:27,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2815. [2023-12-21 21:45:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2753 states have (on average 1.8071195059934617) internal successors, (4975), 2756 states have internal predecessors, (4975), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 21:45:27,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 5070 transitions. [2023-12-21 21:45:27,994 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 5070 transitions. Word has length 161 [2023-12-21 21:45:27,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:27,994 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 5070 transitions. [2023-12-21 21:45:27,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:27,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 5070 transitions. [2023-12-21 21:45:27,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:27,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:27,996 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, 1, 1, 1, 1, 1, 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 21:45:28,003 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 21:45:28,201 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 21:45:28,202 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:28,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:28,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2134693767, now seen corresponding path program 1 times [2023-12-21 21:45:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:28,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730526103] [2023-12-21 21:45:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:28,203 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 21:45:28,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:28,204 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 21:45:28,248 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 21:45:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:28,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:28,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:28,410 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 21:45:28,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:28,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:28,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730526103] [2023-12-21 21:45:28,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730526103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:28,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:28,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:28,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226888940] [2023-12-21 21:45:28,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:28,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:28,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:28,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:28,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:28,412 INFO L87 Difference]: Start difference. First operand 2815 states and 5070 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:28,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:28,887 INFO L93 Difference]: Finished difference Result 3491 states and 6158 transitions. [2023-12-21 21:45:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:28,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:28,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:28,896 INFO L225 Difference]: With dead ends: 3491 [2023-12-21 21:45:28,897 INFO L226 Difference]: Without dead ends: 2815 [2023-12-21 21:45:28,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:28,900 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 4703 mSDsluCounter, 8454 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 12754 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:28,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4723 Valid, 12754 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:28,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2023-12-21 21:45:28,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2815. [2023-12-21 21:45:28,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2753 states have (on average 1.804576825281511) internal successors, (4968), 2756 states have internal predecessors, (4968), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 21:45:28,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 5063 transitions. [2023-12-21 21:45:28,953 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 5063 transitions. Word has length 161 [2023-12-21 21:45:28,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:28,954 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 5063 transitions. [2023-12-21 21:45:28,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:28,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 5063 transitions. [2023-12-21 21:45:28,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:28,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:28,955 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, 1, 1, 1, 1, 1, 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 21:45:28,962 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 21:45:29,160 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 21:45:29,161 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:29,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:29,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1765099463, now seen corresponding path program 1 times [2023-12-21 21:45:29,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:29,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445339801] [2023-12-21 21:45:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:29,162 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 21:45:29,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:29,163 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 21:45:29,192 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 21:45:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:29,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:29,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:29,355 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 21:45:29,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:29,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:29,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445339801] [2023-12-21 21:45:29,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445339801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:29,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:29,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:29,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020796043] [2023-12-21 21:45:29,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:29,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:29,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:29,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:29,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:29,356 INFO L87 Difference]: Start difference. First operand 2815 states and 5063 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:29,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:29,776 INFO L93 Difference]: Finished difference Result 3491 states and 6144 transitions. [2023-12-21 21:45:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:29,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:29,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:29,785 INFO L225 Difference]: With dead ends: 3491 [2023-12-21 21:45:29,786 INFO L226 Difference]: Without dead ends: 2815 [2023-12-21 21:45:29,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:29,788 INFO L413 NwaCegarLoop]: 4297 mSDtfsCounter, 4697 mSDsluCounter, 8450 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 12747 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:29,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4717 Valid, 12747 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:29,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2023-12-21 21:45:29,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2815. [2023-12-21 21:45:29,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2753 states have (on average 1.8020341445695605) internal successors, (4961), 2756 states have internal predecessors, (4961), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 21:45:29,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 5056 transitions. [2023-12-21 21:45:29,838 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 5056 transitions. Word has length 161 [2023-12-21 21:45:29,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:29,839 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 5056 transitions. [2023-12-21 21:45:29,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:29,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 5056 transitions. [2023-12-21 21:45:29,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:29,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:29,840 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, 1, 1, 1, 1, 1, 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 21:45:29,855 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 21:45:30,045 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 21:45:30,046 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:30,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:30,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1571958905, now seen corresponding path program 1 times [2023-12-21 21:45:30,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:30,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189660988] [2023-12-21 21:45:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:30,047 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 21:45:30,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:30,050 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 21:45:30,084 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 21:45:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:30,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:30,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:30,245 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 21:45:30,245 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:30,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:30,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189660988] [2023-12-21 21:45:30,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189660988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:30,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:30,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:30,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696416903] [2023-12-21 21:45:30,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:30,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:30,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:30,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:30,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:30,247 INFO L87 Difference]: Start difference. First operand 2815 states and 5056 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:30,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:30,689 INFO L93 Difference]: Finished difference Result 3491 states and 6130 transitions. [2023-12-21 21:45:30,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:30,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:30,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:30,698 INFO L225 Difference]: With dead ends: 3491 [2023-12-21 21:45:30,698 INFO L226 Difference]: Without dead ends: 2815 [2023-12-21 21:45:30,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:30,700 INFO L413 NwaCegarLoop]: 4294 mSDtfsCounter, 4691 mSDsluCounter, 8446 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4711 SdHoareTripleChecker+Valid, 12740 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:30,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4711 Valid, 12740 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:30,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2023-12-21 21:45:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2815. [2023-12-21 21:45:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2753 states have (on average 1.7994914638576098) internal successors, (4954), 2756 states have internal predecessors, (4954), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 21:45:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 5049 transitions. [2023-12-21 21:45:30,750 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 5049 transitions. Word has length 161 [2023-12-21 21:45:30,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:30,751 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 5049 transitions. [2023-12-21 21:45:30,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:30,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 5049 transitions. [2023-12-21 21:45:30,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:30,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:30,752 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, 1, 1, 1, 1, 1, 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 21:45:30,766 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 21:45:30,957 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 21:45:30,958 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:30,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:30,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1541058617, now seen corresponding path program 1 times [2023-12-21 21:45:30,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:30,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020824967] [2023-12-21 21:45:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:30,959 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 21:45:30,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:30,960 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 21:45:30,961 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 21:45:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:31,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:31,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:31,165 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 21:45:31,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:31,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:31,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020824967] [2023-12-21 21:45:31,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020824967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:31,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:31,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:31,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27590762] [2023-12-21 21:45:31,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:31,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:31,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:31,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:31,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:31,167 INFO L87 Difference]: Start difference. First operand 2815 states and 5049 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:31,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:31,613 INFO L93 Difference]: Finished difference Result 3491 states and 6116 transitions. [2023-12-21 21:45:31,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:31,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:31,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:31,630 INFO L225 Difference]: With dead ends: 3491 [2023-12-21 21:45:31,630 INFO L226 Difference]: Without dead ends: 2815 [2023-12-21 21:45:31,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:31,633 INFO L413 NwaCegarLoop]: 4291 mSDtfsCounter, 4685 mSDsluCounter, 8442 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4705 SdHoareTripleChecker+Valid, 12733 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:31,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4705 Valid, 12733 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:31,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2023-12-21 21:45:31,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2815. [2023-12-21 21:45:31,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2753 states have (on average 1.7969487831456592) internal successors, (4947), 2756 states have internal predecessors, (4947), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 21:45:31,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 5042 transitions. [2023-12-21 21:45:31,755 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 5042 transitions. Word has length 161 [2023-12-21 21:45:31,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:31,755 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 5042 transitions. [2023-12-21 21:45:31,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:31,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 5042 transitions. [2023-12-21 21:45:31,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:31,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:31,757 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, 1, 1, 1, 1, 1, 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 21:45:31,764 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 21:45:31,961 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 21:45:31,962 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:31,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash 985872505, now seen corresponding path program 1 times [2023-12-21 21:45:31,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:31,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005907171] [2023-12-21 21:45:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:31,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:45:31,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:31,964 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 21:45:31,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 21:45:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:32,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:32,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:32,169 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 21:45:32,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:32,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:32,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005907171] [2023-12-21 21:45:32,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005907171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:32,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:32,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:32,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259401692] [2023-12-21 21:45:32,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:32,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:32,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:32,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:32,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:32,171 INFO L87 Difference]: Start difference. First operand 2815 states and 5042 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:32,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:32,594 INFO L93 Difference]: Finished difference Result 3491 states and 6102 transitions. [2023-12-21 21:45:32,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:32,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:32,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:32,602 INFO L225 Difference]: With dead ends: 3491 [2023-12-21 21:45:32,602 INFO L226 Difference]: Without dead ends: 2815 [2023-12-21 21:45:32,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:32,605 INFO L413 NwaCegarLoop]: 4288 mSDtfsCounter, 4679 mSDsluCounter, 8438 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4699 SdHoareTripleChecker+Valid, 12726 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:32,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4699 Valid, 12726 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:45:32,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2023-12-21 21:45:32,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2815. [2023-12-21 21:45:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2753 states have (on average 1.7944061024337086) internal successors, (4940), 2756 states have internal predecessors, (4940), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 21:45:32,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 5035 transitions. [2023-12-21 21:45:32,677 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 5035 transitions. Word has length 161 [2023-12-21 21:45:32,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:32,678 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 5035 transitions. [2023-12-21 21:45:32,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:32,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 5035 transitions. [2023-12-21 21:45:32,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:32,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:32,680 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, 1, 1, 1, 1, 1, 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 21:45:32,684 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 21:45:32,883 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 21:45:32,884 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:32,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1802983367, now seen corresponding path program 1 times [2023-12-21 21:45:32,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:32,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759624252] [2023-12-21 21:45:32,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:32,885 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 21:45:32,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:32,886 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 21:45:32,889 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 21:45:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:33,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:33,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:33,092 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 21:45:33,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:33,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:33,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759624252] [2023-12-21 21:45:33,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759624252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:33,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:33,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:33,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082696737] [2023-12-21 21:45:33,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:33,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:33,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:33,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:33,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:33,094 INFO L87 Difference]: Start difference. First operand 2815 states and 5035 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:33,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:33,536 INFO L93 Difference]: Finished difference Result 3491 states and 6088 transitions. [2023-12-21 21:45:33,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:33,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:33,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:33,542 INFO L225 Difference]: With dead ends: 3491 [2023-12-21 21:45:33,542 INFO L226 Difference]: Without dead ends: 2815 [2023-12-21 21:45:33,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:33,544 INFO L413 NwaCegarLoop]: 4285 mSDtfsCounter, 4673 mSDsluCounter, 8434 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4693 SdHoareTripleChecker+Valid, 12719 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:33,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4693 Valid, 12719 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:33,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2023-12-21 21:45:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2815. [2023-12-21 21:45:33,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2753 states have (on average 1.7918634217217582) internal successors, (4933), 2756 states have internal predecessors, (4933), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 21:45:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 5028 transitions. [2023-12-21 21:45:33,612 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 5028 transitions. Word has length 161 [2023-12-21 21:45:33,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:33,613 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 5028 transitions. [2023-12-21 21:45:33,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:33,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 5028 transitions. [2023-12-21 21:45:33,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:33,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:33,615 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, 1, 1, 1, 1, 1, 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 21:45:33,621 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 21:45:33,819 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 21:45:33,819 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:33,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:33,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1127823241, now seen corresponding path program 1 times [2023-12-21 21:45:33,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:33,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73234532] [2023-12-21 21:45:33,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:33,821 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 21:45:33,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:33,821 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 21:45:33,822 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 21:45:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:33,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:33,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:34,011 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 21:45:34,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:34,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:34,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73234532] [2023-12-21 21:45:34,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73234532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:34,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:34,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:34,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809089728] [2023-12-21 21:45:34,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:34,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:34,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:34,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:34,013 INFO L87 Difference]: Start difference. First operand 2815 states and 5028 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:34,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:34,454 INFO L93 Difference]: Finished difference Result 3491 states and 6074 transitions. [2023-12-21 21:45:34,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:34,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:34,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:34,459 INFO L225 Difference]: With dead ends: 3491 [2023-12-21 21:45:34,459 INFO L226 Difference]: Without dead ends: 2815 [2023-12-21 21:45:34,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:34,461 INFO L413 NwaCegarLoop]: 4282 mSDtfsCounter, 4667 mSDsluCounter, 8430 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4687 SdHoareTripleChecker+Valid, 12712 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:34,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4687 Valid, 12712 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:34,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2023-12-21 21:45:34,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2815. [2023-12-21 21:45:34,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2753 states have (on average 1.7893207410098075) internal successors, (4926), 2756 states have internal predecessors, (4926), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 21:45:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 5021 transitions. [2023-12-21 21:45:34,516 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 5021 transitions. Word has length 161 [2023-12-21 21:45:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:34,517 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 5021 transitions. [2023-12-21 21:45:34,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:34,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 5021 transitions. [2023-12-21 21:45:34,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:34,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:34,518 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, 1, 1, 1, 1, 1, 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 21:45:34,525 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 21:45:34,723 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 21:45:34,724 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:34,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:34,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1801115593, now seen corresponding path program 1 times [2023-12-21 21:45:34,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:34,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033898252] [2023-12-21 21:45:34,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:34,724 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 21:45:34,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:34,726 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 21:45:34,740 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 21:45:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:34,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:34,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:34,907 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 21:45:34,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:34,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:34,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033898252] [2023-12-21 21:45:34,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033898252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:34,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:34,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:34,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121793402] [2023-12-21 21:45:34,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:34,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:34,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:34,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:34,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:34,909 INFO L87 Difference]: Start difference. First operand 2815 states and 5021 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:35,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:35,445 INFO L93 Difference]: Finished difference Result 3657 states and 6332 transitions. [2023-12-21 21:45:35,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:35,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:35,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:35,451 INFO L225 Difference]: With dead ends: 3657 [2023-12-21 21:45:35,451 INFO L226 Difference]: Without dead ends: 2981 [2023-12-21 21:45:35,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:35,453 INFO L413 NwaCegarLoop]: 4280 mSDtfsCounter, 4774 mSDsluCounter, 8426 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4794 SdHoareTripleChecker+Valid, 12706 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:35,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4794 Valid, 12706 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 21:45:35,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2023-12-21 21:45:35,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 2981. [2023-12-21 21:45:35,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2913 states have (on average 1.7696532784071404) internal successors, (5155), 2916 states have internal predecessors, (5155), 49 states have call successors, (49), 16 states have call predecessors, (49), 17 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 21:45:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 5254 transitions. [2023-12-21 21:45:35,503 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 5254 transitions. Word has length 161 [2023-12-21 21:45:35,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:35,503 INFO L495 AbstractCegarLoop]: Abstraction has 2981 states and 5254 transitions. [2023-12-21 21:45:35,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:35,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 5254 transitions. [2023-12-21 21:45:35,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:35,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:35,504 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, 1, 1, 1, 1, 1, 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 21:45:35,511 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 21:45:35,709 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 21:45:35,709 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:35,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:35,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2051051946, now seen corresponding path program 1 times [2023-12-21 21:45:35,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:35,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765182204] [2023-12-21 21:45:35,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:35,710 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 21:45:35,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:35,711 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 21:45:35,712 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 21:45:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:35,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:35,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:35,889 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 21:45:35,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:35,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:35,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765182204] [2023-12-21 21:45:35,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765182204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:35,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:35,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:35,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134867685] [2023-12-21 21:45:35,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:35,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:35,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:35,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:35,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:35,891 INFO L87 Difference]: Start difference. First operand 2981 states and 5254 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:36,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:36,540 INFO L93 Difference]: Finished difference Result 3989 states and 6798 transitions. [2023-12-21 21:45:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:36,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:36,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:36,545 INFO L225 Difference]: With dead ends: 3989 [2023-12-21 21:45:36,545 INFO L226 Difference]: Without dead ends: 3147 [2023-12-21 21:45:36,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:36,547 INFO L413 NwaCegarLoop]: 4277 mSDtfsCounter, 4767 mSDsluCounter, 8422 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4787 SdHoareTripleChecker+Valid, 12699 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:36,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4787 Valid, 12699 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 21:45:36,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2023-12-21 21:45:36,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 3147. [2023-12-21 21:45:36,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3147 states, 3073 states have (on average 1.750732183534006) internal successors, (5380), 3076 states have internal predecessors, (5380), 51 states have call successors, (51), 20 states have call predecessors, (51), 21 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2023-12-21 21:45:36,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 5483 transitions. [2023-12-21 21:45:36,600 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 5483 transitions. Word has length 161 [2023-12-21 21:45:36,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:36,600 INFO L495 AbstractCegarLoop]: Abstraction has 3147 states and 5483 transitions. [2023-12-21 21:45:36,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:36,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 5483 transitions. [2023-12-21 21:45:36,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:36,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:36,602 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, 1, 1, 1, 1, 1, 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 21:45:36,607 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 21:45:36,806 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 21:45:36,807 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:36,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:36,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1094506858, now seen corresponding path program 1 times [2023-12-21 21:45:36,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:36,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890163968] [2023-12-21 21:45:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:36,808 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 21:45:36,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:36,809 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 21:45:36,810 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 21:45:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:36,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:36,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:37,003 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 21:45:37,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:37,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:37,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890163968] [2023-12-21 21:45:37,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890163968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:37,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:37,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:37,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228876718] [2023-12-21 21:45:37,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:37,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:37,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:37,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:37,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:37,004 INFO L87 Difference]: Start difference. First operand 3147 states and 5483 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:37,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:37,551 INFO L93 Difference]: Finished difference Result 4321 states and 7256 transitions. [2023-12-21 21:45:37,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:37,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:37,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:37,558 INFO L225 Difference]: With dead ends: 4321 [2023-12-21 21:45:37,558 INFO L226 Difference]: Without dead ends: 3313 [2023-12-21 21:45:37,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:37,561 INFO L413 NwaCegarLoop]: 4274 mSDtfsCounter, 4761 mSDsluCounter, 8418 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4781 SdHoareTripleChecker+Valid, 12692 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:37,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4781 Valid, 12692 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 21:45:37,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3313 states. [2023-12-21 21:45:37,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 3313. [2023-12-21 21:45:37,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3313 states, 3233 states have (on average 1.732446643983916) internal successors, (5601), 3236 states have internal predecessors, (5601), 53 states have call successors, (53), 24 states have call predecessors, (53), 25 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2023-12-21 21:45:37,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 5708 transitions. [2023-12-21 21:45:37,625 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 5708 transitions. Word has length 161 [2023-12-21 21:45:37,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:37,625 INFO L495 AbstractCegarLoop]: Abstraction has 3313 states and 5708 transitions. [2023-12-21 21:45:37,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:37,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 5708 transitions. [2023-12-21 21:45:37,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:37,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:37,626 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, 1, 1, 1, 1, 1, 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 21:45:37,633 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 21:45:37,831 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 21:45:37,832 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:37,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:37,832 INFO L85 PathProgramCache]: Analyzing trace with hash 981333877, now seen corresponding path program 1 times [2023-12-21 21:45:37,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:37,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818195699] [2023-12-21 21:45:37,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:37,832 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 21:45:37,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:37,833 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 21:45:37,838 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 21:45:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:37,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:37,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:38,021 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 21:45:38,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:38,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:38,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818195699] [2023-12-21 21:45:38,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818195699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:38,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:38,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:38,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730708575] [2023-12-21 21:45:38,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:38,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:38,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:38,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:38,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:38,022 INFO L87 Difference]: Start difference. First operand 3313 states and 5708 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:38,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:38,551 INFO L93 Difference]: Finished difference Result 4653 states and 7706 transitions. [2023-12-21 21:45:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:38,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:38,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:38,557 INFO L225 Difference]: With dead ends: 4653 [2023-12-21 21:45:38,557 INFO L226 Difference]: Without dead ends: 3479 [2023-12-21 21:45:38,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:38,560 INFO L413 NwaCegarLoop]: 4271 mSDtfsCounter, 4754 mSDsluCounter, 8414 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4774 SdHoareTripleChecker+Valid, 12685 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:38,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4774 Valid, 12685 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:38,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2023-12-21 21:45:38,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3479. [2023-12-21 21:45:38,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3393 states have (on average 1.7147067491895078) internal successors, (5818), 3396 states have internal predecessors, (5818), 55 states have call successors, (55), 28 states have call predecessors, (55), 29 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2023-12-21 21:45:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 5929 transitions. [2023-12-21 21:45:38,626 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 5929 transitions. Word has length 161 [2023-12-21 21:45:38,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:38,626 INFO L495 AbstractCegarLoop]: Abstraction has 3479 states and 5929 transitions. [2023-12-21 21:45:38,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:38,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 5929 transitions. [2023-12-21 21:45:38,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:38,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:38,627 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, 1, 1, 1, 1, 1, 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 21:45:38,634 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 21:45:38,834 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 21:45:38,834 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:38,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:38,835 INFO L85 PathProgramCache]: Analyzing trace with hash -570443978, now seen corresponding path program 1 times [2023-12-21 21:45:38,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:38,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717299407] [2023-12-21 21:45:38,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:38,835 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 21:45:38,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:38,836 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 21:45:38,837 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 21:45:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:38,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:38,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:39,010 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 21:45:39,010 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:39,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:39,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717299407] [2023-12-21 21:45:39,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717299407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:39,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:39,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:39,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083655623] [2023-12-21 21:45:39,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:39,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:39,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:39,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:39,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:39,012 INFO L87 Difference]: Start difference. First operand 3479 states and 5929 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:39,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:39,543 INFO L93 Difference]: Finished difference Result 4985 states and 8148 transitions. [2023-12-21 21:45:39,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:39,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:39,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:39,549 INFO L225 Difference]: With dead ends: 4985 [2023-12-21 21:45:39,549 INFO L226 Difference]: Without dead ends: 3645 [2023-12-21 21:45:39,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:39,552 INFO L413 NwaCegarLoop]: 4268 mSDtfsCounter, 4747 mSDsluCounter, 8410 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4767 SdHoareTripleChecker+Valid, 12678 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:39,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4767 Valid, 12678 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:39,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2023-12-21 21:45:39,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3645. [2023-12-21 21:45:39,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 3553 states have (on average 1.6974387841260907) internal successors, (6031), 3556 states have internal predecessors, (6031), 57 states have call successors, (57), 32 states have call predecessors, (57), 33 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2023-12-21 21:45:39,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 6146 transitions. [2023-12-21 21:45:39,625 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 6146 transitions. Word has length 161 [2023-12-21 21:45:39,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:39,625 INFO L495 AbstractCegarLoop]: Abstraction has 3645 states and 6146 transitions. [2023-12-21 21:45:39,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:39,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 6146 transitions. [2023-12-21 21:45:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:39,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:39,627 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, 1, 1, 1, 1, 1, 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 21:45:39,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-21 21:45:39,831 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 21:45:39,831 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:39,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:39,832 INFO L85 PathProgramCache]: Analyzing trace with hash 353429238, now seen corresponding path program 1 times [2023-12-21 21:45:39,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:39,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758987051] [2023-12-21 21:45:39,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:39,832 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 21:45:39,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:39,833 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 21:45:39,870 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 21:45:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:39,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:39,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:40,013 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 21:45:40,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:40,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:40,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758987051] [2023-12-21 21:45:40,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758987051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:40,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:40,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:40,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712242564] [2023-12-21 21:45:40,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:40,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:40,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:40,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:40,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:40,015 INFO L87 Difference]: Start difference. First operand 3645 states and 6146 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:40,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:40,608 INFO L93 Difference]: Finished difference Result 5317 states and 8582 transitions. [2023-12-21 21:45:40,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:40,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:40,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:40,613 INFO L225 Difference]: With dead ends: 5317 [2023-12-21 21:45:40,614 INFO L226 Difference]: Without dead ends: 3811 [2023-12-21 21:45:40,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:40,616 INFO L413 NwaCegarLoop]: 4265 mSDtfsCounter, 4740 mSDsluCounter, 8406 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4760 SdHoareTripleChecker+Valid, 12671 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:40,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4760 Valid, 12671 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:40,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3811 states. [2023-12-21 21:45:40,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3811 to 3811. [2023-12-21 21:45:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3811 states, 3713 states have (on average 1.6805817398330192) internal successors, (6240), 3716 states have internal predecessors, (6240), 59 states have call successors, (59), 36 states have call predecessors, (59), 37 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2023-12-21 21:45:40,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3811 states to 3811 states and 6359 transitions. [2023-12-21 21:45:40,694 INFO L78 Accepts]: Start accepts. Automaton has 3811 states and 6359 transitions. Word has length 161 [2023-12-21 21:45:40,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:40,694 INFO L495 AbstractCegarLoop]: Abstraction has 3811 states and 6359 transitions. [2023-12-21 21:45:40,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3811 states and 6359 transitions. [2023-12-21 21:45:40,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:40,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:40,695 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, 1, 1, 1, 1, 1, 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 21:45:40,702 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 21:45:40,900 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 21:45:40,900 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:40,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:40,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1380801013, now seen corresponding path program 1 times [2023-12-21 21:45:40,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:40,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264157685] [2023-12-21 21:45:40,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:40,902 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 21:45:40,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:40,903 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 21:45:40,921 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 21:45:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:41,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:41,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:41,095 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 21:45:41,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:41,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:41,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264157685] [2023-12-21 21:45:41,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264157685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:41,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:41,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:41,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545509708] [2023-12-21 21:45:41,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:41,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:41,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:41,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:41,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:41,097 INFO L87 Difference]: Start difference. First operand 3811 states and 6359 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:41,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:41,625 INFO L93 Difference]: Finished difference Result 5649 states and 9008 transitions. [2023-12-21 21:45:41,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:41,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:41,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:41,631 INFO L225 Difference]: With dead ends: 5649 [2023-12-21 21:45:41,631 INFO L226 Difference]: Without dead ends: 3977 [2023-12-21 21:45:41,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:41,634 INFO L413 NwaCegarLoop]: 4262 mSDtfsCounter, 4733 mSDsluCounter, 8402 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4753 SdHoareTripleChecker+Valid, 12664 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:41,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4753 Valid, 12664 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:41,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2023-12-21 21:45:41,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3977. [2023-12-21 21:45:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3977 states, 3873 states have (on average 1.6640846888716756) internal successors, (6445), 3876 states have internal predecessors, (6445), 61 states have call successors, (61), 40 states have call predecessors, (61), 41 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2023-12-21 21:45:41,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 6568 transitions. [2023-12-21 21:45:41,712 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 6568 transitions. Word has length 161 [2023-12-21 21:45:41,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:41,713 INFO L495 AbstractCegarLoop]: Abstraction has 3977 states and 6568 transitions. [2023-12-21 21:45:41,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:41,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 6568 transitions. [2023-12-21 21:45:41,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:41,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:41,715 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, 1, 1, 1, 1, 1, 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 21:45:41,733 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 21:45:41,933 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 21:45:41,933 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:41,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:41,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1734834613, now seen corresponding path program 1 times [2023-12-21 21:45:41,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:41,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424523683] [2023-12-21 21:45:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:41,934 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 21:45:41,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:41,935 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 21:45:41,935 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 21:45:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:42,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:42,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:42,121 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 21:45:42,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:42,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:42,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424523683] [2023-12-21 21:45:42,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424523683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:42,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:42,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:42,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607423302] [2023-12-21 21:45:42,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:42,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:42,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:42,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:42,123 INFO L87 Difference]: Start difference. First operand 3977 states and 6568 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:42,645 INFO L93 Difference]: Finished difference Result 5981 states and 9426 transitions. [2023-12-21 21:45:42,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:42,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:42,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:42,650 INFO L225 Difference]: With dead ends: 5981 [2023-12-21 21:45:42,651 INFO L226 Difference]: Without dead ends: 4143 [2023-12-21 21:45:42,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:42,654 INFO L413 NwaCegarLoop]: 4259 mSDtfsCounter, 4725 mSDsluCounter, 8398 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4745 SdHoareTripleChecker+Valid, 12657 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:42,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4745 Valid, 12657 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:42,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2023-12-21 21:45:42,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4143. [2023-12-21 21:45:42,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 4033 states have (on average 1.6479047855194644) internal successors, (6646), 4036 states have internal predecessors, (6646), 63 states have call successors, (63), 44 states have call predecessors, (63), 45 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-12-21 21:45:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 6773 transitions. [2023-12-21 21:45:42,739 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 6773 transitions. Word has length 161 [2023-12-21 21:45:42,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:42,739 INFO L495 AbstractCegarLoop]: Abstraction has 4143 states and 6773 transitions. [2023-12-21 21:45:42,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:42,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 6773 transitions. [2023-12-21 21:45:42,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:42,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:42,741 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, 1, 1, 1, 1, 1, 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 21:45:42,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-21 21:45:42,945 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 21:45:42,945 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:42,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash 671517045, now seen corresponding path program 1 times [2023-12-21 21:45:42,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:42,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371457955] [2023-12-21 21:45:42,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:42,946 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 21:45:42,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:42,947 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 21:45:42,948 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 21:45:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:43,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:43,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:43,121 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 21:45:43,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:43,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371457955] [2023-12-21 21:45:43,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371457955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:43,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:43,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:43,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704814365] [2023-12-21 21:45:43,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:43,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:43,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:43,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:43,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:43,123 INFO L87 Difference]: Start difference. First operand 4143 states and 6773 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:43,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:43,688 INFO L93 Difference]: Finished difference Result 6313 states and 9836 transitions. [2023-12-21 21:45:43,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:43,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:43,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:43,695 INFO L225 Difference]: With dead ends: 6313 [2023-12-21 21:45:43,695 INFO L226 Difference]: Without dead ends: 4309 [2023-12-21 21:45:43,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:43,699 INFO L413 NwaCegarLoop]: 4256 mSDtfsCounter, 4718 mSDsluCounter, 8394 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4738 SdHoareTripleChecker+Valid, 12650 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:43,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4738 Valid, 12650 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:43,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2023-12-21 21:45:43,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 4309. [2023-12-21 21:45:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4309 states, 4193 states have (on average 1.6320057238254233) internal successors, (6843), 4196 states have internal predecessors, (6843), 65 states have call successors, (65), 48 states have call predecessors, (65), 49 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2023-12-21 21:45:43,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4309 states to 4309 states and 6974 transitions. [2023-12-21 21:45:43,845 INFO L78 Accepts]: Start accepts. Automaton has 4309 states and 6974 transitions. Word has length 161 [2023-12-21 21:45:43,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:43,846 INFO L495 AbstractCegarLoop]: Abstraction has 4309 states and 6974 transitions. [2023-12-21 21:45:43,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:43,846 INFO L276 IsEmpty]: Start isEmpty. Operand 4309 states and 6974 transitions. [2023-12-21 21:45:43,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:43,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:43,848 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, 1, 1, 1, 1, 1, 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 21:45:43,854 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 21:45:44,052 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 21:45:44,052 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:44,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:44,053 INFO L85 PathProgramCache]: Analyzing trace with hash -370614026, now seen corresponding path program 1 times [2023-12-21 21:45:44,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:44,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883669684] [2023-12-21 21:45:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:44,053 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 21:45:44,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:44,054 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 21:45:44,056 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 21:45:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:44,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:44,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:44,225 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 21:45:44,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:44,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:44,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883669684] [2023-12-21 21:45:44,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883669684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:44,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:44,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:44,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789768755] [2023-12-21 21:45:44,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:44,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:44,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:44,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:44,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:44,227 INFO L87 Difference]: Start difference. First operand 4309 states and 6974 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:44,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:44,758 INFO L93 Difference]: Finished difference Result 6645 states and 10238 transitions. [2023-12-21 21:45:44,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:44,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:44,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:44,763 INFO L225 Difference]: With dead ends: 6645 [2023-12-21 21:45:44,763 INFO L226 Difference]: Without dead ends: 4475 [2023-12-21 21:45:44,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:44,767 INFO L413 NwaCegarLoop]: 4253 mSDtfsCounter, 4711 mSDsluCounter, 8390 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4731 SdHoareTripleChecker+Valid, 12643 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:44,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4731 Valid, 12643 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2023-12-21 21:45:44,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4475. [2023-12-21 21:45:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4475 states, 4353 states have (on average 1.6163565357224903) internal successors, (7036), 4356 states have internal predecessors, (7036), 67 states have call successors, (67), 52 states have call predecessors, (67), 53 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2023-12-21 21:45:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 7171 transitions. [2023-12-21 21:45:44,868 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 7171 transitions. Word has length 161 [2023-12-21 21:45:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:44,868 INFO L495 AbstractCegarLoop]: Abstraction has 4475 states and 7171 transitions. [2023-12-21 21:45:44,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:44,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 7171 transitions. [2023-12-21 21:45:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:44,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:44,870 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, 1, 1, 1, 1, 1, 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 21:45:44,875 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 21:45:45,071 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 21:45:45,071 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:45,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:45,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1384702134, now seen corresponding path program 1 times [2023-12-21 21:45:45,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:45,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051970488] [2023-12-21 21:45:45,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:45,072 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 21:45:45,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:45,073 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 21:45:45,099 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 21:45:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:45,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:45,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:45,257 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 21:45:45,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:45,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:45,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051970488] [2023-12-21 21:45:45,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051970488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:45,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:45,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:45,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000072108] [2023-12-21 21:45:45,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:45,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:45,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:45,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:45,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:45,259 INFO L87 Difference]: Start difference. First operand 4475 states and 7171 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:45,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:45,783 INFO L93 Difference]: Finished difference Result 6977 states and 10632 transitions. [2023-12-21 21:45:45,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:45,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:45,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:45,789 INFO L225 Difference]: With dead ends: 6977 [2023-12-21 21:45:45,789 INFO L226 Difference]: Without dead ends: 4641 [2023-12-21 21:45:45,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:45,793 INFO L413 NwaCegarLoop]: 4250 mSDtfsCounter, 4704 mSDsluCounter, 8386 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 12636 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:45,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4724 Valid, 12636 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4641 states. [2023-12-21 21:45:45,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4641 to 4641. [2023-12-21 21:45:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4641 states, 4513 states have (on average 1.6009306448038998) internal successors, (7225), 4516 states have internal predecessors, (7225), 69 states have call successors, (69), 56 states have call predecessors, (69), 57 states have return successors, (70), 69 states have call predecessors, (70), 69 states have call successors, (70) [2023-12-21 21:45:45,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4641 states to 4641 states and 7364 transitions. [2023-12-21 21:45:45,891 INFO L78 Accepts]: Start accepts. Automaton has 4641 states and 7364 transitions. Word has length 161 [2023-12-21 21:45:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:45,891 INFO L495 AbstractCegarLoop]: Abstraction has 4641 states and 7364 transitions. [2023-12-21 21:45:45,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 4641 states and 7364 transitions. [2023-12-21 21:45:45,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:45,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:45,892 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, 1, 1, 1, 1, 1, 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 21:45:45,907 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 (25)] Ended with exit code 0 [2023-12-21 21:45:46,096 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 21:45:46,097 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:46,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:46,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1745013385, now seen corresponding path program 1 times [2023-12-21 21:45:46,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:46,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703121296] [2023-12-21 21:45:46,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:46,099 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 21:45:46,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:46,100 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 21:45:46,102 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 21:45:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:46,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:46,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:46,276 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 21:45:46,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:46,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:46,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703121296] [2023-12-21 21:45:46,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703121296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:46,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:46,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:46,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112996039] [2023-12-21 21:45:46,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:46,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:46,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:46,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:46,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:46,278 INFO L87 Difference]: Start difference. First operand 4641 states and 7364 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:46,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:46,877 INFO L93 Difference]: Finished difference Result 7309 states and 11018 transitions. [2023-12-21 21:45:46,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:46,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:46,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:46,883 INFO L225 Difference]: With dead ends: 7309 [2023-12-21 21:45:46,883 INFO L226 Difference]: Without dead ends: 4807 [2023-12-21 21:45:46,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:46,886 INFO L413 NwaCegarLoop]: 4247 mSDtfsCounter, 4697 mSDsluCounter, 8382 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 12629 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:46,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4717 Valid, 12629 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 21:45:46,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4807 states. [2023-12-21 21:45:46,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4807 to 4807. [2023-12-21 21:45:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4807 states, 4673 states have (on average 1.5857051144874812) internal successors, (7410), 4676 states have internal predecessors, (7410), 71 states have call successors, (71), 60 states have call predecessors, (71), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2023-12-21 21:45:46,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4807 states to 4807 states and 7553 transitions. [2023-12-21 21:45:46,989 INFO L78 Accepts]: Start accepts. Automaton has 4807 states and 7553 transitions. Word has length 161 [2023-12-21 21:45:46,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:46,990 INFO L495 AbstractCegarLoop]: Abstraction has 4807 states and 7553 transitions. [2023-12-21 21:45:46,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:46,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4807 states and 7553 transitions. [2023-12-21 21:45:46,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:46,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:46,991 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, 1, 1, 1, 1, 1, 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 21:45:46,997 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 21:45:47,192 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 21:45:47,192 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:47,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash 754404374, now seen corresponding path program 1 times [2023-12-21 21:45:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:47,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466270266] [2023-12-21 21:45:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:47,193 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 21:45:47,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:47,194 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 21:45:47,195 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 21:45:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:47,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:47,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:47,325 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 21:45:47,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:47,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:47,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466270266] [2023-12-21 21:45:47,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466270266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:47,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:47,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:47,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206712341] [2023-12-21 21:45:47,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:47,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:47,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:47,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:47,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:47,330 INFO L87 Difference]: Start difference. First operand 4807 states and 7553 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:47,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:47,527 INFO L93 Difference]: Finished difference Result 7626 states and 11375 transitions. [2023-12-21 21:45:47,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:47,528 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:47,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:47,534 INFO L225 Difference]: With dead ends: 7626 [2023-12-21 21:45:47,534 INFO L226 Difference]: Without dead ends: 4959 [2023-12-21 21:45:47,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 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 21:45:47,540 INFO L413 NwaCegarLoop]: 4409 mSDtfsCounter, 110 mSDsluCounter, 8802 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 13211 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:47,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 13211 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:45:47,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4959 states. [2023-12-21 21:45:47,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4959 to 4811. [2023-12-21 21:45:47,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4811 states, 4677 states have (on average 1.5800726961727602) internal successors, (7390), 4680 states have internal predecessors, (7390), 71 states have call successors, (71), 60 states have call predecessors, (71), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2023-12-21 21:45:47,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4811 states to 4811 states and 7533 transitions. [2023-12-21 21:45:47,649 INFO L78 Accepts]: Start accepts. Automaton has 4811 states and 7533 transitions. Word has length 161 [2023-12-21 21:45:47,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:47,650 INFO L495 AbstractCegarLoop]: Abstraction has 4811 states and 7533 transitions. [2023-12-21 21:45:47,650 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:47,650 INFO L276 IsEmpty]: Start isEmpty. Operand 4811 states and 7533 transitions. [2023-12-21 21:45:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:47,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:47,651 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, 1, 1, 1, 1, 1, 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 21:45:47,657 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 21:45:47,855 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 21:45:47,855 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:47,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1387456104, now seen corresponding path program 1 times [2023-12-21 21:45:47,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:47,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758395858] [2023-12-21 21:45:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:47,856 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 21:45:47,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:47,857 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 21:45:47,878 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 21:45:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:47,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:47,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:47,987 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 21:45:47,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:47,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:47,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758395858] [2023-12-21 21:45:47,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758395858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:47,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:47,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:47,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675534747] [2023-12-21 21:45:47,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:47,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:47,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:47,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:47,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:47,989 INFO L87 Difference]: Start difference. First operand 4811 states and 7533 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:48,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:48,174 INFO L93 Difference]: Finished difference Result 7622 states and 11319 transitions. [2023-12-21 21:45:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:48,175 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:48,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:48,183 INFO L225 Difference]: With dead ends: 7622 [2023-12-21 21:45:48,183 INFO L226 Difference]: Without dead ends: 4951 [2023-12-21 21:45:48,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 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 21:45:48,189 INFO L413 NwaCegarLoop]: 4409 mSDtfsCounter, 101 mSDsluCounter, 8803 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 13212 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:48,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 13212 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:45:48,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2023-12-21 21:45:48,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 4815. [2023-12-21 21:45:48,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4815 states, 4681 states have (on average 1.5744499038666953) internal successors, (7370), 4684 states have internal predecessors, (7370), 71 states have call successors, (71), 60 states have call predecessors, (71), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2023-12-21 21:45:48,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4815 states to 4815 states and 7513 transitions. [2023-12-21 21:45:48,363 INFO L78 Accepts]: Start accepts. Automaton has 4815 states and 7513 transitions. Word has length 161 [2023-12-21 21:45:48,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:48,363 INFO L495 AbstractCegarLoop]: Abstraction has 4815 states and 7513 transitions. [2023-12-21 21:45:48,363 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 4815 states and 7513 transitions. [2023-12-21 21:45:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:48,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:48,364 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, 1, 1, 1, 1, 1, 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 21:45:48,368 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 21:45:48,565 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 21:45:48,565 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:48,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1040802518, now seen corresponding path program 1 times [2023-12-21 21:45:48,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:48,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964128053] [2023-12-21 21:45:48,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:48,566 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 21:45:48,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:48,567 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 21:45:48,580 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 21:45:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:48,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:48,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:48,696 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 21:45:48,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:48,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:48,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964128053] [2023-12-21 21:45:48,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964128053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:48,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:48,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:48,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913206548] [2023-12-21 21:45:48,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:48,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:48,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:48,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:48,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:48,698 INFO L87 Difference]: Start difference. First operand 4815 states and 7513 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:48,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:48,873 INFO L93 Difference]: Finished difference Result 7618 states and 11263 transitions. [2023-12-21 21:45:48,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:48,873 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:48,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:48,879 INFO L225 Difference]: With dead ends: 7618 [2023-12-21 21:45:48,879 INFO L226 Difference]: Without dead ends: 4943 [2023-12-21 21:45:48,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 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 21:45:48,883 INFO L413 NwaCegarLoop]: 4409 mSDtfsCounter, 92 mSDsluCounter, 8804 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 13213 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:48,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 13213 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:45:48,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4943 states. [2023-12-21 21:45:48,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4943 to 4819. [2023-12-21 21:45:48,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4819 states, 4685 states have (on average 1.5688367129135539) internal successors, (7350), 4688 states have internal predecessors, (7350), 71 states have call successors, (71), 60 states have call predecessors, (71), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2023-12-21 21:45:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4819 states to 4819 states and 7493 transitions. [2023-12-21 21:45:48,984 INFO L78 Accepts]: Start accepts. Automaton has 4819 states and 7493 transitions. Word has length 161 [2023-12-21 21:45:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:48,984 INFO L495 AbstractCegarLoop]: Abstraction has 4819 states and 7493 transitions. [2023-12-21 21:45:48,984 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand 4819 states and 7493 transitions. [2023-12-21 21:45:48,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:48,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:48,985 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, 1, 1, 1, 1, 1, 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 21:45:48,989 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 (29)] Ended with exit code 0 [2023-12-21 21:45:49,188 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 21:45:49,189 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:49,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:49,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1653093672, now seen corresponding path program 1 times [2023-12-21 21:45:49,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:49,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324672448] [2023-12-21 21:45:49,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:49,190 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 21:45:49,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:49,191 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 21:45:49,192 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 21:45:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:49,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:49,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:49,323 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 21:45:49,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:49,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:49,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324672448] [2023-12-21 21:45:49,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324672448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:49,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:49,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:49,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878859965] [2023-12-21 21:45:49,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:49,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:49,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:49,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:49,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:49,325 INFO L87 Difference]: Start difference. First operand 4819 states and 7493 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:49,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:49,503 INFO L93 Difference]: Finished difference Result 7614 states and 11207 transitions. [2023-12-21 21:45:49,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:49,504 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:49,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:49,510 INFO L225 Difference]: With dead ends: 7614 [2023-12-21 21:45:49,511 INFO L226 Difference]: Without dead ends: 4935 [2023-12-21 21:45:49,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 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 21:45:49,515 INFO L413 NwaCegarLoop]: 4409 mSDtfsCounter, 83 mSDsluCounter, 8805 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 13214 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:49,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 13214 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:45:49,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4935 states. [2023-12-21 21:45:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4935 to 4823. [2023-12-21 21:45:49,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4823 states, 4689 states have (on average 1.563233098741736) internal successors, (7330), 4692 states have internal predecessors, (7330), 71 states have call successors, (71), 60 states have call predecessors, (71), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2023-12-21 21:45:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4823 states to 4823 states and 7473 transitions. [2023-12-21 21:45:49,618 INFO L78 Accepts]: Start accepts. Automaton has 4823 states and 7473 transitions. Word has length 161 [2023-12-21 21:45:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:49,618 INFO L495 AbstractCegarLoop]: Abstraction has 4823 states and 7473 transitions. [2023-12-21 21:45:49,618 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:49,618 INFO L276 IsEmpty]: Start isEmpty. Operand 4823 states and 7473 transitions. [2023-12-21 21:45:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:49,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:49,619 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, 1, 1, 1, 1, 1, 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 21:45:49,623 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 (30)] Ended with exit code 0 [2023-12-21 21:45:49,821 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 21:45:49,821 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:49,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:49,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1681593962, now seen corresponding path program 1 times [2023-12-21 21:45:49,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:49,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588921704] [2023-12-21 21:45:49,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:49,822 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 21:45:49,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:49,823 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 21:45:49,823 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 21:45:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:49,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:49,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:49,947 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 21:45:49,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:49,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:49,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588921704] [2023-12-21 21:45:49,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588921704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:49,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:49,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:49,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100044364] [2023-12-21 21:45:49,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:49,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:49,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:49,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:49,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:49,948 INFO L87 Difference]: Start difference. First operand 4823 states and 7473 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:50,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:50,207 INFO L93 Difference]: Finished difference Result 7598 states and 11135 transitions. [2023-12-21 21:45:50,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:50,208 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:50,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:50,213 INFO L225 Difference]: With dead ends: 7598 [2023-12-21 21:45:50,213 INFO L226 Difference]: Without dead ends: 4915 [2023-12-21 21:45:50,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 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 21:45:50,215 INFO L413 NwaCegarLoop]: 4409 mSDtfsCounter, 65 mSDsluCounter, 8807 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 13216 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:50,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 13216 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:45:50,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4915 states. [2023-12-21 21:45:50,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4915 to 4827. [2023-12-21 21:45:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4693 states have (on average 1.5576390368634137) internal successors, (7310), 4696 states have internal predecessors, (7310), 71 states have call successors, (71), 60 states have call predecessors, (71), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2023-12-21 21:45:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 7453 transitions. [2023-12-21 21:45:50,316 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 7453 transitions. Word has length 161 [2023-12-21 21:45:50,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:50,316 INFO L495 AbstractCegarLoop]: Abstraction has 4827 states and 7453 transitions. [2023-12-21 21:45:50,316 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:50,316 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 7453 transitions. [2023-12-21 21:45:50,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:50,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:50,317 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, 1, 1, 1, 1, 1, 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 21:45:50,323 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 21:45:50,518 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 21:45:50,518 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:50,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:50,518 INFO L85 PathProgramCache]: Analyzing trace with hash -114836012, now seen corresponding path program 1 times [2023-12-21 21:45:50,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:50,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197551401] [2023-12-21 21:45:50,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:50,519 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 21:45:50,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:50,520 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 21:45:50,527 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 21:45:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:50,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:50,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:50,645 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 21:45:50,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:50,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:50,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197551401] [2023-12-21 21:45:50,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197551401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:50,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:50,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:50,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969966856] [2023-12-21 21:45:50,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:50,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:50,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:50,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:50,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:50,647 INFO L87 Difference]: Start difference. First operand 4827 states and 7453 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:50,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:50,838 INFO L93 Difference]: Finished difference Result 7594 states and 11079 transitions. [2023-12-21 21:45:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:50,838 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:50,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:50,844 INFO L225 Difference]: With dead ends: 7594 [2023-12-21 21:45:50,845 INFO L226 Difference]: Without dead ends: 4907 [2023-12-21 21:45:50,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 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 21:45:50,848 INFO L413 NwaCegarLoop]: 4409 mSDtfsCounter, 56 mSDsluCounter, 8808 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 13217 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:50,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 13217 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:45:50,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2023-12-21 21:45:50,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 4831. [2023-12-21 21:45:50,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4831 states, 4697 states have (on average 1.552054502874175) internal successors, (7290), 4700 states have internal predecessors, (7290), 71 states have call successors, (71), 60 states have call predecessors, (71), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2023-12-21 21:45:50,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4831 states to 4831 states and 7433 transitions. [2023-12-21 21:45:50,952 INFO L78 Accepts]: Start accepts. Automaton has 4831 states and 7433 transitions. Word has length 161 [2023-12-21 21:45:50,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:50,952 INFO L495 AbstractCegarLoop]: Abstraction has 4831 states and 7433 transitions. [2023-12-21 21:45:50,952 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4831 states and 7433 transitions. [2023-12-21 21:45:50,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:50,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:50,954 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, 1, 1, 1, 1, 1, 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 21:45:50,957 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 21:45:51,156 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 21:45:51,156 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:51,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:51,157 INFO L85 PathProgramCache]: Analyzing trace with hash -87770410, now seen corresponding path program 1 times [2023-12-21 21:45:51,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:51,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637844120] [2023-12-21 21:45:51,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:51,157 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 21:45:51,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:51,158 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 21:45:51,159 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 21:45:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:51,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:45:51,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:51,355 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 21:45:51,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:51,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:51,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637844120] [2023-12-21 21:45:51,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637844120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:51,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:51,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:45:51,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044268856] [2023-12-21 21:45:51,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:51,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:45:51,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:51,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:45:51,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:45:51,357 INFO L87 Difference]: Start difference. First operand 4831 states and 7433 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:51,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:51,593 INFO L93 Difference]: Finished difference Result 10014 states and 14099 transitions. [2023-12-21 21:45:51,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:45:51,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:51,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:51,603 INFO L225 Difference]: With dead ends: 10014 [2023-12-21 21:45:51,603 INFO L226 Difference]: Without dead ends: 7323 [2023-12-21 21:45:51,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 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 21:45:51,607 INFO L413 NwaCegarLoop]: 4465 mSDtfsCounter, 4356 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4356 SdHoareTripleChecker+Valid, 4879 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:51,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4356 Valid, 4879 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:45:51,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7323 states. [2023-12-21 21:45:51,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7323 to 7319. [2023-12-21 21:45:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7319 states, 7065 states have (on average 1.4587402689313518) internal successors, (10306), 7069 states have internal predecessors, (10306), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2023-12-21 21:45:51,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7319 states to 7319 states and 10576 transitions. [2023-12-21 21:45:51,862 INFO L78 Accepts]: Start accepts. Automaton has 7319 states and 10576 transitions. Word has length 161 [2023-12-21 21:45:51,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:51,863 INFO L495 AbstractCegarLoop]: Abstraction has 7319 states and 10576 transitions. [2023-12-21 21:45:51,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:51,863 INFO L276 IsEmpty]: Start isEmpty. Operand 7319 states and 10576 transitions. [2023-12-21 21:45:51,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:51,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:51,864 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, 1, 1, 1, 1, 1, 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 21:45:51,884 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 21:45:52,068 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 21:45:52,068 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:52,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:52,068 INFO L85 PathProgramCache]: Analyzing trace with hash 53329111, now seen corresponding path program 1 times [2023-12-21 21:45:52,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:52,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958765967] [2023-12-21 21:45:52,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:52,069 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 21:45:52,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:52,071 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 21:45:52,071 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 21:45:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:52,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:52,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:52,194 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 21:45:52,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:52,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:52,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958765967] [2023-12-21 21:45:52,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958765967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:52,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:52,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:52,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007843401] [2023-12-21 21:45:52,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:52,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:52,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:52,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:52,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:52,196 INFO L87 Difference]: Start difference. First operand 7319 states and 10576 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:52,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:52,453 INFO L93 Difference]: Finished difference Result 13382 states and 18451 transitions. [2023-12-21 21:45:52,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:52,456 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:52,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:52,469 INFO L225 Difference]: With dead ends: 13382 [2023-12-21 21:45:52,469 INFO L226 Difference]: Without dead ends: 8203 [2023-12-21 21:45:52,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 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 21:45:52,478 INFO L413 NwaCegarLoop]: 4412 mSDtfsCounter, 47 mSDsluCounter, 8818 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 13230 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:52,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 13230 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:45:52,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8203 states. [2023-12-21 21:45:52,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8203 to 7371. [2023-12-21 21:45:52,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7371 states, 7117 states have (on average 1.4520162990023886) internal successors, (10334), 7121 states have internal predecessors, (10334), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2023-12-21 21:45:52,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7371 states to 7371 states and 10604 transitions. [2023-12-21 21:45:52,672 INFO L78 Accepts]: Start accepts. Automaton has 7371 states and 10604 transitions. Word has length 161 [2023-12-21 21:45:52,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:52,673 INFO L495 AbstractCegarLoop]: Abstraction has 7371 states and 10604 transitions. [2023-12-21 21:45:52,673 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:52,673 INFO L276 IsEmpty]: Start isEmpty. Operand 7371 states and 10604 transitions. [2023-12-21 21:45:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:52,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:52,674 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, 1, 1, 1, 1, 1, 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 21:45:52,678 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 (34)] Forceful destruction successful, exit code 0 [2023-12-21 21:45:52,878 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 21:45:52,878 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:52,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:52,879 INFO L85 PathProgramCache]: Analyzing trace with hash 130229909, now seen corresponding path program 1 times [2023-12-21 21:45:52,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:52,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656280980] [2023-12-21 21:45:52,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:52,879 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 21:45:52,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:52,880 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 21:45:52,886 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 21:45:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:52,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:53,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:53,009 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 21:45:53,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:53,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:53,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656280980] [2023-12-21 21:45:53,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656280980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:53,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:53,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:53,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620461030] [2023-12-21 21:45:53,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:53,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:53,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:53,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:53,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:53,011 INFO L87 Difference]: Start difference. First operand 7371 states and 10604 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:53,333 INFO L93 Difference]: Finished difference Result 12658 states and 17398 transitions. [2023-12-21 21:45:53,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:53,334 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:53,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:53,344 INFO L225 Difference]: With dead ends: 12658 [2023-12-21 21:45:53,344 INFO L226 Difference]: Without dead ends: 7427 [2023-12-21 21:45:53,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 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 21:45:53,351 INFO L413 NwaCegarLoop]: 4409 mSDtfsCounter, 38 mSDsluCounter, 8809 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 13218 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:53,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 13218 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:45:53,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7427 states. [2023-12-21 21:45:53,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7427 to 7375. [2023-12-21 21:45:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7375 states, 7121 states have (on average 1.4450217666058138) internal successors, (10290), 7125 states have internal predecessors, (10290), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2023-12-21 21:45:53,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7375 states to 7375 states and 10560 transitions. [2023-12-21 21:45:53,544 INFO L78 Accepts]: Start accepts. Automaton has 7375 states and 10560 transitions. Word has length 161 [2023-12-21 21:45:53,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:53,544 INFO L495 AbstractCegarLoop]: Abstraction has 7375 states and 10560 transitions. [2023-12-21 21:45:53,544 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 7375 states and 10560 transitions. [2023-12-21 21:45:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:53,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:53,545 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, 1, 1, 1, 1, 1, 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 21:45:53,549 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 (35)] Ended with exit code 0 [2023-12-21 21:45:53,745 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 21:45:53,746 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:53,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:53,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1085923817, now seen corresponding path program 1 times [2023-12-21 21:45:53,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:53,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274900866] [2023-12-21 21:45:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:53,747 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 21:45:53,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:53,747 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 21:45:53,748 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 21:45:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:53,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:53,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:53,881 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 21:45:53,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:53,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:53,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274900866] [2023-12-21 21:45:53,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274900866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:53,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:53,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:53,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432958299] [2023-12-21 21:45:53,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:53,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:53,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:53,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:53,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:53,883 INFO L87 Difference]: Start difference. First operand 7375 states and 10560 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:54,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:54,131 INFO L93 Difference]: Finished difference Result 12698 states and 17352 transitions. [2023-12-21 21:45:54,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:54,132 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:54,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:54,140 INFO L225 Difference]: With dead ends: 12698 [2023-12-21 21:45:54,140 INFO L226 Difference]: Without dead ends: 7463 [2023-12-21 21:45:54,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 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 21:45:54,145 INFO L413 NwaCegarLoop]: 4409 mSDtfsCounter, 29 mSDsluCounter, 8810 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 13219 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:54,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 13219 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:45:54,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7463 states. [2023-12-21 21:45:54,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7463 to 7383. [2023-12-21 21:45:54,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7383 states, 7129 states have (on average 1.4380698555197082) internal successors, (10252), 7133 states have internal predecessors, (10252), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2023-12-21 21:45:54,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7383 states to 7383 states and 10522 transitions. [2023-12-21 21:45:54,382 INFO L78 Accepts]: Start accepts. Automaton has 7383 states and 10522 transitions. Word has length 161 [2023-12-21 21:45:54,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:54,383 INFO L495 AbstractCegarLoop]: Abstraction has 7383 states and 10522 transitions. [2023-12-21 21:45:54,383 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:54,383 INFO L276 IsEmpty]: Start isEmpty. Operand 7383 states and 10522 transitions. [2023-12-21 21:45:54,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:54,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:54,384 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, 1, 1, 1, 1, 1, 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 21:45:54,390 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 21:45:54,588 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 21:45:54,588 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:54,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:54,589 INFO L85 PathProgramCache]: Analyzing trace with hash -406651563, now seen corresponding path program 1 times [2023-12-21 21:45:54,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:54,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609383036] [2023-12-21 21:45:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:54,589 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 21:45:54,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:54,590 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 21:45:54,591 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 21:45:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:54,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:54,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:54,719 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 21:45:54,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:54,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:54,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609383036] [2023-12-21 21:45:54,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609383036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:54,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:54,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:54,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301423610] [2023-12-21 21:45:54,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:54,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:54,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:54,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:54,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:54,720 INFO L87 Difference]: Start difference. First operand 7383 states and 10522 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:54,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:54,966 INFO L93 Difference]: Finished difference Result 12690 states and 17244 transitions. [2023-12-21 21:45:54,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:54,967 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:54,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:54,975 INFO L225 Difference]: With dead ends: 12690 [2023-12-21 21:45:54,975 INFO L226 Difference]: Without dead ends: 7447 [2023-12-21 21:45:54,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 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 21:45:54,981 INFO L413 NwaCegarLoop]: 4409 mSDtfsCounter, 20 mSDsluCounter, 8811 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 13220 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:54,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 13220 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:45:54,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7447 states. [2023-12-21 21:45:55,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7447 to 7391. [2023-12-21 21:45:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7391 states, 7137 states have (on average 1.4311335294941852) internal successors, (10214), 7141 states have internal predecessors, (10214), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2023-12-21 21:45:55,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 10484 transitions. [2023-12-21 21:45:55,165 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 10484 transitions. Word has length 161 [2023-12-21 21:45:55,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:55,166 INFO L495 AbstractCegarLoop]: Abstraction has 7391 states and 10484 transitions. [2023-12-21 21:45:55,166 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:55,166 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 10484 transitions. [2023-12-21 21:45:55,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:55,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:55,167 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, 1, 1, 1, 1, 1, 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 21:45:55,171 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 (37)] Ended with exit code 0 [2023-12-21 21:45:55,367 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 21:45:55,368 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:55,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:55,368 INFO L85 PathProgramCache]: Analyzing trace with hash 854265687, now seen corresponding path program 1 times [2023-12-21 21:45:55,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:55,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979347426] [2023-12-21 21:45:55,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:55,369 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 21:45:55,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:55,369 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 21:45:55,370 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 21:45:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:55,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:55,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:55,514 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 21:45:55,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:55,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:55,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979347426] [2023-12-21 21:45:55,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979347426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:55,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:55,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:55,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040891418] [2023-12-21 21:45:55,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:55,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:55,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:55,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:55,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:55,516 INFO L87 Difference]: Start difference. First operand 7391 states and 10484 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:55,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:55,822 INFO L93 Difference]: Finished difference Result 12682 states and 17136 transitions. [2023-12-21 21:45:55,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:55,824 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:55,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:55,832 INFO L225 Difference]: With dead ends: 12682 [2023-12-21 21:45:55,833 INFO L226 Difference]: Without dead ends: 7431 [2023-12-21 21:45:55,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 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 21:45:55,838 INFO L413 NwaCegarLoop]: 4409 mSDtfsCounter, 11 mSDsluCounter, 8812 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 13221 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:55,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 13221 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:45:55,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2023-12-21 21:45:56,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 7399. [2023-12-21 21:45:56,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7399 states, 7145 states have (on average 1.4242127361791463) internal successors, (10176), 7149 states have internal predecessors, (10176), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2023-12-21 21:45:56,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7399 states to 7399 states and 10446 transitions. [2023-12-21 21:45:56,025 INFO L78 Accepts]: Start accepts. Automaton has 7399 states and 10446 transitions. Word has length 161 [2023-12-21 21:45:56,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:56,025 INFO L495 AbstractCegarLoop]: Abstraction has 7399 states and 10446 transitions. [2023-12-21 21:45:56,025 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:56,025 INFO L276 IsEmpty]: Start isEmpty. Operand 7399 states and 10446 transitions. [2023-12-21 21:45:56,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:56,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:56,026 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, 1, 1, 1, 1, 1, 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 21:45:56,031 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 21:45:56,231 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 21:45:56,231 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:56,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:56,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1902361579, now seen corresponding path program 1 times [2023-12-21 21:45:56,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:56,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073403323] [2023-12-21 21:45:56,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:56,232 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 21:45:56,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:56,233 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 21:45:56,233 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 21:45:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:56,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:45:56,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:56,364 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 21:45:56,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:56,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:56,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073403323] [2023-12-21 21:45:56,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073403323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:56,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:56,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:56,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285754299] [2023-12-21 21:45:56,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:56,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:56,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:56,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:56,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:56,367 INFO L87 Difference]: Start difference. First operand 7399 states and 10446 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:56,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:56,606 INFO L93 Difference]: Finished difference Result 12674 states and 17028 transitions. [2023-12-21 21:45:56,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:56,606 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:56,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:56,615 INFO L225 Difference]: With dead ends: 12674 [2023-12-21 21:45:56,615 INFO L226 Difference]: Without dead ends: 7415 [2023-12-21 21:45:56,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 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 21:45:56,620 INFO L413 NwaCegarLoop]: 4409 mSDtfsCounter, 2 mSDsluCounter, 8813 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13222 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:56,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13222 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:45:56,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7415 states. [2023-12-21 21:45:56,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7415 to 7407. [2023-12-21 21:45:56,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7407 states, 7153 states have (on average 1.4173074234586887) internal successors, (10138), 7157 states have internal predecessors, (10138), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2023-12-21 21:45:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7407 states to 7407 states and 10408 transitions. [2023-12-21 21:45:56,862 INFO L78 Accepts]: Start accepts. Automaton has 7407 states and 10408 transitions. Word has length 161 [2023-12-21 21:45:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:56,862 INFO L495 AbstractCegarLoop]: Abstraction has 7407 states and 10408 transitions. [2023-12-21 21:45:56,862 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:56,862 INFO L276 IsEmpty]: Start isEmpty. Operand 7407 states and 10408 transitions. [2023-12-21 21:45:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:56,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:56,863 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, 1, 1, 1, 1, 1, 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 21:45:56,868 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 (39)] Ended with exit code 0 [2023-12-21 21:45:57,068 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 21:45:57,068 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:57,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:57,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2039517335, now seen corresponding path program 1 times [2023-12-21 21:45:57,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:57,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761094237] [2023-12-21 21:45:57,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:57,069 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 21:45:57,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:57,070 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 21:45:57,073 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 21:45:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:57,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:45:57,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:57,318 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 21:45:57,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:57,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:57,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761094237] [2023-12-21 21:45:57,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761094237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:57,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:57,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:57,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543423488] [2023-12-21 21:45:57,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:57,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:57,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:57,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:57,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:57,320 INFO L87 Difference]: Start difference. First operand 7407 states and 10408 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:57,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:57,859 INFO L93 Difference]: Finished difference Result 12675 states and 16839 transitions. [2023-12-21 21:45:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:57,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:57,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:57,869 INFO L225 Difference]: With dead ends: 12675 [2023-12-21 21:45:57,869 INFO L226 Difference]: Without dead ends: 7407 [2023-12-21 21:45:57,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:57,875 INFO L413 NwaCegarLoop]: 4243 mSDtfsCounter, 4515 mSDsluCounter, 8378 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4534 SdHoareTripleChecker+Valid, 12621 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:57,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4534 Valid, 12621 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:45:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7407 states. [2023-12-21 21:45:58,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7407 to 7407. [2023-12-21 21:45:58,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7407 states, 7153 states have (on average 1.4153502027121487) internal successors, (10124), 7157 states have internal predecessors, (10124), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2023-12-21 21:45:58,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7407 states to 7407 states and 10394 transitions. [2023-12-21 21:45:58,060 INFO L78 Accepts]: Start accepts. Automaton has 7407 states and 10394 transitions. Word has length 161 [2023-12-21 21:45:58,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:58,060 INFO L495 AbstractCegarLoop]: Abstraction has 7407 states and 10394 transitions. [2023-12-21 21:45:58,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:58,060 INFO L276 IsEmpty]: Start isEmpty. Operand 7407 states and 10394 transitions. [2023-12-21 21:45:58,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:58,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:58,061 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, 1, 1, 1, 1, 1, 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 21:45:58,066 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 (40)] Ended with exit code 0 [2023-12-21 21:45:58,265 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 21:45:58,266 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:58,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:58,266 INFO L85 PathProgramCache]: Analyzing trace with hash 194150169, now seen corresponding path program 1 times [2023-12-21 21:45:58,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:58,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105142697] [2023-12-21 21:45:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:58,267 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 21:45:58,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:58,268 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 21:45:58,268 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 21:45:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:58,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:45:58,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:58,561 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 21:45:58,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:58,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:58,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105142697] [2023-12-21 21:45:58,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105142697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:58,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:58,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:58,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129760774] [2023-12-21 21:45:58,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:58,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:58,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:58,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:58,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:58,562 INFO L87 Difference]: Start difference. First operand 7407 states and 10394 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:59,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:59,115 INFO L93 Difference]: Finished difference Result 12675 states and 16811 transitions. [2023-12-21 21:45:59,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:45:59,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:45:59,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:59,124 INFO L225 Difference]: With dead ends: 12675 [2023-12-21 21:45:59,124 INFO L226 Difference]: Without dead ends: 7407 [2023-12-21 21:45:59,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 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 21:45:59,129 INFO L413 NwaCegarLoop]: 4240 mSDtfsCounter, 4502 mSDsluCounter, 8374 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4521 SdHoareTripleChecker+Valid, 12614 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:59,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4521 Valid, 12614 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:45:59,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7407 states. [2023-12-21 21:45:59,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7407 to 7407. [2023-12-21 21:45:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7407 states, 7153 states have (on average 1.4133929819656088) internal successors, (10110), 7157 states have internal predecessors, (10110), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2023-12-21 21:45:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7407 states to 7407 states and 10380 transitions. [2023-12-21 21:45:59,314 INFO L78 Accepts]: Start accepts. Automaton has 7407 states and 10380 transitions. Word has length 161 [2023-12-21 21:45:59,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:59,315 INFO L495 AbstractCegarLoop]: Abstraction has 7407 states and 10380 transitions. [2023-12-21 21:45:59,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:45:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 7407 states and 10380 transitions. [2023-12-21 21:45:59,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:45:59,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:59,316 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, 1, 1, 1, 1, 1, 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 21:45:59,320 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 21:45:59,517 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 21:45:59,517 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:59,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:59,518 INFO L85 PathProgramCache]: Analyzing trace with hash 895750043, now seen corresponding path program 1 times [2023-12-21 21:45:59,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:59,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543088982] [2023-12-21 21:45:59,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:59,518 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 21:45:59,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:59,519 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 21:45:59,520 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 21:45:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:59,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:45:59,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:59,767 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 21:45:59,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:59,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:59,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543088982] [2023-12-21 21:45:59,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543088982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:59,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:59,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:59,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278606867] [2023-12-21 21:45:59,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:59,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:59,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:59,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:59,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:59,769 INFO L87 Difference]: Start difference. First operand 7407 states and 10380 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:46:00,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:46:00,496 INFO L93 Difference]: Finished difference Result 13013 states and 17210 transitions. [2023-12-21 21:46:00,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:46:00,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-12-21 21:46:00,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:46:00,504 INFO L225 Difference]: With dead ends: 13013 [2023-12-21 21:46:00,504 INFO L226 Difference]: Without dead ends: 7745 [2023-12-21 21:46:00,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 157 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 21:46:00,509 INFO L413 NwaCegarLoop]: 4239 mSDtfsCounter, 4619 mSDsluCounter, 8370 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4638 SdHoareTripleChecker+Valid, 12609 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:46:00,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4638 Valid, 12609 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 21:46:00,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7745 states. [2023-12-21 21:46:00,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7745 to 7677. [2023-12-21 21:46:00,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7677 states, 7419 states have (on average 1.3974929235746056) internal successors, (10368), 7423 states have internal predecessors, (10368), 134 states have call successors, (134), 120 states have call predecessors, (134), 122 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2023-12-21 21:46:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7677 states to 7677 states and 10638 transitions. [2023-12-21 21:46:00,707 INFO L78 Accepts]: Start accepts. Automaton has 7677 states and 10638 transitions. Word has length 161 [2023-12-21 21:46:00,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:46:00,707 INFO L495 AbstractCegarLoop]: Abstraction has 7677 states and 10638 transitions. [2023-12-21 21:46:00,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:46:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 7677 states and 10638 transitions. [2023-12-21 21:46:00,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 21:46:00,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:46:00,708 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, 1, 1, 1, 1, 1, 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 21:46:00,713 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 21:46:00,912 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 21:46:00,913 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:46:00,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:46:00,913 INFO L85 PathProgramCache]: Analyzing trace with hash -909688291, now seen corresponding path program 1 times [2023-12-21 21:46:00,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:46:00,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387320390] [2023-12-21 21:46:00,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:46:00,914 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 21:46:00,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:46:00,915 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 21:46:00,915 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 21:46:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:46:01,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:46:01,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:46:01,157 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 21:46:01,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:46:01,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:46:01,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387320390] [2023-12-21 21:46:01,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387320390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:46:01,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:46:01,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:46:01,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296103510] [2023-12-21 21:46:01,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:46:01,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:46:01,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:46:01,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:46:01,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:46:01,158 INFO L87 Difference]: Start difference. First operand 7677 states and 10638 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 21:46:01,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:46:01,607 INFO L93 Difference]: Finished difference Result 18674 states and 23946 transitions. [2023-12-21 21:46:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:46:01,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 161 [2023-12-21 21:46:01,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:46:01,623 INFO L225 Difference]: With dead ends: 18674 [2023-12-21 21:46:01,623 INFO L226 Difference]: Without dead ends: 13137 [2023-12-21 21:46:01,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 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 21:46:01,629 INFO L413 NwaCegarLoop]: 4399 mSDtfsCounter, 4276 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4276 SdHoareTripleChecker+Valid, 4802 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:46:01,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4276 Valid, 4802 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:46:01,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13137 states. [2023-12-21 21:46:01,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13137 to 13133. [2023-12-21 21:46:02,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13133 states, 12623 states have (on average 1.3149013705141408) internal successors, (16598), 12633 states have internal predecessors, (16598), 264 states have call successors, (264), 240 states have call predecessors, (264), 244 states have return successors, (268), 260 states have call predecessors, (268), 264 states have call successors, (268) [2023-12-21 21:46:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13133 states to 13133 states and 17130 transitions. [2023-12-21 21:46:02,018 INFO L78 Accepts]: Start accepts. Automaton has 13133 states and 17130 transitions. Word has length 161 [2023-12-21 21:46:02,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:46:02,019 INFO L495 AbstractCegarLoop]: Abstraction has 13133 states and 17130 transitions. [2023-12-21 21:46:02,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 21:46:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand 13133 states and 17130 transitions. [2023-12-21 21:46:02,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-21 21:46:02,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:46:02,025 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, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:46:02,030 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 (43)] Forceful destruction successful, exit code 0 [2023-12-21 21:46:02,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:46:02,230 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:46:02,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:46:02,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1858736192, now seen corresponding path program 1 times [2023-12-21 21:46:02,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:46:02,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984440358] [2023-12-21 21:46:02,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:46:02,231 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 21:46:02,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:46:02,232 INFO L229 MonitoredProcess]: Starting monitored process 44 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 21:46:02,232 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 (44)] Waiting until timeout for monitored process [2023-12-21 21:46:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:46:02,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:46:02,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:46:02,597 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-21 21:46:02,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:46:02,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:46:02,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984440358] [2023-12-21 21:46:02,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984440358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:46:02,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:46:02,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:46:02,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786231757] [2023-12-21 21:46:02,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:46:02,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:46:02,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:46:02,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:46:02,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:46:02,598 INFO L87 Difference]: Start difference. First operand 13133 states and 17130 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:46:03,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:46:03,765 INFO L93 Difference]: Finished difference Result 34857 states and 43052 transitions. [2023-12-21 21:46:03,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:46:03,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 259 [2023-12-21 21:46:03,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:46:03,795 INFO L225 Difference]: With dead ends: 34857 [2023-12-21 21:46:03,795 INFO L226 Difference]: Without dead ends: 23865 [2023-12-21 21:46:03,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 257 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 21:46:03,805 INFO L413 NwaCegarLoop]: 4344 mSDtfsCounter, 4624 mSDsluCounter, 4559 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4629 SdHoareTripleChecker+Valid, 8903 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:46:03,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4629 Valid, 8903 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:46:03,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23865 states. [2023-12-21 21:46:04,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23865 to 23863. [2023-12-21 21:46:04,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23863 states, 22865 states have (on average 1.2600043734966104) internal successors, (28810), 22891 states have internal predecessors, (28810), 508 states have call successors, (508), 464 states have call predecessors, (508), 488 states have return successors, (556), 508 states have call predecessors, (556), 508 states have call successors, (556) [2023-12-21 21:46:04,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23863 states to 23863 states and 29874 transitions. [2023-12-21 21:46:04,603 INFO L78 Accepts]: Start accepts. Automaton has 23863 states and 29874 transitions. Word has length 259 [2023-12-21 21:46:04,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:46:04,603 INFO L495 AbstractCegarLoop]: Abstraction has 23863 states and 29874 transitions. [2023-12-21 21:46:04,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:46:04,603 INFO L276 IsEmpty]: Start isEmpty. Operand 23863 states and 29874 transitions. [2023-12-21 21:46:04,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-12-21 21:46:04,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:46:04,613 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:46:04,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2023-12-21 21:46:04,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:46:04,819 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:46:04,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:46:04,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1606475653, now seen corresponding path program 1 times [2023-12-21 21:46:04,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:46:04,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292450716] [2023-12-21 21:46:04,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:46:04,820 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 21:46:04,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:46:04,820 INFO L229 MonitoredProcess]: Starting monitored process 45 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 21:46:04,821 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 (45)] Waiting until timeout for monitored process [2023-12-21 21:46:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:46:04,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:46:04,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:46:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-21 21:46:05,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:46:05,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:46:05,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292450716] [2023-12-21 21:46:05,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292450716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:46:05,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:46:05,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:46:05,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678698773] [2023-12-21 21:46:05,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:46:05,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:46:05,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:46:05,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:46:05,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:46:05,195 INFO L87 Difference]: Start difference. First operand 23863 states and 29874 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:46:07,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:46:07,004 INFO L93 Difference]: Finished difference Result 66293 states and 80398 transitions. [2023-12-21 21:46:07,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:46:07,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 261 [2023-12-21 21:46:07,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:46:07,063 INFO L225 Difference]: With dead ends: 66293 [2023-12-21 21:46:07,063 INFO L226 Difference]: Without dead ends: 44571 [2023-12-21 21:46:07,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 259 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 21:46:07,082 INFO L413 NwaCegarLoop]: 4490 mSDtfsCounter, 4596 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 9172 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:46:07,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4601 Valid, 9172 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:46:07,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44571 states. [2023-12-21 21:46:08,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44571 to 44569. [2023-12-21 21:46:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44569 states, 42624 states have (on average 1.2285566816816818) internal successors, (52366), 42683 states have internal predecessors, (52366), 983 states have call successors, (983), 896 states have call predecessors, (983), 960 states have return successors, (1119), 991 states have call predecessors, (1119), 983 states have call successors, (1119) [2023-12-21 21:46:08,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44569 states to 44569 states and 54468 transitions. [2023-12-21 21:46:08,803 INFO L78 Accepts]: Start accepts. Automaton has 44569 states and 54468 transitions. Word has length 261 [2023-12-21 21:46:08,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:46:08,804 INFO L495 AbstractCegarLoop]: Abstraction has 44569 states and 54468 transitions. [2023-12-21 21:46:08,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:46:08,804 INFO L276 IsEmpty]: Start isEmpty. Operand 44569 states and 54468 transitions. [2023-12-21 21:46:08,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-12-21 21:46:08,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:46:08,820 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:46:08,825 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 (45)] Ended with exit code 0 [2023-12-21 21:46:09,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:46:09,026 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:46:09,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:46:09,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1762717831, now seen corresponding path program 1 times [2023-12-21 21:46:09,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:46:09,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26060743] [2023-12-21 21:46:09,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:46:09,027 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 21:46:09,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:46:09,028 INFO L229 MonitoredProcess]: Starting monitored process 46 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 21:46:09,029 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 (46)] Waiting until timeout for monitored process [2023-12-21 21:46:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:46:09,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:46:09,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:46:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-21 21:46:09,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:46:09,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:46:09,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26060743] [2023-12-21 21:46:09,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26060743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:46:09,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:46:09,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:46:09,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560431937] [2023-12-21 21:46:09,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:46:09,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:46:09,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:46:09,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:46:09,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:46:09,292 INFO L87 Difference]: Start difference. First operand 44569 states and 54468 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:46:10,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:46:10,836 INFO L93 Difference]: Finished difference Result 86983 states and 104917 transitions. [2023-12-21 21:46:10,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:46:10,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 261 [2023-12-21 21:46:10,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:46:10,888 INFO L225 Difference]: With dead ends: 86983 [2023-12-21 21:46:10,888 INFO L226 Difference]: Without dead ends: 44555 [2023-12-21 21:46:10,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 259 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 21:46:10,910 INFO L413 NwaCegarLoop]: 4399 mSDtfsCounter, 479 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 8356 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:46:10,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 8356 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:46:10,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44555 states. [2023-12-21 21:46:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44555 to 44555. [2023-12-21 21:46:12,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44555 states, 42613 states have (on average 1.2283810104897566) internal successors, (52345), 42671 states have internal predecessors, (52345), 980 states have call successors, (980), 896 states have call predecessors, (980), 960 states have return successors, (1116), 988 states have call predecessors, (1116), 980 states have call successors, (1116) [2023-12-21 21:46:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44555 states to 44555 states and 54441 transitions. [2023-12-21 21:46:12,884 INFO L78 Accepts]: Start accepts. Automaton has 44555 states and 54441 transitions. Word has length 261 [2023-12-21 21:46:12,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:46:12,884 INFO L495 AbstractCegarLoop]: Abstraction has 44555 states and 54441 transitions. [2023-12-21 21:46:12,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:46:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 44555 states and 54441 transitions. [2023-12-21 21:46:12,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-21 21:46:12,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:46:12,899 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:46:12,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2023-12-21 21:46:13,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:46:13,100 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:46:13,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:46:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1408283392, now seen corresponding path program 1 times [2023-12-21 21:46:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:46:13,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919171880] [2023-12-21 21:46:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:46:13,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:46:13,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:46:13,107 INFO L229 MonitoredProcess]: Starting monitored process 47 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 21:46:13,108 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 (47)] Waiting until timeout for monitored process [2023-12-21 21:46:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:46:13,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:46:13,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:46:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-21 21:46:13,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:46:13,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:46:13,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919171880] [2023-12-21 21:46:13,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919171880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:46:13,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:46:13,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:46:13,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876545544] [2023-12-21 21:46:13,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:46:13,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:46:13,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:46:13,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:46:13,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:46:13,492 INFO L87 Difference]: Start difference. First operand 44555 states and 54441 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:46:16,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:46:16,910 INFO L93 Difference]: Finished difference Result 127396 states and 152947 transitions. [2023-12-21 21:46:16,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:46:16,910 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), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 263 [2023-12-21 21:46:16,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:46:17,033 INFO L225 Difference]: With dead ends: 127396 [2023-12-21 21:46:17,033 INFO L226 Difference]: Without dead ends: 84982 [2023-12-21 21:46:17,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 261 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 21:46:17,074 INFO L413 NwaCegarLoop]: 4476 mSDtfsCounter, 4589 mSDsluCounter, 4664 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4595 SdHoareTripleChecker+Valid, 9140 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:46:17,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4595 Valid, 9140 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:46:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84982 states. [2023-12-21 21:46:20,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84982 to 84980. [2023-12-21 21:46:20,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84980 states, 81195 states have (on average 1.210850421824004) internal successors, (98315), 81326 states have internal predecessors, (98315), 1895 states have call successors, (1895), 1728 states have call predecessors, (1895), 1888 states have return successors, (2223), 1927 states have call predecessors, (2223), 1895 states have call successors, (2223) [2023-12-21 21:46:20,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84980 states to 84980 states and 102433 transitions. [2023-12-21 21:46:20,467 INFO L78 Accepts]: Start accepts. Automaton has 84980 states and 102433 transitions. Word has length 263 [2023-12-21 21:46:20,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:46:20,468 INFO L495 AbstractCegarLoop]: Abstraction has 84980 states and 102433 transitions. [2023-12-21 21:46:20,468 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), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:46:20,468 INFO L276 IsEmpty]: Start isEmpty. Operand 84980 states and 102433 transitions. [2023-12-21 21:46:20,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-21 21:46:20,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:46:20,496 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:46:20,501 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 (47)] Ended with exit code 0 [2023-12-21 21:46:20,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:46:20,697 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:46:20,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:46:20,697 INFO L85 PathProgramCache]: Analyzing trace with hash -859743170, now seen corresponding path program 1 times [2023-12-21 21:46:20,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:46:20,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099993514] [2023-12-21 21:46:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:46:20,697 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 21:46:20,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:46:20,698 INFO L229 MonitoredProcess]: Starting monitored process 48 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 21:46:20,699 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 (48)] Waiting until timeout for monitored process [2023-12-21 21:46:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:46:20,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:46:20,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:46:20,857 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-21 21:46:20,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:46:20,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:46:20,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099993514] [2023-12-21 21:46:20,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099993514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:46:20,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:46:20,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:46:20,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346186787] [2023-12-21 21:46:20,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:46:20,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:46:20,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:46:20,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:46:20,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:46:20,858 INFO L87 Difference]: Start difference. First operand 84980 states and 102433 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:46:24,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:46:24,297 INFO L93 Difference]: Finished difference Result 167806 states and 200850 transitions. [2023-12-21 21:46:24,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:46:24,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 263 [2023-12-21 21:46:24,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:46:24,424 INFO L225 Difference]: With dead ends: 167806 [2023-12-21 21:46:24,424 INFO L226 Difference]: Without dead ends: 84967 [2023-12-21 21:46:24,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 261 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 21:46:24,481 INFO L413 NwaCegarLoop]: 4398 mSDtfsCounter, 477 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 8355 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:46:24,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 8355 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:46:24,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84967 states. [2023-12-21 21:46:27,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84967 to 84967. [2023-12-21 21:46:27,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84967 states, 81185 states have (on average 1.2107655355053273) internal successors, (98296), 81315 states have internal predecessors, (98296), 1892 states have call successors, (1892), 1728 states have call predecessors, (1892), 1888 states have return successors, (2220), 1924 states have call predecessors, (2220), 1892 states have call successors, (2220) [2023-12-21 21:46:27,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84967 states to 84967 states and 102408 transitions. [2023-12-21 21:46:27,955 INFO L78 Accepts]: Start accepts. Automaton has 84967 states and 102408 transitions. Word has length 263 [2023-12-21 21:46:27,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:46:27,955 INFO L495 AbstractCegarLoop]: Abstraction has 84967 states and 102408 transitions. [2023-12-21 21:46:27,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:46:27,955 INFO L276 IsEmpty]: Start isEmpty. Operand 84967 states and 102408 transitions. [2023-12-21 21:46:27,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-21 21:46:27,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:46:27,979 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:46:27,985 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 (48)] Forceful destruction successful, exit code 0 [2023-12-21 21:46:28,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:46:28,185 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:46:28,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:46:28,186 INFO L85 PathProgramCache]: Analyzing trace with hash 475374981, now seen corresponding path program 1 times [2023-12-21 21:46:28,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:46:28,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101227995] [2023-12-21 21:46:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:46:28,186 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 21:46:28,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:46:28,187 INFO L229 MonitoredProcess]: Starting monitored process 49 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 21:46:28,188 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 (49)] Waiting until timeout for monitored process [2023-12-21 21:46:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:46:28,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:46:28,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:46:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-21 21:46:28,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:46:28,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:46:28,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101227995] [2023-12-21 21:46:28,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101227995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:46:28,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:46:28,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:46:28,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722237946] [2023-12-21 21:46:28,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:46:28,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:46:28,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:46:28,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:46:28,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:46:28,565 INFO L87 Difference]: Start difference. First operand 84967 states and 102408 transitions. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:46:34,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:46:34,967 INFO L93 Difference]: Finished difference Result 288503 states and 343153 transitions. [2023-12-21 21:46:34,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:46:34,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 265 [2023-12-21 21:46:34,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:46:35,399 INFO L225 Difference]: With dead ends: 288503 [2023-12-21 21:46:35,399 INFO L226 Difference]: Without dead ends: 205677 [2023-12-21 21:46:35,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 263 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 21:46:35,455 INFO L413 NwaCegarLoop]: 4492 mSDtfsCounter, 4596 mSDsluCounter, 4662 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4602 SdHoareTripleChecker+Valid, 9154 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:46:35,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4602 Valid, 9154 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:46:35,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205677 states. [2023-12-21 21:46:42,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205677 to 202123. [2023-12-21 21:46:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202123 states, 193346 states have (on average 1.1946665563290682) internal successors, (230984), 194373 states have internal predecessors, (230984), 3655 states have call successors, (3655), 3328 states have call predecessors, (3655), 5120 states have return successors, (5840), 4423 states have call predecessors, (5840), 3655 states have call successors, (5840) [2023-12-21 21:46:42,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202123 states to 202123 states and 240479 transitions. [2023-12-21 21:46:42,848 INFO L78 Accepts]: Start accepts. Automaton has 202123 states and 240479 transitions. Word has length 265 [2023-12-21 21:46:42,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:46:42,848 INFO L495 AbstractCegarLoop]: Abstraction has 202123 states and 240479 transitions. [2023-12-21 21:46:42,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:46:42,849 INFO L276 IsEmpty]: Start isEmpty. Operand 202123 states and 240479 transitions. [2023-12-21 21:46:42,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-21 21:46:42,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:46:42,911 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:46:42,919 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 (49)] Ended with exit code 0 [2023-12-21 21:46:43,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 21:46:43,116 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:46:43,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:46:43,117 INFO L85 PathProgramCache]: Analyzing trace with hash 300252679, now seen corresponding path program 1 times [2023-12-21 21:46:43,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:46:43,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277379383] [2023-12-21 21:46:43,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:46:43,117 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 21:46:43,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:46:43,118 INFO L229 MonitoredProcess]: Starting monitored process 50 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 21:46:43,119 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 (50)] Waiting until timeout for monitored process [2023-12-21 21:46:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:46:43,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:46:43,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:46:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-21 21:46:43,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:46:43,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:46:43,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277379383] [2023-12-21 21:46:43,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277379383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:46:43,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:46:43,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:46:43,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770094327] [2023-12-21 21:46:43,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:46:43,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:46:43,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:46:43,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:46:43,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:46:43,294 INFO L87 Difference]: Start difference. First operand 202123 states and 240479 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:46:49,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:46:49,863 INFO L93 Difference]: Finished difference Result 402094 states and 476946 transitions. [2023-12-21 21:46:49,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:46:49,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 265 [2023-12-21 21:46:49,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted.