/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/eca-rers2012/Problem14_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 12:09:55,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 12:09:55,076 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 12:09:55,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 12:09:55,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 12:09:55,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 12:09:55,103 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 12:09:55,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 12:09:55,104 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 12:09:55,107 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 12:09:55,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 12:09:55,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 12:09:55,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 12:09:55,109 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 12:09:55,109 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 12:09:55,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 12:09:55,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 12:09:55,110 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 12:09:55,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 12:09:55,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 12:09:55,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 12:09:55,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 12:09:55,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 12:09:55,111 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 12:09:55,111 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 12:09:55,111 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 12:09:55,111 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 12:09:55,111 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 12:09:55,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 12:09:55,111 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 12:09:55,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 12:09:55,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 12:09:55,113 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 12:09:55,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 12:09:55,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 12:09:55,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 12:09:55,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 12:09:55,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 12:09:55,113 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 12:09:55,113 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 12:09:55,113 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 12:09:55,114 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 12:09:55,114 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 12:09:55,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 12:09:55,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 12:09:55,114 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 12:09:55,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 12:09:55,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 12:09:55,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 12:09:55,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 12:09:55,320 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 12:09:55,320 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 12:09:55,322 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07.c [2023-12-22 12:09:56,324 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 12:09:56,585 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 12:09:56,586 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label07.c [2023-12-22 12:09:56,615 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc1ffed36/5c1c203b3188455b870b5bd80b9ac0e5/FLAG6b6e56c18 [2023-12-22 12:09:56,626 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc1ffed36/5c1c203b3188455b870b5bd80b9ac0e5 [2023-12-22 12:09:56,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 12:09:56,629 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 12:09:56,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 12:09:56,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 12:09:56,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 12:09:56,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:09:56" (1/1) ... [2023-12-22 12:09:56,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74fb403b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:56, skipping insertion in model container [2023-12-22 12:09:56,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:09:56" (1/1) ... [2023-12-22 12:09:56,685 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 12:09:56,837 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label07.c[4912,4925] [2023-12-22 12:09:56,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 12:09:56,989 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 12:09:57,007 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label07.c[4912,4925] [2023-12-22 12:09:57,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 12:09:57,172 INFO L206 MainTranslator]: Completed translation [2023-12-22 12:09:57,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:57 WrapperNode [2023-12-22 12:09:57,173 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 12:09:57,174 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 12:09:57,174 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 12:09:57,174 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 12:09:57,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:57" (1/1) ... [2023-12-22 12:09:57,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:57" (1/1) ... [2023-12-22 12:09:57,261 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 857 [2023-12-22 12:09:57,261 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 12:09:57,262 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 12:09:57,262 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 12:09:57,262 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 12:09:57,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:57" (1/1) ... [2023-12-22 12:09:57,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:57" (1/1) ... [2023-12-22 12:09:57,299 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:57" (1/1) ... [2023-12-22 12:09:57,337 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]. [2023-12-22 12:09:57,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:57" (1/1) ... [2023-12-22 12:09:57,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:57" (1/1) ... [2023-12-22 12:09:57,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:57" (1/1) ... [2023-12-22 12:09:57,370 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:57" (1/1) ... [2023-12-22 12:09:57,376 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:57" (1/1) ... [2023-12-22 12:09:57,380 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:57" (1/1) ... [2023-12-22 12:09:57,387 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 12:09:57,388 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 12:09:57,388 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 12:09:57,388 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 12:09:57,388 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:57" (1/1) ... [2023-12-22 12:09:57,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 12:09:57,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 12:09:57,449 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) [2023-12-22 12:09:57,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-22 12:09:57,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 12:09:57,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 12:09:57,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 12:09:57,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 12:09:57,531 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 12:09:57,533 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 12:10:00,244 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 12:10:00,289 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 12:10:00,290 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 12:10:00,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:10:00 BoogieIcfgContainer [2023-12-22 12:10:00,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 12:10:00,293 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 12:10:00,293 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 12:10:00,296 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 12:10:00,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:09:56" (1/3) ... [2023-12-22 12:10:00,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51868fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:10:00, skipping insertion in model container [2023-12-22 12:10:00,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:57" (2/3) ... [2023-12-22 12:10:00,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51868fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:10:00, skipping insertion in model container [2023-12-22 12:10:00,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:10:00" (3/3) ... [2023-12-22 12:10:00,299 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label07.c [2023-12-22 12:10:00,315 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 12:10:00,315 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 12:10:00,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 12:10:00,382 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;@56d87f67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 12:10:00,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 12:10:00,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:00,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-22 12:10:00,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:10:00,402 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] [2023-12-22 12:10:00,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:10:00,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:10:00,411 INFO L85 PathProgramCache]: Analyzing trace with hash 52230512, now seen corresponding path program 1 times [2023-12-22 12:10:00,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:10:00,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447354931] [2023-12-22 12:10:00,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:10:00,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:10:00,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:10:00,434 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) [2023-12-22 12:10:00,435 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 [2023-12-22 12:10:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:10:00,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 12:10:00,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:10:00,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 12:10:00,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:10:00,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:10:00,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447354931] [2023-12-22 12:10:00,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447354931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:10:00,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:10:00,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 12:10:00,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120514799] [2023-12-22 12:10:00,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:10:00,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 12:10:00,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:10:00,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 12:10:00,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 12:10:00,596 INFO L87 Difference]: Start difference. First operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:00,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:10:00,644 INFO L93 Difference]: Finished difference Result 365 states and 719 transitions. [2023-12-22 12:10:00,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 12:10:00,646 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-22 12:10:00,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:10:00,657 INFO L225 Difference]: With dead ends: 365 [2023-12-22 12:10:00,657 INFO L226 Difference]: Without dead ends: 181 [2023-12-22 12:10:00,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 12:10:00,662 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 12:10:00,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 295 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 12:10:00,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-22 12:10:00,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-12-22 12:10:00,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.6388888888888888) internal successors, (295), 180 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:00,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 295 transitions. [2023-12-22 12:10:00,712 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 295 transitions. Word has length 46 [2023-12-22 12:10:00,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:10:00,712 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 295 transitions. [2023-12-22 12:10:00,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:00,713 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 295 transitions. [2023-12-22 12:10:00,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-22 12:10:00,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:10:00,714 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] [2023-12-22 12:10:00,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 12:10:00,916 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 [2023-12-22 12:10:00,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:10:00,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:10:00,918 INFO L85 PathProgramCache]: Analyzing trace with hash 996336860, now seen corresponding path program 1 times [2023-12-22 12:10:00,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:10:00,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116880956] [2023-12-22 12:10:00,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:10:00,919 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 [2023-12-22 12:10:00,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:10:00,931 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) [2023-12-22 12:10:00,933 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 [2023-12-22 12:10:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:10:00,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:10:00,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:10:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 12:10:01,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:10:01,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:10:01,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116880956] [2023-12-22 12:10:01,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116880956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:10:01,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:10:01,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 12:10:01,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010634969] [2023-12-22 12:10:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:10:01,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:10:01,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:10:01,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:10:01,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:10:01,114 INFO L87 Difference]: Start difference. First operand 181 states and 295 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:04,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:10:04,159 INFO L93 Difference]: Finished difference Result 539 states and 882 transitions. [2023-12-22 12:10:04,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:10:04,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-22 12:10:04,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:10:04,161 INFO L225 Difference]: With dead ends: 539 [2023-12-22 12:10:04,161 INFO L226 Difference]: Without dead ends: 359 [2023-12-22 12:10:04,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:10:04,163 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 152 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-22 12:10:04,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 87 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-22 12:10:04,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-22 12:10:04,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2023-12-22 12:10:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.4217877094972067) internal successors, (509), 358 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 509 transitions. [2023-12-22 12:10:04,183 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 509 transitions. Word has length 46 [2023-12-22 12:10:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:10:04,183 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 509 transitions. [2023-12-22 12:10:04,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 509 transitions. [2023-12-22 12:10:04,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-22 12:10:04,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:10:04,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:10:04,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-22 12:10:04,388 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 [2023-12-22 12:10:04,389 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:10:04,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:10:04,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1537004027, now seen corresponding path program 1 times [2023-12-22 12:10:04,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:10:04,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997208304] [2023-12-22 12:10:04,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:10:04,390 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 [2023-12-22 12:10:04,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:10:04,391 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) [2023-12-22 12:10:04,393 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 [2023-12-22 12:10:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:10:04,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 12:10:04,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:10:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 12:10:04,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:10:04,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:10:04,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997208304] [2023-12-22 12:10:04,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997208304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:10:04,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:10:04,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 12:10:04,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373208105] [2023-12-22 12:10:04,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:10:04,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:10:04,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:10:04,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:10:04,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:10:04,760 INFO L87 Difference]: Start difference. First operand 359 states and 509 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:06,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:10:06,991 INFO L93 Difference]: Finished difference Result 895 states and 1231 transitions. [2023-12-22 12:10:06,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:10:06,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-22 12:10:06,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:10:06,994 INFO L225 Difference]: With dead ends: 895 [2023-12-22 12:10:06,994 INFO L226 Difference]: Without dead ends: 537 [2023-12-22 12:10:06,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:10:06,995 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 112 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-22 12:10:06,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 112 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-22 12:10:06,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2023-12-22 12:10:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2023-12-22 12:10:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.3041044776119404) internal successors, (699), 536 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 699 transitions. [2023-12-22 12:10:07,006 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 699 transitions. Word has length 115 [2023-12-22 12:10:07,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:10:07,007 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 699 transitions. [2023-12-22 12:10:07,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:07,007 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 699 transitions. [2023-12-22 12:10:07,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-22 12:10:07,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:10:07,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:10:07,014 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 [2023-12-22 12:10:07,214 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 [2023-12-22 12:10:07,214 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:10:07,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:10:07,215 INFO L85 PathProgramCache]: Analyzing trace with hash -300212843, now seen corresponding path program 1 times [2023-12-22 12:10:07,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:10:07,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721576] [2023-12-22 12:10:07,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:10:07,216 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 [2023-12-22 12:10:07,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:10:07,217 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) [2023-12-22 12:10:07,221 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 (5)] Waiting until timeout for monitored process [2023-12-22 12:10:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:10:07,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:10:07,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:10:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 12:10:07,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:10:07,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:10:07,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721576] [2023-12-22 12:10:07,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:10:07,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:10:07,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 12:10:07,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903469646] [2023-12-22 12:10:07,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:10:07,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:10:07,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:10:07,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:10:07,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:10:07,482 INFO L87 Difference]: Start difference. First operand 537 states and 699 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:10,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:10:10,939 INFO L93 Difference]: Finished difference Result 1251 states and 1690 transitions. [2023-12-22 12:10:10,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:10:10,940 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-22 12:10:10,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:10:10,943 INFO L225 Difference]: With dead ends: 1251 [2023-12-22 12:10:10,943 INFO L226 Difference]: Without dead ends: 893 [2023-12-22 12:10:10,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:10:10,944 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 75 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-22 12:10:10,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 118 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-22 12:10:10,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2023-12-22 12:10:10,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 893. [2023-12-22 12:10:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 892 states have (on average 1.243273542600897) internal successors, (1109), 892 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1109 transitions. [2023-12-22 12:10:10,964 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1109 transitions. Word has length 151 [2023-12-22 12:10:10,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:10:10,965 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1109 transitions. [2023-12-22 12:10:10,965 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:10,965 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1109 transitions. [2023-12-22 12:10:10,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-22 12:10:10,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:10:10,972 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2023-12-22 12:10:10,982 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 [2023-12-22 12:10:11,177 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 [2023-12-22 12:10:11,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:10:11,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:10:11,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1912834312, now seen corresponding path program 1 times [2023-12-22 12:10:11,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:10:11,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594828422] [2023-12-22 12:10:11,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:10:11,180 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 [2023-12-22 12:10:11,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:10:11,181 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) [2023-12-22 12:10:11,214 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 [2023-12-22 12:10:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:10:11,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 12:10:11,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:10:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-22 12:10:11,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:10:11,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:10:11,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594828422] [2023-12-22 12:10:11,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594828422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:10:11,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:10:11,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 12:10:11,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239048362] [2023-12-22 12:10:11,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:10:11,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 12:10:11,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:10:11,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 12:10:11,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:10:11,929 INFO L87 Difference]: Start difference. First operand 893 states and 1109 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:14,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:10:14,516 INFO L93 Difference]: Finished difference Result 1280 states and 1658 transitions. [2023-12-22 12:10:14,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 12:10:14,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2023-12-22 12:10:14,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:10:14,519 INFO L225 Difference]: With dead ends: 1280 [2023-12-22 12:10:14,519 INFO L226 Difference]: Without dead ends: 715 [2023-12-22 12:10:14,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:10:14,521 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 101 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-22 12:10:14,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 117 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-22 12:10:14,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-12-22 12:10:14,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2023-12-22 12:10:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 1.2324929971988796) internal successors, (880), 714 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 880 transitions. [2023-12-22 12:10:14,532 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 880 transitions. Word has length 195 [2023-12-22 12:10:14,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:10:14,533 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 880 transitions. [2023-12-22 12:10:14,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:14,533 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 880 transitions. [2023-12-22 12:10:14,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-12-22 12:10:14,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:10:14,535 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 12:10:14,556 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 [2023-12-22 12:10:14,739 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 [2023-12-22 12:10:14,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:10:14,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:10:14,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1462324111, now seen corresponding path program 1 times [2023-12-22 12:10:14,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:10:14,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120716818] [2023-12-22 12:10:14,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:10:14,741 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 [2023-12-22 12:10:14,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:10:14,742 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) [2023-12-22 12:10:14,766 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 [2023-12-22 12:10:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:10:14,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 12:10:14,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:10:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 134 proven. 131 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-22 12:10:15,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:10:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-22 12:10:15,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:10:15,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120716818] [2023-12-22 12:10:15,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120716818] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:10:15,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:10:15,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 12:10:15,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739371267] [2023-12-22 12:10:15,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:10:15,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:10:15,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:10:15,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:10:15,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 12:10:15,845 INFO L87 Difference]: Start difference. First operand 715 states and 880 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:21,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:10:21,999 INFO L93 Difference]: Finished difference Result 1429 states and 1919 transitions. [2023-12-22 12:10:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:10:22,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 323 [2023-12-22 12:10:22,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:10:22,003 INFO L225 Difference]: With dead ends: 1429 [2023-12-22 12:10:22,003 INFO L226 Difference]: Without dead ends: 1071 [2023-12-22 12:10:22,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 12:10:22,005 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 122 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-22 12:10:22,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 264 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-22 12:10:22,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2023-12-22 12:10:22,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2023-12-22 12:10:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 1.2794392523364486) internal successors, (1369), 1070 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1369 transitions. [2023-12-22 12:10:22,020 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1369 transitions. Word has length 323 [2023-12-22 12:10:22,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:10:22,020 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1369 transitions. [2023-12-22 12:10:22,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:22,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1369 transitions. [2023-12-22 12:10:22,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-22 12:10:22,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:10:22,023 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 12:10:22,030 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 (7)] Forceful destruction successful, exit code 0 [2023-12-22 12:10:22,228 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 [2023-12-22 12:10:22,228 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:10:22,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:10:22,229 INFO L85 PathProgramCache]: Analyzing trace with hash 337090486, now seen corresponding path program 1 times [2023-12-22 12:10:22,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:10:22,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332648659] [2023-12-22 12:10:22,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:10:22,230 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 [2023-12-22 12:10:22,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:10:22,231 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) [2023-12-22 12:10:22,233 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 (8)] Waiting until timeout for monitored process [2023-12-22 12:10:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:10:22,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 12:10:22,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:10:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 134 proven. 135 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-22 12:10:22,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:10:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-22 12:10:23,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:10:23,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332648659] [2023-12-22 12:10:23,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332648659] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:10:23,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:10:23,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 12:10:23,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42818451] [2023-12-22 12:10:23,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:10:23,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:10:23,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:10:23,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:10:23,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 12:10:23,542 INFO L87 Difference]: Start difference. First operand 1071 states and 1369 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:32,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:10:32,904 INFO L93 Difference]: Finished difference Result 2319 states and 3160 transitions. [2023-12-22 12:10:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:10:32,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 325 [2023-12-22 12:10:32,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:10:32,910 INFO L225 Difference]: With dead ends: 2319 [2023-12-22 12:10:32,910 INFO L226 Difference]: Without dead ends: 1605 [2023-12-22 12:10:32,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 12:10:32,913 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 134 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-12-22 12:10:32,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 55 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-12-22 12:10:32,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2023-12-22 12:10:32,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1605. [2023-12-22 12:10:32,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1604 states have (on average 1.2662094763092269) internal successors, (2031), 1604 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:32,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2031 transitions. [2023-12-22 12:10:32,946 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2031 transitions. Word has length 325 [2023-12-22 12:10:32,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:10:32,947 INFO L495 AbstractCegarLoop]: Abstraction has 1605 states and 2031 transitions. [2023-12-22 12:10:32,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:32,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2031 transitions. [2023-12-22 12:10:32,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-12-22 12:10:32,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:10:32,952 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 12:10:32,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-22 12:10:33,159 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 [2023-12-22 12:10:33,159 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:10:33,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:10:33,160 INFO L85 PathProgramCache]: Analyzing trace with hash 878623109, now seen corresponding path program 1 times [2023-12-22 12:10:33,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:10:33,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948786046] [2023-12-22 12:10:33,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:10:33,161 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 [2023-12-22 12:10:33,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:10:33,163 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) [2023-12-22 12:10:33,174 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 [2023-12-22 12:10:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:10:33,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:10:33,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:10:33,729 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-12-22 12:10:33,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:10:33,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:10:33,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948786046] [2023-12-22 12:10:33,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948786046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:10:33,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:10:33,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 12:10:33,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509015527] [2023-12-22 12:10:33,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:10:33,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:10:33,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:10:33,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:10:33,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:10:33,732 INFO L87 Difference]: Start difference. First operand 1605 states and 2031 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:10:38,673 INFO L93 Difference]: Finished difference Result 3387 states and 4449 transitions. [2023-12-22 12:10:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:10:38,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 331 [2023-12-22 12:10:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:10:38,678 INFO L225 Difference]: With dead ends: 3387 [2023-12-22 12:10:38,679 INFO L226 Difference]: Without dead ends: 2139 [2023-12-22 12:10:38,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:10:38,680 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 74 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-22 12:10:38,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 115 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-22 12:10:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2023-12-22 12:10:38,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2139. [2023-12-22 12:10:38,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 2138 states have (on average 1.2474275023386343) internal successors, (2667), 2138 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:38,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2667 transitions. [2023-12-22 12:10:38,706 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2667 transitions. Word has length 331 [2023-12-22 12:10:38,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:10:38,706 INFO L495 AbstractCegarLoop]: Abstraction has 2139 states and 2667 transitions. [2023-12-22 12:10:38,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:10:38,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2667 transitions. [2023-12-22 12:10:38,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-12-22 12:10:38,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:10:38,708 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:10:38,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-22 12:10:38,913 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 [2023-12-22 12:10:38,913 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:10:38,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:10:38,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2145204604, now seen corresponding path program 1 times [2023-12-22 12:10:38,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:10:38,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137915899] [2023-12-22 12:10:38,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:10:38,915 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 [2023-12-22 12:10:38,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:10:38,916 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) [2023-12-22 12:10:38,941 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 [2023-12-22 12:10:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:10:39,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 12:10:39,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:10:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-22 12:10:40,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:10:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 248 proven. 77 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-22 12:10:50,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:10:50,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137915899] [2023-12-22 12:10:50,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137915899] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:10:50,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:10:50,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-22 12:10:50,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149549104] [2023-12-22 12:10:50,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:10:50,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 12:10:50,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:10:50,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 12:10:50,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-22 12:10:50,083 INFO L87 Difference]: Start difference. First operand 2139 states and 2667 transitions. Second operand has 9 states, 9 states have (on average 53.666666666666664) internal successors, (483), 8 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:11:37,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:11:58,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:12:04,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:12:05,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:12:05,110 INFO L93 Difference]: Finished difference Result 7419 states and 9727 transitions. [2023-12-22 12:12:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-22 12:12:05,111 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 53.666666666666664) internal successors, (483), 8 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 353 [2023-12-22 12:12:05,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:12:05,125 INFO L225 Difference]: With dead ends: 7419 [2023-12-22 12:12:05,125 INFO L226 Difference]: Without dead ends: 5637 [2023-12-22 12:12:05,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-12-22 12:12:05,129 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2818 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 3348 mSolverCounterSat, 898 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2818 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 4246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 3348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.7s IncrementalHoareTripleChecker+Time [2023-12-22 12:12:05,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2818 Valid, 62 Invalid, 4246 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [898 Valid, 3348 Invalid, 0 Unknown, 0 Unchecked, 73.7s Time] [2023-12-22 12:12:05,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5637 states. [2023-12-22 12:12:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5637 to 4809. [2023-12-22 12:12:05,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 1.2899334442595674) internal successors, (6202), 4808 states have internal predecessors, (6202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:12:05,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 6202 transitions. [2023-12-22 12:12:05,198 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 6202 transitions. Word has length 353 [2023-12-22 12:12:05,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:12:05,199 INFO L495 AbstractCegarLoop]: Abstraction has 4809 states and 6202 transitions. [2023-12-22 12:12:05,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.666666666666664) internal successors, (483), 8 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:12:05,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 6202 transitions. [2023-12-22 12:12:05,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-12-22 12:12:05,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:12:05,261 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2023-12-22 12:12:05,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-22 12:12:05,462 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 [2023-12-22 12:12:05,463 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:12:05,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:12:05,467 INFO L85 PathProgramCache]: Analyzing trace with hash -838349125, now seen corresponding path program 1 times [2023-12-22 12:12:05,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:12:05,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710357717] [2023-12-22 12:12:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:12:05,470 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 [2023-12-22 12:12:05,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:12:05,471 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) [2023-12-22 12:12:05,473 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 [2023-12-22 12:12:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:12:05,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 12:12:05,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:12:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 1057 proven. 277 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-22 12:12:07,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:12:18,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 1305 proven. 29 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-22 12:12:18,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:12:18,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710357717] [2023-12-22 12:12:18,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710357717] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:12:18,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:12:18,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-22 12:12:18,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189056677] [2023-12-22 12:12:18,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:12:18,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 12:12:18,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:12:18,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 12:12:18,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-22 12:12:18,626 INFO L87 Difference]: Start difference. First operand 4809 states and 6202 transitions. Second operand has 9 states, 9 states have (on average 89.33333333333333) internal successors, (804), 9 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:12:55,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:12:58,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:13:05,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:13:13,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:13:19,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:13:25,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:13:25,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:13:25,636 INFO L93 Difference]: Finished difference Result 10594 states and 13840 transitions. [2023-12-22 12:13:25,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 12:13:25,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 89.33333333333333) internal successors, (804), 9 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 680 [2023-12-22 12:13:25,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:13:25,657 INFO L225 Difference]: With dead ends: 10594 [2023-12-22 12:13:25,657 INFO L226 Difference]: Without dead ends: 6411 [2023-12-22 12:13:25,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1360 GetRequests, 1352 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-22 12:13:25,662 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 801 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 457 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 3215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.5s IncrementalHoareTripleChecker+Time [2023-12-22 12:13:25,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 57 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 2757 Invalid, 1 Unknown, 0 Unchecked, 66.5s Time] [2023-12-22 12:13:25,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2023-12-22 12:13:25,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 6055. [2023-12-22 12:13:25,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6055 states, 6054 states have (on average 1.126362735381566) internal successors, (6819), 6054 states have internal predecessors, (6819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:13:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 6819 transitions. [2023-12-22 12:13:25,763 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 6819 transitions. Word has length 680 [2023-12-22 12:13:25,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:13:25,763 INFO L495 AbstractCegarLoop]: Abstraction has 6055 states and 6819 transitions. [2023-12-22 12:13:25,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 89.33333333333333) internal successors, (804), 9 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:13:25,764 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 6819 transitions. [2023-12-22 12:13:25,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2023-12-22 12:13:25,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:13:25,771 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 12:13:25,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-22 12:13:25,982 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 [2023-12-22 12:13:25,982 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:13:25,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:13:25,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1658189748, now seen corresponding path program 1 times [2023-12-22 12:13:25,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:13:25,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497514813] [2023-12-22 12:13:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:13:25,986 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 [2023-12-22 12:13:25,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:13:25,989 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) [2023-12-22 12:13:25,990 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 [2023-12-22 12:13:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:13:26,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 12:13:26,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:13:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1702 backedges. 672 proven. 872 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-12-22 12:13:28,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:13:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1702 backedges. 1198 proven. 242 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-12-22 12:13:35,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:13:35,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497514813] [2023-12-22 12:13:35,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497514813] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:13:35,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:13:35,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2023-12-22 12:13:35,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230483647] [2023-12-22 12:13:35,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:13:35,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 12:13:35,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:13:35,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 12:13:35,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-22 12:13:35,362 INFO L87 Difference]: Start difference. First operand 6055 states and 6819 transitions. Second operand has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:13:42,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:13:42,882 INFO L93 Difference]: Finished difference Result 11219 states and 12780 transitions. [2023-12-22 12:13:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 12:13:42,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 723 [2023-12-22 12:13:42,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:13:42,900 INFO L225 Difference]: With dead ends: 11219 [2023-12-22 12:13:42,901 INFO L226 Difference]: Without dead ends: 5699 [2023-12-22 12:13:42,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1446 GetRequests, 1439 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-22 12:13:42,914 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 382 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-12-22 12:13:42,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 86 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-12-22 12:13:42,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2023-12-22 12:13:43,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 4275. [2023-12-22 12:13:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4275 states, 4274 states have (on average 1.1123069723912027) internal successors, (4754), 4274 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:13:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4275 states to 4275 states and 4754 transitions. [2023-12-22 12:13:43,016 INFO L78 Accepts]: Start accepts. Automaton has 4275 states and 4754 transitions. Word has length 723 [2023-12-22 12:13:43,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:13:43,017 INFO L495 AbstractCegarLoop]: Abstraction has 4275 states and 4754 transitions. [2023-12-22 12:13:43,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:13:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 4275 states and 4754 transitions. [2023-12-22 12:13:43,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2023-12-22 12:13:43,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:13:43,025 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 12:13:43,038 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 (12)] Ended with exit code 0 [2023-12-22 12:13:43,233 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 [2023-12-22 12:13:43,233 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:13:43,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:13:43,234 INFO L85 PathProgramCache]: Analyzing trace with hash -151721677, now seen corresponding path program 1 times [2023-12-22 12:13:43,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:13:43,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622905521] [2023-12-22 12:13:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:13:43,237 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 [2023-12-22 12:13:43,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:13:43,238 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) [2023-12-22 12:13:43,241 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 [2023-12-22 12:13:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:13:43,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:13:43,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:13:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 1379 proven. 0 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2023-12-22 12:13:43,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:13:43,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:13:43,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622905521] [2023-12-22 12:13:43,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622905521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:13:43,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:13:43,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 12:13:43,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814131548] [2023-12-22 12:13:43,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:13:43,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:13:43,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:13:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:13:43,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:13:43,669 INFO L87 Difference]: Start difference. First operand 4275 states and 4754 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:13:46,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:13:46,578 INFO L93 Difference]: Finished difference Result 8727 states and 9842 transitions. [2023-12-22 12:13:46,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:13:46,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 795 [2023-12-22 12:13:46,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:13:46,604 INFO L225 Difference]: With dead ends: 8727 [2023-12-22 12:13:46,604 INFO L226 Difference]: Without dead ends: 5343 [2023-12-22 12:13:46,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 793 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:13:46,609 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 107 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-22 12:13:46,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 229 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-22 12:13:46,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5343 states. [2023-12-22 12:13:46,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5343 to 5165. [2023-12-22 12:13:46,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 1.0863671572424478) internal successors, (5610), 5164 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:13:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 5610 transitions. [2023-12-22 12:13:46,699 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 5610 transitions. Word has length 795 [2023-12-22 12:13:46,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:13:46,700 INFO L495 AbstractCegarLoop]: Abstraction has 5165 states and 5610 transitions. [2023-12-22 12:13:46,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:13:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 5610 transitions. [2023-12-22 12:13:46,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2023-12-22 12:13:46,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:13:46,708 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 12:13:46,729 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 [2023-12-22 12:13:46,915 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 [2023-12-22 12:13:46,915 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:13:46,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:13:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1728006351, now seen corresponding path program 1 times [2023-12-22 12:13:46,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:13:46,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847224393] [2023-12-22 12:13:46,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:13:46,918 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 [2023-12-22 12:13:46,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:13:46,919 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) [2023-12-22 12:13:46,941 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 [2023-12-22 12:13:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:13:47,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 12:13:47,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:13:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2377 backedges. 1465 proven. 420 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2023-12-22 12:13:53,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:14:12,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2377 backedges. 1885 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2023-12-22 12:14:12,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:14:12,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847224393] [2023-12-22 12:14:12,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847224393] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:14:12,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:14:12,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 19 [2023-12-22 12:14:12,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171044743] [2023-12-22 12:14:12,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:14:12,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-22 12:14:12,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:14:12,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-22 12:14:12,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2023-12-22 12:14:12,327 INFO L87 Difference]: Start difference. First operand 5165 states and 5610 transitions. Second operand has 11 states, 11 states have (on average 51.36363636363637) internal successors, (565), 10 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:14:16,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:14:17,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:14:17,128 INFO L93 Difference]: Finished difference Result 10123 states and 11015 transitions. [2023-12-22 12:14:17,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-22 12:14:17,130 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 51.36363636363637) internal successors, (565), 10 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 890 [2023-12-22 12:14:17,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:14:17,137 INFO L225 Difference]: With dead ends: 10123 [2023-12-22 12:14:17,137 INFO L226 Difference]: Without dead ends: 5475 [2023-12-22 12:14:17,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1778 GetRequests, 1760 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2023-12-22 12:14:17,148 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 149 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-22 12:14:17,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 68 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-22 12:14:17,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5475 states. [2023-12-22 12:14:17,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5475 to 5475. [2023-12-22 12:14:17,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5475 states, 5474 states have (on average 1.081841432225064) internal successors, (5922), 5474 states have internal predecessors, (5922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:14:17,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 5922 transitions. [2023-12-22 12:14:17,214 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 5922 transitions. Word has length 890 [2023-12-22 12:14:17,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:14:17,214 INFO L495 AbstractCegarLoop]: Abstraction has 5475 states and 5922 transitions. [2023-12-22 12:14:17,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 51.36363636363637) internal successors, (565), 10 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:14:17,215 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 5922 transitions. [2023-12-22 12:14:17,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2023-12-22 12:14:17,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:14:17,224 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2023-12-22 12:14:17,231 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 [2023-12-22 12:14:17,431 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 [2023-12-22 12:14:17,432 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:14:17,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:14:17,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1299665905, now seen corresponding path program 1 times [2023-12-22 12:14:17,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:14:17,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611704138] [2023-12-22 12:14:17,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:14:17,436 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 [2023-12-22 12:14:17,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:14:17,444 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) [2023-12-22 12:14:17,448 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 [2023-12-22 12:14:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:14:17,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 12:14:17,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:14:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2423 backedges. 1263 proven. 0 refuted. 0 times theorem prover too weak. 1160 trivial. 0 not checked. [2023-12-22 12:14:19,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:14:19,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:14:19,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611704138] [2023-12-22 12:14:19,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611704138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:14:19,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:14:19,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 12:14:19,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503966609] [2023-12-22 12:14:19,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:14:19,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 12:14:19,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:14:19,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 12:14:19,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:14:19,270 INFO L87 Difference]: Start difference. First operand 5475 states and 5922 transitions. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:14:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:14:21,932 INFO L93 Difference]: Finished difference Result 10082 states and 10975 transitions. [2023-12-22 12:14:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 12:14:21,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 892 [2023-12-22 12:14:21,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:14:21,951 INFO L225 Difference]: With dead ends: 10082 [2023-12-22 12:14:21,951 INFO L226 Difference]: Without dead ends: 5653 [2023-12-22 12:14:21,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 889 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:14:21,957 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 64 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-22 12:14:21,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 54 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-22 12:14:21,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5653 states. [2023-12-22 12:14:22,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5653 to 5653. [2023-12-22 12:14:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5653 states, 5652 states have (on average 1.079794762915782) internal successors, (6103), 5652 states have internal predecessors, (6103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:14:22,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5653 states to 5653 states and 6103 transitions. [2023-12-22 12:14:22,025 INFO L78 Accepts]: Start accepts. Automaton has 5653 states and 6103 transitions. Word has length 892 [2023-12-22 12:14:22,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:14:22,025 INFO L495 AbstractCegarLoop]: Abstraction has 5653 states and 6103 transitions. [2023-12-22 12:14:22,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:14:22,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5653 states and 6103 transitions. [2023-12-22 12:14:22,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2023-12-22 12:14:22,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:14:22,036 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 12:14:22,048 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 (15)] Ended with exit code 0 [2023-12-22 12:14:22,246 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 [2023-12-22 12:14:22,247 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:14:22,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:14:22,247 INFO L85 PathProgramCache]: Analyzing trace with hash -323314190, now seen corresponding path program 1 times [2023-12-22 12:14:22,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:14:22,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507335446] [2023-12-22 12:14:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:14:22,250 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 [2023-12-22 12:14:22,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:14:22,254 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) [2023-12-22 12:14:22,279 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 [2023-12-22 12:14:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:14:22,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 12:14:22,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:14:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2955 backedges. 359 proven. 2225 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2023-12-22 12:14:23,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:14:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2955 backedges. 1911 proven. 100 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2023-12-22 12:14:27,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:14:27,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507335446] [2023-12-22 12:14:27,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507335446] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:14:27,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:14:27,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2023-12-22 12:14:27,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566940558] [2023-12-22 12:14:27,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:14:27,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 12:14:27,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:14:27,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 12:14:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-22 12:14:27,636 INFO L87 Difference]: Start difference. First operand 5653 states and 6103 transitions. Second operand has 10 states, 10 states have (on average 120.1) internal successors, (1201), 10 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:14:44,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:14:44,694 INFO L93 Difference]: Finished difference Result 11839 states and 12805 transitions. [2023-12-22 12:14:44,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 12:14:44,700 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 120.1) internal successors, (1201), 10 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 967 [2023-12-22 12:14:44,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:14:44,710 INFO L225 Difference]: With dead ends: 11839 [2023-12-22 12:14:44,710 INFO L226 Difference]: Without dead ends: 7232 [2023-12-22 12:14:44,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1934 GetRequests, 1925 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-22 12:14:44,715 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 477 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4221 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 4394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 4221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2023-12-22 12:14:44,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 72 Invalid, 4394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 4221 Invalid, 0 Unknown, 0 Unchecked, 16.9s Time] [2023-12-22 12:14:44,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7232 states. [2023-12-22 12:14:44,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7232 to 6976. [2023-12-22 12:14:44,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6976 states, 6975 states have (on average 1.0520430107526881) internal successors, (7338), 6975 states have internal predecessors, (7338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:14:44,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6976 states to 6976 states and 7338 transitions. [2023-12-22 12:14:44,785 INFO L78 Accepts]: Start accepts. Automaton has 6976 states and 7338 transitions. Word has length 967 [2023-12-22 12:14:44,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:14:44,786 INFO L495 AbstractCegarLoop]: Abstraction has 6976 states and 7338 transitions. [2023-12-22 12:14:44,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.1) internal successors, (1201), 10 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:14:44,787 INFO L276 IsEmpty]: Start isEmpty. Operand 6976 states and 7338 transitions. [2023-12-22 12:14:44,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2023-12-22 12:14:44,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:14:44,795 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2023-12-22 12:14:44,804 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 [2023-12-22 12:14:45,002 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 [2023-12-22 12:14:45,002 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:14:45,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:14:45,003 INFO L85 PathProgramCache]: Analyzing trace with hash -459851436, now seen corresponding path program 1 times [2023-12-22 12:14:45,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:14:45,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680760548] [2023-12-22 12:14:45,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:14:45,008 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 [2023-12-22 12:14:45,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:14:45,010 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) [2023-12-22 12:14:45,012 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 [2023-12-22 12:14:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:14:45,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 12:14:45,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:14:52,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3001 backedges. 1356 proven. 1115 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2023-12-22 12:14:52,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:15:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3001 backedges. 2471 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2023-12-22 12:15:45,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:15:45,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680760548] [2023-12-22 12:15:45,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680760548] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:15:45,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:15:45,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 19 [2023-12-22 12:15:45,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912200802] [2023-12-22 12:15:45,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:15:45,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-22 12:15:45,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:15:45,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-22 12:15:45,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=240, Unknown=0, NotChecked=0, Total=380 [2023-12-22 12:15:45,932 INFO L87 Difference]: Start difference. First operand 6976 states and 7338 transitions. Second operand has 11 states, 11 states have (on average 52.09090909090909) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:15:59,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:16:10,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:16:10,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:16:10,965 INFO L93 Difference]: Finished difference Result 13190 states and 13899 transitions. [2023-12-22 12:16:10,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-22 12:16:10,966 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 52.09090909090909) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 976 [2023-12-22 12:16:10,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:16:10,975 INFO L225 Difference]: With dead ends: 13190 [2023-12-22 12:16:10,976 INFO L226 Difference]: Without dead ends: 7120 [2023-12-22 12:16:10,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1950 GetRequests, 1932 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=240, Unknown=0, NotChecked=0, Total=380 [2023-12-22 12:16:10,981 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 80 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2023-12-22 12:16:10,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 66 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1764 Invalid, 1 Unknown, 0 Unchecked, 24.9s Time] [2023-12-22 12:16:10,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7120 states. [2023-12-22 12:16:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7120 to 6764. [2023-12-22 12:16:11,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6764 states, 6763 states have (on average 1.0520479077332545) internal successors, (7115), 6763 states have internal predecessors, (7115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:16:11,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6764 states to 6764 states and 7115 transitions. [2023-12-22 12:16:11,055 INFO L78 Accepts]: Start accepts. Automaton has 6764 states and 7115 transitions. Word has length 976 [2023-12-22 12:16:11,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:16:11,055 INFO L495 AbstractCegarLoop]: Abstraction has 6764 states and 7115 transitions. [2023-12-22 12:16:11,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 52.09090909090909) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:16:11,056 INFO L276 IsEmpty]: Start isEmpty. Operand 6764 states and 7115 transitions. [2023-12-22 12:16:11,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1051 [2023-12-22 12:16:11,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:16:11,065 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 12:16:11,075 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 (17)] Ended with exit code 0 [2023-12-22 12:16:11,272 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 [2023-12-22 12:16:11,273 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:16:11,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:16:11,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1111492423, now seen corresponding path program 1 times [2023-12-22 12:16:11,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:16:11,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439038680] [2023-12-22 12:16:11,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:16:11,276 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 [2023-12-22 12:16:11,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:16:11,277 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) [2023-12-22 12:16:11,300 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 [2023-12-22 12:16:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:16:11,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:16:11,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:16:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3302 backedges. 128 proven. 2957 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-22 12:16:14,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:16:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3302 backedges. 841 proven. 0 refuted. 0 times theorem prover too weak. 2461 trivial. 0 not checked. [2023-12-22 12:16:24,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:16:24,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439038680] [2023-12-22 12:16:24,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439038680] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:16:24,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:16:24,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-12-22 12:16:24,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728182181] [2023-12-22 12:16:24,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:16:24,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 12:16:24,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:16:24,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 12:16:24,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:16:24,608 INFO L87 Difference]: Start difference. First operand 6764 states and 7115 transitions. Second operand has 5 states, 5 states have (on average 58.2) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:16:33,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:16:45,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:16:49,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:16:49,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:16:49,733 INFO L93 Difference]: Finished difference Result 11472 states and 12163 transitions. [2023-12-22 12:16:49,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 12:16:49,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 58.2) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1050 [2023-12-22 12:16:49,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:16:49,740 INFO L225 Difference]: With dead ends: 11472 [2023-12-22 12:16:49,740 INFO L226 Difference]: Without dead ends: 6942 [2023-12-22 12:16:49,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2098 GetRequests, 2088 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:16:49,744 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 184 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2023-12-22 12:16:49,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 14 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 25.1s Time] [2023-12-22 12:16:49,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6942 states. [2023-12-22 12:16:49,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6942 to 6764. [2023-12-22 12:16:49,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6764 states, 6763 states have (on average 1.0514564542362856) internal successors, (7111), 6763 states have internal predecessors, (7111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:16:49,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6764 states to 6764 states and 7111 transitions. [2023-12-22 12:16:49,804 INFO L78 Accepts]: Start accepts. Automaton has 6764 states and 7111 transitions. Word has length 1050 [2023-12-22 12:16:49,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:16:49,805 INFO L495 AbstractCegarLoop]: Abstraction has 6764 states and 7111 transitions. [2023-12-22 12:16:49,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.2) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:16:49,805 INFO L276 IsEmpty]: Start isEmpty. Operand 6764 states and 7111 transitions. [2023-12-22 12:16:49,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2023-12-22 12:16:49,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:16:49,827 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 12:16:49,837 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 [2023-12-22 12:16:50,035 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 [2023-12-22 12:16:50,035 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:16:50,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:16:50,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1482213669, now seen corresponding path program 1 times [2023-12-22 12:16:50,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:16:50,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107889604] [2023-12-22 12:16:50,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:16:50,039 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 [2023-12-22 12:16:50,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:16:50,040 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) [2023-12-22 12:16:50,042 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 [2023-12-22 12:16:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:16:50,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:16:50,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:16:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3386 backedges. 0 proven. 3169 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-22 12:16:54,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:17:01,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3386 backedges. 797 proven. 128 refuted. 0 times theorem prover too weak. 2461 trivial. 0 not checked. [2023-12-22 12:17:01,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:17:01,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107889604] [2023-12-22 12:17:01,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107889604] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:17:01,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:17:01,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2023-12-22 12:17:01,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218476643] [2023-12-22 12:17:01,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:17:01,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-22 12:17:01,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:17:01,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-22 12:17:01,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-12-22 12:17:01,336 INFO L87 Difference]: Start difference. First operand 6764 states and 7111 transitions. Second operand has 13 states, 13 states have (on average 87.15384615384616) internal successors, (1133), 12 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:17:23,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:17:26,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:17:31,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:17:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:17:37,804 INFO L93 Difference]: Finished difference Result 12747 states and 13527 transitions. [2023-12-22 12:17:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-22 12:17:37,811 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 87.15384615384616) internal successors, (1133), 12 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1062 [2023-12-22 12:17:37,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:17:37,822 INFO L225 Difference]: With dead ends: 12747 [2023-12-22 12:17:37,822 INFO L226 Difference]: Without dead ends: 7832 [2023-12-22 12:17:37,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2131 GetRequests, 2111 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-12-22 12:17:37,828 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 1611 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 10915 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 11169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 10915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time [2023-12-22 12:17:37,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 208 Invalid, 11169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 10915 Invalid, 0 Unknown, 0 Unchecked, 35.8s Time] [2023-12-22 12:17:37,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7832 states. [2023-12-22 12:17:37,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7832 to 6942. [2023-12-22 12:17:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6942 states, 6941 states have (on average 1.0468232243192623) internal successors, (7266), 6941 states have internal predecessors, (7266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:17:37,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6942 states to 6942 states and 7266 transitions. [2023-12-22 12:17:37,920 INFO L78 Accepts]: Start accepts. Automaton has 6942 states and 7266 transitions. Word has length 1062 [2023-12-22 12:17:37,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:17:37,920 INFO L495 AbstractCegarLoop]: Abstraction has 6942 states and 7266 transitions. [2023-12-22 12:17:37,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 87.15384615384616) internal successors, (1133), 12 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:17:37,921 INFO L276 IsEmpty]: Start isEmpty. Operand 6942 states and 7266 transitions. [2023-12-22 12:17:37,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1143 [2023-12-22 12:17:37,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:17:37,934 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 12:17:37,945 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 [2023-12-22 12:17:38,145 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 [2023-12-22 12:17:38,145 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:17:38,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:17:38,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1668358088, now seen corresponding path program 1 times [2023-12-22 12:17:38,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:17:38,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710024215] [2023-12-22 12:17:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:17:38,150 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 [2023-12-22 12:17:38,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:17:38,152 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) [2023-12-22 12:17:38,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-22 12:17:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:17:38,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-22 12:17:38,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:17:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 568 proven. 3021 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2023-12-22 12:17:49,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:18:33,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2652 proven. 364 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2023-12-22 12:18:33,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:18:33,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710024215] [2023-12-22 12:18:33,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710024215] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:18:33,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:18:33,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2023-12-22 12:18:33,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294513521] [2023-12-22 12:18:33,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:18:33,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-22 12:18:33,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:18:33,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-22 12:18:33,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2023-12-22 12:18:33,827 INFO L87 Difference]: Start difference. First operand 6942 states and 7266 transitions. Second operand has 25 states, 25 states have (on average 61.04) internal successors, (1526), 24 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:18:50,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:19:02,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:19:07,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:19:08,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:19:16,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:19:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:19:21,888 INFO L93 Difference]: Finished difference Result 11965 states and 12606 transitions. [2023-12-22 12:19:21,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-22 12:19:21,896 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 61.04) internal successors, (1526), 24 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1142 [2023-12-22 12:19:21,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:19:21,905 INFO L225 Difference]: With dead ends: 11965 [2023-12-22 12:19:21,906 INFO L226 Difference]: Without dead ends: 6603 [2023-12-22 12:19:21,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2290 GetRequests, 2259 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=327, Invalid=729, Unknown=0, NotChecked=0, Total=1056 [2023-12-22 12:19:21,913 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 374 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 9436 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 9573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 9436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.8s IncrementalHoareTripleChecker+Time [2023-12-22 12:19:21,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 157 Invalid, 9573 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [137 Valid, 9436 Invalid, 0 Unknown, 0 Unchecked, 46.8s Time] [2023-12-22 12:19:21,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2023-12-22 12:19:21,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 5933. [2023-12-22 12:19:21,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5933 states, 5932 states have (on average 1.0470330411328388) internal successors, (6211), 5932 states have internal predecessors, (6211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:19:21,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5933 states to 5933 states and 6211 transitions. [2023-12-22 12:19:21,987 INFO L78 Accepts]: Start accepts. Automaton has 5933 states and 6211 transitions. Word has length 1142 [2023-12-22 12:19:21,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:19:21,988 INFO L495 AbstractCegarLoop]: Abstraction has 5933 states and 6211 transitions. [2023-12-22 12:19:21,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 61.04) internal successors, (1526), 24 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:19:21,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5933 states and 6211 transitions. [2023-12-22 12:19:22,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1221 [2023-12-22 12:19:22,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:19:22,002 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 12:19:22,017 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 [2023-12-22 12:19:22,213 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 [2023-12-22 12:19:22,214 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:19:22,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:19:22,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1944720251, now seen corresponding path program 1 times [2023-12-22 12:19:22,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:19:22,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532321802] [2023-12-22 12:19:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:19:22,218 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 [2023-12-22 12:19:22,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:19:22,220 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) [2023-12-22 12:19:22,221 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 (21)] Waiting until timeout for monitored process [2023-12-22 12:19:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:19:22,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:19:22,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:19:22,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 1274 proven. 0 refuted. 0 times theorem prover too weak. 3300 trivial. 0 not checked. [2023-12-22 12:19:22,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:19:22,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:19:22,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532321802] [2023-12-22 12:19:22,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532321802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:19:22,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:19:22,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 12:19:22,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746385704] [2023-12-22 12:19:22,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:19:22,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:19:22,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:19:22,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:19:22,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:19:22,975 INFO L87 Difference]: Start difference. First operand 5933 states and 6211 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:19:26,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:19:26,130 INFO L93 Difference]: Finished difference Result 12399 states and 13081 transitions. [2023-12-22 12:19:26,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:19:26,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1220 [2023-12-22 12:19:26,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:19:26,138 INFO L225 Difference]: With dead ends: 12399 [2023-12-22 12:19:26,138 INFO L226 Difference]: Without dead ends: 6645 [2023-12-22 12:19:26,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1219 GetRequests, 1218 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:19:26,145 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 69 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-22 12:19:26,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 219 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-22 12:19:26,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6645 states. [2023-12-22 12:19:26,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6645 to 6111. [2023-12-22 12:19:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6111 states, 6110 states have (on average 1.0456628477905074) internal successors, (6389), 6110 states have internal predecessors, (6389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:19:26,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6111 states to 6111 states and 6389 transitions. [2023-12-22 12:19:26,266 INFO L78 Accepts]: Start accepts. Automaton has 6111 states and 6389 transitions. Word has length 1220 [2023-12-22 12:19:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:19:26,267 INFO L495 AbstractCegarLoop]: Abstraction has 6111 states and 6389 transitions. [2023-12-22 12:19:26,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:19:26,268 INFO L276 IsEmpty]: Start isEmpty. Operand 6111 states and 6389 transitions. [2023-12-22 12:19:26,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1395 [2023-12-22 12:19:26,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:19:26,293 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:19:26,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-22 12:19:26,506 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 [2023-12-22 12:19:26,507 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:19:26,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:19:26,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1720262662, now seen corresponding path program 1 times [2023-12-22 12:19:26,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:19:26,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435797710] [2023-12-22 12:19:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:19:26,512 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 [2023-12-22 12:19:26,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:19:26,514 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) [2023-12-22 12:19:26,517 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 [2023-12-22 12:19:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:19:26,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:19:26,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:19:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6010 backedges. 0 proven. 5426 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2023-12-22 12:19:35,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:19:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6010 backedges. 2126 proven. 279 refuted. 0 times theorem prover too weak. 3605 trivial. 0 not checked. [2023-12-22 12:19:41,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:19:41,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435797710] [2023-12-22 12:19:41,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435797710] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:19:41,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:19:41,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2023-12-22 12:19:41,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479308923] [2023-12-22 12:19:41,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:19:41,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-22 12:19:41,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:19:41,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-22 12:19:41,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-12-22 12:19:41,171 INFO L87 Difference]: Start difference. First operand 6111 states and 6389 transitions. Second operand has 13 states, 13 states have (on average 98.38461538461539) internal successors, (1279), 12 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:20:06,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:20:06,600 INFO L93 Difference]: Finished difference Result 14291 states and 15234 transitions. [2023-12-22 12:20:06,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-22 12:20:06,601 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 98.38461538461539) internal successors, (1279), 12 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1394 [2023-12-22 12:20:06,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:20:06,610 INFO L225 Difference]: With dead ends: 14291 [2023-12-22 12:20:06,610 INFO L226 Difference]: Without dead ends: 10010 [2023-12-22 12:20:06,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2798 GetRequests, 2775 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2023-12-22 12:20:06,613 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1505 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 10461 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 10804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 10461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2023-12-22 12:20:06,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 214 Invalid, 10804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 10461 Invalid, 0 Unknown, 0 Unchecked, 24.9s Time] [2023-12-22 12:20:06,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10010 states. [2023-12-22 12:20:06,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10010 to 7137. [2023-12-22 12:20:06,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7137 states, 7136 states have (on average 1.0430213004484306) internal successors, (7443), 7136 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:20:06,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7137 states to 7137 states and 7443 transitions. [2023-12-22 12:20:06,691 INFO L78 Accepts]: Start accepts. Automaton has 7137 states and 7443 transitions. Word has length 1394 [2023-12-22 12:20:06,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:20:06,692 INFO L495 AbstractCegarLoop]: Abstraction has 7137 states and 7443 transitions. [2023-12-22 12:20:06,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 98.38461538461539) internal successors, (1279), 12 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:20:06,692 INFO L276 IsEmpty]: Start isEmpty. Operand 7137 states and 7443 transitions. [2023-12-22 12:20:06,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1550 [2023-12-22 12:20:06,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:20:06,709 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:20:06,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-22 12:20:06,912 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 [2023-12-22 12:20:06,913 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:20:06,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:20:06,913 INFO L85 PathProgramCache]: Analyzing trace with hash -616496480, now seen corresponding path program 1 times [2023-12-22 12:20:06,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:20:06,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627654969] [2023-12-22 12:20:06,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:20:06,918 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 [2023-12-22 12:20:06,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:20:06,919 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) [2023-12-22 12:20:06,947 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 [2023-12-22 12:20:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:20:07,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 1685 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:20:07,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:20:14,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7386 backedges. 1485 proven. 5292 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2023-12-22 12:20:14,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:20:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 7386 backedges. 3756 proven. 0 refuted. 0 times theorem prover too weak. 3630 trivial. 0 not checked. [2023-12-22 12:20:35,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:20:35,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627654969] [2023-12-22 12:20:35,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627654969] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:20:35,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:20:35,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-12-22 12:20:35,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302641113] [2023-12-22 12:20:35,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:20:35,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 12:20:35,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:20:35,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 12:20:35,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:20:35,257 INFO L87 Difference]: Start difference. First operand 7137 states and 7443 transitions. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:20:40,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:20:49,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:20:57,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:20:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:20:59,819 INFO L93 Difference]: Finished difference Result 11980 states and 12580 transitions. [2023-12-22 12:20:59,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 12:20:59,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 108.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1549 [2023-12-22 12:20:59,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:20:59,825 INFO L225 Difference]: With dead ends: 11980 [2023-12-22 12:20:59,826 INFO L226 Difference]: Without dead ends: 7493 [2023-12-22 12:20:59,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3096 GetRequests, 3086 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:20:59,828 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 77 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2023-12-22 12:20:59,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 17 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 24.5s Time] [2023-12-22 12:20:59,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7493 states. [2023-12-22 12:20:59,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7493 to 7137. [2023-12-22 12:20:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7137 states, 7136 states have (on average 1.0416199551569507) internal successors, (7433), 7136 states have internal predecessors, (7433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:20:59,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7137 states to 7137 states and 7433 transitions. [2023-12-22 12:20:59,895 INFO L78 Accepts]: Start accepts. Automaton has 7137 states and 7433 transitions. Word has length 1549 [2023-12-22 12:20:59,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:20:59,895 INFO L495 AbstractCegarLoop]: Abstraction has 7137 states and 7433 transitions. [2023-12-22 12:20:59,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:20:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 7137 states and 7433 transitions. [2023-12-22 12:20:59,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1612 [2023-12-22 12:20:59,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:20:59,916 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:20:59,926 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 [2023-12-22 12:21:00,126 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 [2023-12-22 12:21:00,127 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:21:00,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:21:00,127 INFO L85 PathProgramCache]: Analyzing trace with hash -784196422, now seen corresponding path program 1 times [2023-12-22 12:21:00,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:21:00,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170832111] [2023-12-22 12:21:00,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:21:00,131 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 [2023-12-22 12:21:00,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:21:00,133 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) [2023-12-22 12:21:00,156 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 [2023-12-22 12:21:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:21:00,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:21:00,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:21:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8201 backedges. 2310 proven. 5195 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2023-12-22 12:21:06,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:21:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 8201 backedges. 4436 proven. 48 refuted. 0 times theorem prover too weak. 3717 trivial. 0 not checked. [2023-12-22 12:21:09,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:21:09,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170832111] [2023-12-22 12:21:09,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170832111] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:21:09,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:21:09,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 11 [2023-12-22 12:21:09,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768140315] [2023-12-22 12:21:09,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:21:09,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-22 12:21:09,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:21:09,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-22 12:21:09,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:21:09,783 INFO L87 Difference]: Start difference. First operand 7137 states and 7433 transitions. Second operand has 12 states, 12 states have (on average 117.25) internal successors, (1407), 11 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:21:25,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:21:25,750 INFO L93 Difference]: Finished difference Result 13045 states and 13712 transitions. [2023-12-22 12:21:25,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 12:21:25,762 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 117.25) internal successors, (1407), 11 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1611 [2023-12-22 12:21:25,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:21:25,769 INFO L225 Difference]: With dead ends: 13045 [2023-12-22 12:21:25,769 INFO L226 Difference]: Without dead ends: 8538 [2023-12-22 12:21:25,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3221 GetRequests, 3210 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-22 12:21:25,773 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 228 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 7558 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 7663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 7558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2023-12-22 12:21:25,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 164 Invalid, 7663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 7558 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time] [2023-12-22 12:21:25,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8538 states. [2023-12-22 12:21:25,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8538 to 7137. [2023-12-22 12:21:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7137 states, 7136 states have (on average 1.0402186098654709) internal successors, (7423), 7136 states have internal predecessors, (7423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:21:25,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7137 states to 7137 states and 7423 transitions. [2023-12-22 12:21:25,844 INFO L78 Accepts]: Start accepts. Automaton has 7137 states and 7423 transitions. Word has length 1611 [2023-12-22 12:21:25,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:21:25,845 INFO L495 AbstractCegarLoop]: Abstraction has 7137 states and 7423 transitions. [2023-12-22 12:21:25,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 117.25) internal successors, (1407), 11 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:21:25,845 INFO L276 IsEmpty]: Start isEmpty. Operand 7137 states and 7423 transitions. [2023-12-22 12:21:25,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1627 [2023-12-22 12:21:25,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:21:25,865 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:21:25,885 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 (24)] Forceful destruction successful, exit code 0 [2023-12-22 12:21:26,074 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 [2023-12-22 12:21:26,074 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:21:26,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:21:26,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1585674867, now seen corresponding path program 1 times [2023-12-22 12:21:26,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:21:26,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52729404] [2023-12-22 12:21:26,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:21:26,078 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 [2023-12-22 12:21:26,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:21:26,081 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) [2023-12-22 12:21:26,104 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 [2023-12-22 12:21:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:21:26,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 12:21:26,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:21:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8341 backedges. 1886 proven. 5816 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-12-22 12:21:29,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:21:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 8341 backedges. 4531 proven. 150 refuted. 0 times theorem prover too weak. 3660 trivial. 0 not checked. [2023-12-22 12:21:30,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:21:30,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52729404] [2023-12-22 12:21:30,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52729404] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:21:30,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:21:30,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 11 [2023-12-22 12:21:30,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885172190] [2023-12-22 12:21:30,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:21:30,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-22 12:21:30,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:21:30,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-22 12:21:30,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-22 12:21:30,405 INFO L87 Difference]: Start difference. First operand 7137 states and 7423 transitions. Second operand has 11 states, 11 states have (on average 137.0909090909091) internal successors, (1508), 11 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:21:47,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:21:47,729 INFO L93 Difference]: Finished difference Result 13887 states and 14673 transitions. [2023-12-22 12:21:47,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-22 12:21:47,730 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 137.0909090909091) internal successors, (1508), 11 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1626 [2023-12-22 12:21:47,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:21:47,738 INFO L225 Difference]: With dead ends: 13887 [2023-12-22 12:21:47,738 INFO L226 Difference]: Without dead ends: 9428 [2023-12-22 12:21:47,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3252 GetRequests, 3242 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:21:47,744 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 442 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 8270 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 8362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 8270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2023-12-22 12:21:47,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 175 Invalid, 8362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 8270 Invalid, 0 Unknown, 0 Unchecked, 17.1s Time] [2023-12-22 12:21:47,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9428 states. [2023-12-22 12:21:47,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9428 to 8205. [2023-12-22 12:21:47,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8205 states, 8204 states have (on average 1.0427840078010726) internal successors, (8555), 8204 states have internal predecessors, (8555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:21:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8205 states to 8205 states and 8555 transitions. [2023-12-22 12:21:47,830 INFO L78 Accepts]: Start accepts. Automaton has 8205 states and 8555 transitions. Word has length 1626 [2023-12-22 12:21:47,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:21:47,831 INFO L495 AbstractCegarLoop]: Abstraction has 8205 states and 8555 transitions. [2023-12-22 12:21:47,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 137.0909090909091) internal successors, (1508), 11 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:21:47,832 INFO L276 IsEmpty]: Start isEmpty. Operand 8205 states and 8555 transitions. [2023-12-22 12:21:47,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1701 [2023-12-22 12:21:47,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:21:47,854 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:21:47,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-22 12:21:48,062 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 [2023-12-22 12:21:48,063 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:21:48,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:21:48,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1361268745, now seen corresponding path program 1 times [2023-12-22 12:21:48,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:21:48,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375112230] [2023-12-22 12:21:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:21:48,068 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 [2023-12-22 12:21:48,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:21:48,069 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) [2023-12-22 12:21:48,071 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 (26)] Waiting until timeout for monitored process [2023-12-22 12:21:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:21:48,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 1844 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:21:48,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:21:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8608 backedges. 2595 proven. 5434 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2023-12-22 12:21:54,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:22:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8608 backedges. 6505 proven. 50 refuted. 0 times theorem prover too weak. 2053 trivial. 0 not checked. [2023-12-22 12:22:37,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:22:37,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375112230] [2023-12-22 12:22:37,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375112230] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:22:37,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:22:37,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2023-12-22 12:22:37,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927115975] [2023-12-22 12:22:37,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:22:37,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-22 12:22:37,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:22:37,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-22 12:22:37,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-12-22 12:22:37,088 INFO L87 Difference]: Start difference. First operand 8205 states and 8555 transitions. Second operand has 13 states, 13 states have (on average 126.6923076923077) internal successors, (1647), 13 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:01,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:23:08,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:23:11,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:23:11,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:23:11,582 INFO L93 Difference]: Finished difference Result 14293 states and 14982 transitions. [2023-12-22 12:23:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 12:23:11,583 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 126.6923076923077) internal successors, (1647), 13 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1700 [2023-12-22 12:23:11,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:23:11,589 INFO L225 Difference]: With dead ends: 14293 [2023-12-22 12:23:11,589 INFO L226 Difference]: Without dead ends: 9250 [2023-12-22 12:23:11,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3402 GetRequests, 3389 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-12-22 12:23:11,592 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 180 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 8469 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 8534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 8469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2023-12-22 12:23:11,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 183 Invalid, 8534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 8469 Invalid, 0 Unknown, 0 Unchecked, 33.7s Time] [2023-12-22 12:23:11,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9250 states. [2023-12-22 12:23:11,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9250 to 8205. [2023-12-22 12:23:11,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8205 states, 8204 states have (on average 1.0414431984397854) internal successors, (8544), 8204 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:11,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8205 states to 8205 states and 8544 transitions. [2023-12-22 12:23:11,674 INFO L78 Accepts]: Start accepts. Automaton has 8205 states and 8544 transitions. Word has length 1700 [2023-12-22 12:23:11,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:23:11,674 INFO L495 AbstractCegarLoop]: Abstraction has 8205 states and 8544 transitions. [2023-12-22 12:23:11,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 126.6923076923077) internal successors, (1647), 13 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:11,675 INFO L276 IsEmpty]: Start isEmpty. Operand 8205 states and 8544 transitions. [2023-12-22 12:23:11,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2023-12-22 12:23:11,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:23:11,695 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:23:11,707 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 [2023-12-22 12:23:11,907 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 [2023-12-22 12:23:11,907 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:23:11,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:23:11,908 INFO L85 PathProgramCache]: Analyzing trace with hash -950578859, now seen corresponding path program 1 times [2023-12-22 12:23:11,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:23:11,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318430276] [2023-12-22 12:23:11,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:23:11,912 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 [2023-12-22 12:23:11,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:23:11,913 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) [2023-12-22 12:23:11,914 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 [2023-12-22 12:23:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:23:12,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 1850 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:23:12,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:23:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8831 backedges. 2853 proven. 5396 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2023-12-22 12:23:16,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:24:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8831 backedges. 6775 proven. 0 refuted. 0 times theorem prover too weak. 2056 trivial. 0 not checked. [2023-12-22 12:24:05,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:24:05,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318430276] [2023-12-22 12:24:05,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318430276] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:24:05,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:24:05,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-22 12:24:05,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511366155] [2023-12-22 12:24:05,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:24:05,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 12:24:05,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:24:05,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 12:24:05,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-22 12:24:05,780 INFO L87 Difference]: Start difference. First operand 8205 states and 8544 transitions. Second operand has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:24:17,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.69s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-22 12:24:24,481 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 12:24:24,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 12:24:24,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3408 GetRequests, 3397 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-22 12:24:24,499 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2023-12-22 12:24:24,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 9 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 18.6s Time] [2023-12-22 12:24:24,500 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 12:24:24,513 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 [2023-12-22 12:24:24,514 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 12:24:24,701 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 [2023-12-22 12:24:24,702 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (8205states) and FLOYD_HOARE automaton (currently 4 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (1366 states constructed, input type IntersectNwa). [2023-12-22 12:24:24,706 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-22 12:24:24,708 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 12:24:24,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:24:24 BoogieIcfgContainer [2023-12-22 12:24:24,710 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 12:24:24,711 INFO L158 Benchmark]: Toolchain (without parser) took 868081.71ms. Allocated memory was 211.8MB in the beginning and 589.3MB in the end (delta: 377.5MB). Free memory was 146.4MB in the beginning and 474.3MB in the end (delta: -327.9MB). Peak memory consumption was 373.8MB. Max. memory is 8.0GB. [2023-12-22 12:24:24,711 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 211.8MB. Free memory is still 162.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 12:24:24,711 INFO L158 Benchmark]: CACSL2BoogieTranslator took 543.25ms. Allocated memory was 211.8MB in the beginning and 274.7MB in the end (delta: 62.9MB). Free memory was 146.0MB in the beginning and 235.2MB in the end (delta: -89.2MB). Peak memory consumption was 39.1MB. Max. memory is 8.0GB. [2023-12-22 12:24:24,711 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.31ms. Allocated memory is still 274.7MB. Free memory was 235.2MB in the beginning and 228.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-22 12:24:24,711 INFO L158 Benchmark]: Boogie Preprocessor took 125.43ms. Allocated memory is still 274.7MB. Free memory was 228.9MB in the beginning and 221.6MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-22 12:24:24,711 INFO L158 Benchmark]: RCFGBuilder took 2902.79ms. Allocated memory is still 274.7MB. Free memory was 221.6MB in the beginning and 179.9MB in the end (delta: 41.7MB). Peak memory consumption was 80.5MB. Max. memory is 8.0GB. [2023-12-22 12:24:24,711 INFO L158 Benchmark]: TraceAbstraction took 864417.67ms. Allocated memory was 274.7MB in the beginning and 589.3MB in the end (delta: 314.6MB). Free memory was 179.3MB in the beginning and 474.3MB in the end (delta: -295.0MB). Peak memory consumption was 342.3MB. Max. memory is 8.0GB. [2023-12-22 12:24:24,712 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 211.8MB. Free memory is still 162.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 543.25ms. Allocated memory was 211.8MB in the beginning and 274.7MB in the end (delta: 62.9MB). Free memory was 146.0MB in the beginning and 235.2MB in the end (delta: -89.2MB). Peak memory consumption was 39.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 87.31ms. Allocated memory is still 274.7MB. Free memory was 235.2MB in the beginning and 228.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 125.43ms. Allocated memory is still 274.7MB. Free memory was 228.9MB in the beginning and 221.6MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 2902.79ms. Allocated memory is still 274.7MB. Free memory was 221.6MB in the beginning and 179.9MB in the end (delta: 41.7MB). Peak memory consumption was 80.5MB. Max. memory is 8.0GB. * TraceAbstraction took 864417.67ms. Allocated memory was 274.7MB in the beginning and 589.3MB in the end (delta: 314.6MB). Free memory was 179.3MB in the beginning and 474.3MB in the end (delta: -295.0MB). Peak memory consumption was 342.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 155). Cancelled while NwaCegarLoop was constructing difference of abstraction (8205states) and FLOYD_HOARE automaton (currently 4 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (1366 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 864.4s, OverallIterations: 26, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 483.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 10327 SdHoareTripleChecker+Valid, 476.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10327 mSDsluCounter, 3217 SdHoareTripleChecker+Invalid, 431.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1230 mSDsCounter, 3443 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79468 IncrementalHoareTripleChecker+Invalid, 82913 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3443 mSolverCounterUnsat, 1987 mSDtfsCounter, 79468 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39950 GetRequests, 39720 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 11.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8205occurred in iteration=24, InterpolantAutomatonStates: 193, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 25 MinimizatonAttempts, 12568 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 4.9s SatisfiabilityAnalysisTime, 366.0s InterpolantComputationTime, 21867 NumberOfCodeBlocks, 21867 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 39900 ConstructedInterpolants, 0 QuantifiedInterpolants, 271844 SizeOfPredicates, 22 NumberOfNonLiveVariables, 24140 ConjunctsInSsa, 184 ConjunctsInUnsatCore, 43 InterpolantComputations, 16 PerfectInterpolantSequences, 102889/151562 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown