/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/locks/test_locks_11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 03:16:57,396 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 03:16:57,435 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 03:16:57,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 03:16:57,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 03:16:57,453 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 03:16:57,453 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 03:16:57,453 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 03:16:57,454 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 03:16:57,454 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 03:16:57,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 03:16:57,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 03:16:57,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 03:16:57,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 03:16:57,455 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 03:16:57,455 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 03:16:57,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 03:16:57,456 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 03:16:57,456 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 03:16:57,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 03:16:57,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 03:16:57,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 03:16:57,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 03:16:57,457 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 03:16:57,457 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 03:16:57,458 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 03:16:57,458 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 03:16:57,458 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 03:16:57,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 03:16:57,458 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 03:16:57,458 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 03:16:57,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 03:16:57,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 03:16:57,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 03:16:57,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:16:57,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 03:16:57,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 03:16:57,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 03:16:57,460 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 03:16:57,460 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 03:16:57,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 03:16:57,461 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 03:16:57,461 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 03:16:57,461 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 03:16:57,461 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 03:16:57,461 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 03:16:57,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 03:16:57,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 03:16:57,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 03:16:57,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 03:16:57,614 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 03:16:57,614 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 03:16:57,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_11.c [2023-12-22 03:16:58,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 03:16:58,837 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 03:16:58,837 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_11.c [2023-12-22 03:16:58,842 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/163b4cb9b/44ce8c576dac45b7be6eb8f555512cbb/FLAG2b994f6b0 [2023-12-22 03:16:58,854 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/163b4cb9b/44ce8c576dac45b7be6eb8f555512cbb [2023-12-22 03:16:58,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 03:16:58,856 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 03:16:58,857 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 03:16:58,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 03:16:58,860 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 03:16:58,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:16:58" (1/1) ... [2023-12-22 03:16:58,862 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a050d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:16:58, skipping insertion in model container [2023-12-22 03:16:58,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:16:58" (1/1) ... [2023-12-22 03:16:58,878 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 03:16:58,995 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_11.c[4246,4259] [2023-12-22 03:16:58,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:16:59,012 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 03:16:59,039 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_11.c[4246,4259] [2023-12-22 03:16:59,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:16:59,049 INFO L206 MainTranslator]: Completed translation [2023-12-22 03:16:59,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:16:59 WrapperNode [2023-12-22 03:16:59,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 03:16:59,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 03:16:59,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 03:16:59,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 03:16:59,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:16:59" (1/1) ... [2023-12-22 03:16:59,062 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:16:59" (1/1) ... [2023-12-22 03:16:59,075 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 148 [2023-12-22 03:16:59,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 03:16:59,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 03:16:59,076 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 03:16:59,076 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 03:16:59,083 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:16:59" (1/1) ... [2023-12-22 03:16:59,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:16:59" (1/1) ... [2023-12-22 03:16:59,086 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:16:59" (1/1) ... [2023-12-22 03:16:59,102 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 03:16:59,102 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:16:59" (1/1) ... [2023-12-22 03:16:59,102 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:16:59" (1/1) ... [2023-12-22 03:16:59,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:16:59" (1/1) ... [2023-12-22 03:16:59,112 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:16:59" (1/1) ... [2023-12-22 03:16:59,113 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:16:59" (1/1) ... [2023-12-22 03:16:59,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:16:59" (1/1) ... [2023-12-22 03:16:59,115 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 03:16:59,116 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 03:16:59,116 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 03:16:59,116 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 03:16:59,116 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:16:59" (1/1) ... [2023-12-22 03:16:59,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:16:59,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 03:16:59,175 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 03:16:59,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 03:16:59,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 03:16:59,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 03:16:59,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 03:16:59,183 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 03:16:59,255 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 03:16:59,264 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 03:16:59,491 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 03:16:59,515 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 03:16:59,515 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 03:16:59,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:16:59 BoogieIcfgContainer [2023-12-22 03:16:59,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 03:16:59,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 03:16:59,518 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 03:16:59,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 03:16:59,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:16:58" (1/3) ... [2023-12-22 03:16:59,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4266ff54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:16:59, skipping insertion in model container [2023-12-22 03:16:59,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:16:59" (2/3) ... [2023-12-22 03:16:59,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4266ff54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:16:59, skipping insertion in model container [2023-12-22 03:16:59,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:16:59" (3/3) ... [2023-12-22 03:16:59,524 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2023-12-22 03:16:59,541 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 03:16:59,541 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 03:16:59,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 03:16:59,593 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;@1a50829c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 03:16:59,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 03:16:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 40 states have internal predecessors, (76), 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 03:16:59,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-22 03:16:59,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:16:59,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:16:59,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:16:59,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:16:59,605 INFO L85 PathProgramCache]: Analyzing trace with hash 798475764, now seen corresponding path program 1 times [2023-12-22 03:16:59,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:16:59,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963781078] [2023-12-22 03:16:59,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:16:59,614 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 03:16:59,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:16:59,633 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 03:16:59,634 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 03:16:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:16:59,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:16:59,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:16:59,717 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 03:16:59,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:16:59,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:16:59,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963781078] [2023-12-22 03:16:59,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963781078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:16:59,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:16:59,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:16:59,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092600604] [2023-12-22 03:16:59,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:16:59,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:16:59,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:16:59,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:16:59,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:16:59,741 INFO L87 Difference]: Start difference. First operand has 41 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 40 states have internal predecessors, (76), 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 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 03:16:59,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:16:59,783 INFO L93 Difference]: Finished difference Result 84 states and 153 transitions. [2023-12-22 03:16:59,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:16:59,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-12-22 03:16:59,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:16:59,790 INFO L225 Difference]: With dead ends: 84 [2023-12-22 03:16:59,790 INFO L226 Difference]: Without dead ends: 74 [2023-12-22 03:16:59,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 03:16:59,794 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 55 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:16:59,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 142 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:16:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-22 03:16:59,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 50. [2023-12-22 03:16:59,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 49 states have internal predecessors, (93), 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 03:16:59,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 93 transitions. [2023-12-22 03:16:59,825 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 93 transitions. Word has length 17 [2023-12-22 03:16:59,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:16:59,826 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 93 transitions. [2023-12-22 03:16:59,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 03:16:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 93 transitions. [2023-12-22 03:16:59,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-22 03:16:59,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:16:59,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:16:59,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-22 03:17:00,031 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 03:17:00,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:00,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:00,032 INFO L85 PathProgramCache]: Analyzing trace with hash -212641486, now seen corresponding path program 1 times [2023-12-22 03:17:00,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:00,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045061103] [2023-12-22 03:17:00,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:00,033 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 03:17:00,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:00,037 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 03:17:00,047 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 03:17:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:00,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:00,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:00,099 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 03:17:00,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:00,100 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:00,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045061103] [2023-12-22 03:17:00,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045061103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:00,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:00,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:00,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203383301] [2023-12-22 03:17:00,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:00,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:00,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:00,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:00,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:00,102 INFO L87 Difference]: Start difference. First operand 50 states and 93 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 03:17:00,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:00,118 INFO L93 Difference]: Finished difference Result 123 states and 228 transitions. [2023-12-22 03:17:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:00,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-12-22 03:17:00,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:00,119 INFO L225 Difference]: With dead ends: 123 [2023-12-22 03:17:00,120 INFO L226 Difference]: Without dead ends: 74 [2023-12-22 03:17:00,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 03:17:00,121 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 53 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:00,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 154 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:00,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-22 03:17:00,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2023-12-22 03:17:00,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.8732394366197183) internal successors, (133), 71 states have internal predecessors, (133), 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 03:17:00,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 133 transitions. [2023-12-22 03:17:00,127 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 133 transitions. Word has length 17 [2023-12-22 03:17:00,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:00,127 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 133 transitions. [2023-12-22 03:17:00,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 03:17:00,128 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 133 transitions. [2023-12-22 03:17:00,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-22 03:17:00,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:00,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:17:00,130 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 03:17:00,335 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 03:17:00,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:00,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:00,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1016842068, now seen corresponding path program 1 times [2023-12-22 03:17:00,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:00,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792081373] [2023-12-22 03:17:00,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:00,339 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 03:17:00,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:00,345 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 03:17:00,389 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 03:17:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:00,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:00,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:00,447 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 03:17:00,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:00,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:00,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792081373] [2023-12-22 03:17:00,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792081373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:00,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:00,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:00,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097147185] [2023-12-22 03:17:00,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:00,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:00,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:00,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:00,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:00,456 INFO L87 Difference]: Start difference. First operand 72 states and 133 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 03:17:00,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:00,482 INFO L93 Difference]: Finished difference Result 113 states and 203 transitions. [2023-12-22 03:17:00,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:00,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-12-22 03:17:00,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:00,483 INFO L225 Difference]: With dead ends: 113 [2023-12-22 03:17:00,483 INFO L226 Difference]: Without dead ends: 77 [2023-12-22 03:17:00,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 03:17:00,485 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 55 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:00,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 173 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:00,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-22 03:17:00,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2023-12-22 03:17:00,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.8243243243243243) internal successors, (135), 74 states have internal predecessors, (135), 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 03:17:00,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 135 transitions. [2023-12-22 03:17:00,491 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 135 transitions. Word has length 18 [2023-12-22 03:17:00,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:00,491 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 135 transitions. [2023-12-22 03:17:00,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 03:17:00,492 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 135 transitions. [2023-12-22 03:17:00,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-22 03:17:00,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:00,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:17:00,496 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 03:17:00,692 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 03:17:00,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:00,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:00,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1998261550, now seen corresponding path program 1 times [2023-12-22 03:17:00,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:00,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672640962] [2023-12-22 03:17:00,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:00,695 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 03:17:00,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:00,700 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 03:17:00,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 03:17:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:00,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:00,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:00,746 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 03:17:00,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:00,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:00,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672640962] [2023-12-22 03:17:00,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672640962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:00,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:00,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:00,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815297453] [2023-12-22 03:17:00,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:00,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:00,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:00,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:00,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:00,749 INFO L87 Difference]: Start difference. First operand 75 states and 135 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 03:17:00,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:00,762 INFO L93 Difference]: Finished difference Result 144 states and 260 transitions. [2023-12-22 03:17:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:00,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-12-22 03:17:00,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:00,763 INFO L225 Difference]: With dead ends: 144 [2023-12-22 03:17:00,763 INFO L226 Difference]: Without dead ends: 142 [2023-12-22 03:17:00,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 03:17:00,764 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 50 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:00,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 134 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:00,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-22 03:17:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 100. [2023-12-22 03:17:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.8181818181818181) internal successors, (180), 99 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 03:17:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 180 transitions. [2023-12-22 03:17:00,772 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 180 transitions. Word has length 18 [2023-12-22 03:17:00,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:00,772 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 180 transitions. [2023-12-22 03:17:00,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 03:17:00,772 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 180 transitions. [2023-12-22 03:17:00,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-22 03:17:00,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:00,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:17:00,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-22 03:17:00,975 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 03:17:00,975 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:00,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:00,976 INFO L85 PathProgramCache]: Analyzing trace with hash 987144300, now seen corresponding path program 1 times [2023-12-22 03:17:00,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:00,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769815898] [2023-12-22 03:17:00,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:00,976 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 03:17:00,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:00,977 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 03:17:00,979 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 03:17:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:01,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:01,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:01,023 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 03:17:01,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:01,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:01,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769815898] [2023-12-22 03:17:01,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769815898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:01,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:01,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:01,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406030660] [2023-12-22 03:17:01,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:01,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:01,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:01,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:01,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:01,025 INFO L87 Difference]: Start difference. First operand 100 states and 180 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 03:17:01,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:01,054 INFO L93 Difference]: Finished difference Result 240 states and 434 transitions. [2023-12-22 03:17:01,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:01,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-12-22 03:17:01,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:01,056 INFO L225 Difference]: With dead ends: 240 [2023-12-22 03:17:01,056 INFO L226 Difference]: Without dead ends: 144 [2023-12-22 03:17:01,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 03:17:01,058 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 52 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:01,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 155 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:01,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-22 03:17:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2023-12-22 03:17:01,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.801418439716312) internal successors, (254), 141 states have internal predecessors, (254), 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 03:17:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 254 transitions. [2023-12-22 03:17:01,078 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 254 transitions. Word has length 18 [2023-12-22 03:17:01,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:01,079 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 254 transitions. [2023-12-22 03:17:01,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 03:17:01,079 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 254 transitions. [2023-12-22 03:17:01,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-22 03:17:01,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:01,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:17:01,083 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 (6)] Ended with exit code 0 [2023-12-22 03:17:01,283 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 03:17:01,284 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:01,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1816779271, now seen corresponding path program 1 times [2023-12-22 03:17:01,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:01,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586450336] [2023-12-22 03:17:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:01,285 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 03:17:01,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:01,286 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 03:17:01,287 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 03:17:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:01,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:01,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:01,352 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 03:17:01,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:01,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:01,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586450336] [2023-12-22 03:17:01,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586450336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:01,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:01,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:01,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939231870] [2023-12-22 03:17:01,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:01,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:01,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:01,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:01,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:01,354 INFO L87 Difference]: Start difference. First operand 142 states and 254 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 03:17:01,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:01,364 INFO L93 Difference]: Finished difference Result 215 states and 381 transitions. [2023-12-22 03:17:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:01,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2023-12-22 03:17:01,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:01,365 INFO L225 Difference]: With dead ends: 215 [2023-12-22 03:17:01,365 INFO L226 Difference]: Without dead ends: 146 [2023-12-22 03:17:01,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 03:17:01,366 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 54 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:01,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 169 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:01,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-22 03:17:01,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2023-12-22 03:17:01,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.7762237762237763) internal successors, (254), 143 states have internal predecessors, (254), 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 03:17:01,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 254 transitions. [2023-12-22 03:17:01,373 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 254 transitions. Word has length 19 [2023-12-22 03:17:01,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:01,373 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 254 transitions. [2023-12-22 03:17:01,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 03:17:01,373 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 254 transitions. [2023-12-22 03:17:01,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-22 03:17:01,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:01,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:17:01,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-22 03:17:01,584 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 03:17:01,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:01,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:01,585 INFO L85 PathProgramCache]: Analyzing trace with hash 536915593, now seen corresponding path program 1 times [2023-12-22 03:17:01,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:01,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202266094] [2023-12-22 03:17:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:01,585 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 03:17:01,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:01,586 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 03:17:01,588 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 03:17:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:01,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:01,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:01,629 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 03:17:01,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:01,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:01,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202266094] [2023-12-22 03:17:01,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202266094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:01,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:01,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:01,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519311057] [2023-12-22 03:17:01,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:01,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:01,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:01,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:01,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:01,631 INFO L87 Difference]: Start difference. First operand 144 states and 254 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 03:17:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:01,643 INFO L93 Difference]: Finished difference Result 416 states and 736 transitions. [2023-12-22 03:17:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:01,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2023-12-22 03:17:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:01,645 INFO L225 Difference]: With dead ends: 416 [2023-12-22 03:17:01,645 INFO L226 Difference]: Without dead ends: 278 [2023-12-22 03:17:01,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 03:17:01,646 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 52 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:01,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 136 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:01,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-22 03:17:01,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 276. [2023-12-22 03:17:01,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.7527272727272727) internal successors, (482), 275 states have internal predecessors, (482), 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 03:17:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 482 transitions. [2023-12-22 03:17:01,656 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 482 transitions. Word has length 19 [2023-12-22 03:17:01,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:01,656 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 482 transitions. [2023-12-22 03:17:01,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 03:17:01,657 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 482 transitions. [2023-12-22 03:17:01,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-22 03:17:01,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:01,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:17:01,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-22 03:17:01,881 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 03:17:01,881 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:01,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:01,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1548032843, now seen corresponding path program 1 times [2023-12-22 03:17:01,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:01,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006764720] [2023-12-22 03:17:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:01,882 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 03:17:01,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:01,883 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 03:17:01,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-22 03:17:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:01,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:01,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:01,938 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 03:17:01,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:01,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:01,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006764720] [2023-12-22 03:17:01,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006764720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:01,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:01,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:01,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040725756] [2023-12-22 03:17:01,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:01,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:01,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:01,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:01,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:01,940 INFO L87 Difference]: Start difference. First operand 276 states and 482 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 03:17:01,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:01,951 INFO L93 Difference]: Finished difference Result 352 states and 620 transitions. [2023-12-22 03:17:01,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:01,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2023-12-22 03:17:01,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:01,953 INFO L225 Difference]: With dead ends: 352 [2023-12-22 03:17:01,953 INFO L226 Difference]: Without dead ends: 350 [2023-12-22 03:17:01,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 03:17:01,954 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 47 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:01,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 185 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:01,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-12-22 03:17:01,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 276. [2023-12-22 03:17:01,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.7381818181818183) internal successors, (478), 275 states have internal predecessors, (478), 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 03:17:01,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 478 transitions. [2023-12-22 03:17:01,961 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 478 transitions. Word has length 19 [2023-12-22 03:17:01,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:01,961 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 478 transitions. [2023-12-22 03:17:01,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 03:17:01,962 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 478 transitions. [2023-12-22 03:17:01,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-22 03:17:01,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:01,962 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] [2023-12-22 03:17:01,976 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 03:17:02,164 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 03:17:02,165 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:02,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:02,165 INFO L85 PathProgramCache]: Analyzing trace with hash -535272095, now seen corresponding path program 1 times [2023-12-22 03:17:02,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:02,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310439173] [2023-12-22 03:17:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:02,166 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 03:17:02,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:02,167 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 03:17:02,173 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 03:17:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:02,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:02,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:02,208 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 03:17:02,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:02,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:02,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310439173] [2023-12-22 03:17:02,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310439173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:02,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:02,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:02,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485265181] [2023-12-22 03:17:02,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:02,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:02,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:02,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:02,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:02,209 INFO L87 Difference]: Start difference. First operand 276 states and 478 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 03:17:02,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:02,223 INFO L93 Difference]: Finished difference Result 516 states and 904 transitions. [2023-12-22 03:17:02,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:02,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2023-12-22 03:17:02,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:02,225 INFO L225 Difference]: With dead ends: 516 [2023-12-22 03:17:02,225 INFO L226 Difference]: Without dead ends: 514 [2023-12-22 03:17:02,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 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 03:17:02,225 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 44 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:02,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 130 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:02,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-12-22 03:17:02,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 384. [2023-12-22 03:17:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.7075718015665797) internal successors, (654), 383 states have internal predecessors, (654), 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 03:17:02,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 654 transitions. [2023-12-22 03:17:02,235 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 654 transitions. Word has length 20 [2023-12-22 03:17:02,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:02,235 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 654 transitions. [2023-12-22 03:17:02,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 03:17:02,235 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 654 transitions. [2023-12-22 03:17:02,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-22 03:17:02,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:02,239 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] [2023-12-22 03:17:02,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-22 03:17:02,441 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 03:17:02,441 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:02,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:02,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1546389345, now seen corresponding path program 1 times [2023-12-22 03:17:02,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:02,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831085860] [2023-12-22 03:17:02,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:02,443 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 03:17:02,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:02,444 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 03:17:02,453 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 03:17:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:02,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:02,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:02,512 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 03:17:02,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:02,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:02,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831085860] [2023-12-22 03:17:02,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831085860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:02,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:02,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:02,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384149479] [2023-12-22 03:17:02,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:02,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:02,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:02,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:02,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:02,514 INFO L87 Difference]: Start difference. First operand 384 states and 654 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 03:17:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:02,532 INFO L93 Difference]: Finished difference Result 916 states and 1568 transitions. [2023-12-22 03:17:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:02,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2023-12-22 03:17:02,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:02,534 INFO L225 Difference]: With dead ends: 916 [2023-12-22 03:17:02,534 INFO L226 Difference]: Without dead ends: 538 [2023-12-22 03:17:02,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 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 03:17:02,536 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 50 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:02,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 157 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:02,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-12-22 03:17:02,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2023-12-22 03:17:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.6934579439252337) internal successors, (906), 535 states have internal predecessors, (906), 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 03:17:02,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 906 transitions. [2023-12-22 03:17:02,551 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 906 transitions. Word has length 20 [2023-12-22 03:17:02,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:02,551 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 906 transitions. [2023-12-22 03:17:02,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 03:17:02,551 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 906 transitions. [2023-12-22 03:17:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-22 03:17:02,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:02,552 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] [2023-12-22 03:17:02,555 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 03:17:02,754 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 03:17:02,754 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:02,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:02,756 INFO L85 PathProgramCache]: Analyzing trace with hash 586648286, now seen corresponding path program 1 times [2023-12-22 03:17:02,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:02,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431878235] [2023-12-22 03:17:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:02,756 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 03:17:02,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:02,765 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 03:17:02,766 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 (12)] Waiting until timeout for monitored process [2023-12-22 03:17:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:02,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:02,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:02,800 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 03:17:02,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:02,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:02,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431878235] [2023-12-22 03:17:02,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431878235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:02,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:02,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:02,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282291382] [2023-12-22 03:17:02,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:02,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:02,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:02,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:02,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:02,801 INFO L87 Difference]: Start difference. First operand 536 states and 906 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 03:17:02,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:02,815 INFO L93 Difference]: Finished difference Result 812 states and 1368 transitions. [2023-12-22 03:17:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:02,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2023-12-22 03:17:02,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:02,817 INFO L225 Difference]: With dead ends: 812 [2023-12-22 03:17:02,817 INFO L226 Difference]: Without dead ends: 550 [2023-12-22 03:17:02,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 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 03:17:02,818 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 52 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:02,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 161 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:02,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-12-22 03:17:02,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 548. [2023-12-22 03:17:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 1.6709323583180986) internal successors, (914), 547 states have internal predecessors, (914), 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 03:17:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 914 transitions. [2023-12-22 03:17:02,830 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 914 transitions. Word has length 21 [2023-12-22 03:17:02,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:02,830 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 914 transitions. [2023-12-22 03:17:02,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 03:17:02,830 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 914 transitions. [2023-12-22 03:17:02,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-22 03:17:02,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:02,831 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] [2023-12-22 03:17:02,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-22 03:17:03,033 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 03:17:03,033 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:03,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:03,033 INFO L85 PathProgramCache]: Analyzing trace with hash -693215392, now seen corresponding path program 1 times [2023-12-22 03:17:03,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:03,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198033382] [2023-12-22 03:17:03,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:03,034 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 03:17:03,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:03,035 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 03:17:03,036 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 03:17:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:03,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:03,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:03,103 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 03:17:03,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:03,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:03,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198033382] [2023-12-22 03:17:03,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198033382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:03,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:03,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:03,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846094633] [2023-12-22 03:17:03,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:03,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:03,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:03,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:03,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:03,104 INFO L87 Difference]: Start difference. First operand 548 states and 914 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 03:17:03,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:03,124 INFO L93 Difference]: Finished difference Result 1000 states and 1692 transitions. [2023-12-22 03:17:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:03,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2023-12-22 03:17:03,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:03,127 INFO L225 Difference]: With dead ends: 1000 [2023-12-22 03:17:03,128 INFO L226 Difference]: Without dead ends: 998 [2023-12-22 03:17:03,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 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 03:17:03,128 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 41 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:03,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 128 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:03,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2023-12-22 03:17:03,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 772. [2023-12-22 03:17:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 1.6316472114137484) internal successors, (1258), 771 states have internal predecessors, (1258), 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 03:17:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1258 transitions. [2023-12-22 03:17:03,145 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1258 transitions. Word has length 21 [2023-12-22 03:17:03,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:03,145 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 1258 transitions. [2023-12-22 03:17:03,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 03:17:03,145 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1258 transitions. [2023-12-22 03:17:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-22 03:17:03,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:03,146 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] [2023-12-22 03:17:03,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-22 03:17:03,348 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 03:17:03,348 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:03,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:03,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1704332642, now seen corresponding path program 1 times [2023-12-22 03:17:03,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:03,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892166117] [2023-12-22 03:17:03,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:03,349 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 03:17:03,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:03,351 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 03:17:03,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-22 03:17:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:03,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:03,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:03,412 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 03:17:03,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:03,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:03,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892166117] [2023-12-22 03:17:03,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892166117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:03,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:03,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:03,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323391566] [2023-12-22 03:17:03,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:03,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:03,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:03,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:03,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:03,424 INFO L87 Difference]: Start difference. First operand 772 states and 1258 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 03:17:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:03,448 INFO L93 Difference]: Finished difference Result 1816 states and 2972 transitions. [2023-12-22 03:17:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:03,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2023-12-22 03:17:03,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:03,452 INFO L225 Difference]: With dead ends: 1816 [2023-12-22 03:17:03,452 INFO L226 Difference]: Without dead ends: 1062 [2023-12-22 03:17:03,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 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 03:17:03,454 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 49 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:03,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 158 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:03,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2023-12-22 03:17:03,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1060. [2023-12-22 03:17:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1059 states have (on average 1.6185080264400378) internal successors, (1714), 1059 states have internal predecessors, (1714), 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 03:17:03,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1714 transitions. [2023-12-22 03:17:03,477 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1714 transitions. Word has length 21 [2023-12-22 03:17:03,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:03,478 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1714 transitions. [2023-12-22 03:17:03,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 03:17:03,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1714 transitions. [2023-12-22 03:17:03,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-22 03:17:03,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:03,479 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] [2023-12-22 03:17:03,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-22 03:17:03,681 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 03:17:03,682 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:03,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:03,682 INFO L85 PathProgramCache]: Analyzing trace with hash -14626284, now seen corresponding path program 1 times [2023-12-22 03:17:03,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:03,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157059499] [2023-12-22 03:17:03,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:03,683 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 03:17:03,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:03,684 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 03:17:03,685 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 03:17:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:03,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:03,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:03,747 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 03:17:03,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:03,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:03,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157059499] [2023-12-22 03:17:03,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157059499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:03,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:03,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:03,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395023182] [2023-12-22 03:17:03,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:03,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:03,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:03,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:03,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:03,748 INFO L87 Difference]: Start difference. First operand 1060 states and 1714 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 03:17:03,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:03,773 INFO L93 Difference]: Finished difference Result 1592 states and 2564 transitions. [2023-12-22 03:17:03,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:03,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2023-12-22 03:17:03,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:03,776 INFO L225 Difference]: With dead ends: 1592 [2023-12-22 03:17:03,776 INFO L226 Difference]: Without dead ends: 1078 [2023-12-22 03:17:03,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 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 03:17:03,778 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 51 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:03,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 157 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:03,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2023-12-22 03:17:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1076. [2023-12-22 03:17:03,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1075 states have (on average 1.5944186046511628) internal successors, (1714), 1075 states have internal predecessors, (1714), 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 03:17:03,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1714 transitions. [2023-12-22 03:17:03,821 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1714 transitions. Word has length 22 [2023-12-22 03:17:03,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:03,821 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1714 transitions. [2023-12-22 03:17:03,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 03:17:03,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1714 transitions. [2023-12-22 03:17:03,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-22 03:17:03,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:03,822 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] [2023-12-22 03:17:03,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-22 03:17:04,029 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 03:17:04,029 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:04,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:04,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1294489962, now seen corresponding path program 1 times [2023-12-22 03:17:04,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:04,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301140414] [2023-12-22 03:17:04,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:04,030 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 03:17:04,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:04,033 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 03:17:04,034 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 03:17:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:04,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:04,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:04,082 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 03:17:04,083 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:04,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:04,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301140414] [2023-12-22 03:17:04,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301140414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:04,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:04,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:04,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799868146] [2023-12-22 03:17:04,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:04,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:04,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:04,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:04,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:04,084 INFO L87 Difference]: Start difference. First operand 1076 states and 1714 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 03:17:04,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:04,117 INFO L93 Difference]: Finished difference Result 1928 states and 3124 transitions. [2023-12-22 03:17:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:04,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2023-12-22 03:17:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:04,123 INFO L225 Difference]: With dead ends: 1928 [2023-12-22 03:17:04,123 INFO L226 Difference]: Without dead ends: 1926 [2023-12-22 03:17:04,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 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 03:17:04,124 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 38 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:04,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 126 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:04,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2023-12-22 03:17:04,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1540. [2023-12-22 03:17:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1539 states have (on average 1.5503573749187785) internal successors, (2386), 1539 states have internal predecessors, (2386), 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 03:17:04,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2386 transitions. [2023-12-22 03:17:04,158 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2386 transitions. Word has length 22 [2023-12-22 03:17:04,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:04,159 INFO L495 AbstractCegarLoop]: Abstraction has 1540 states and 2386 transitions. [2023-12-22 03:17:04,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 03:17:04,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2386 transitions. [2023-12-22 03:17:04,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-22 03:17:04,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:04,160 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] [2023-12-22 03:17:04,174 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 03:17:04,362 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 03:17:04,362 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:04,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:04,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1989360084, now seen corresponding path program 1 times [2023-12-22 03:17:04,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:04,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539994687] [2023-12-22 03:17:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:04,363 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 03:17:04,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:04,364 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 03:17:04,366 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 03:17:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:04,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:04,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:04,411 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 03:17:04,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:04,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:04,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539994687] [2023-12-22 03:17:04,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539994687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:04,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:04,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:04,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472851722] [2023-12-22 03:17:04,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:04,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:04,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:04,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:04,412 INFO L87 Difference]: Start difference. First operand 1540 states and 2386 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 03:17:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:04,452 INFO L93 Difference]: Finished difference Result 3592 states and 5588 transitions. [2023-12-22 03:17:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:04,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2023-12-22 03:17:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:04,458 INFO L225 Difference]: With dead ends: 3592 [2023-12-22 03:17:04,458 INFO L226 Difference]: Without dead ends: 2086 [2023-12-22 03:17:04,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 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 03:17:04,460 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 48 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:04,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 159 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:04,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2023-12-22 03:17:04,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 2084. [2023-12-22 03:17:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2083 states have (on average 1.5372059529524724) internal successors, (3202), 2083 states have internal predecessors, (3202), 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 03:17:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 3202 transitions. [2023-12-22 03:17:04,509 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 3202 transitions. Word has length 22 [2023-12-22 03:17:04,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:04,509 INFO L495 AbstractCegarLoop]: Abstraction has 2084 states and 3202 transitions. [2023-12-22 03:17:04,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 03:17:04,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 3202 transitions. [2023-12-22 03:17:04,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-22 03:17:04,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:04,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:17:04,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-22 03:17:04,733 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 03:17:04,733 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:04,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:04,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1474268429, now seen corresponding path program 1 times [2023-12-22 03:17:04,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:04,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476951211] [2023-12-22 03:17:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:04,734 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 03:17:04,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:04,750 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 03:17:04,778 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 03:17:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:04,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:04,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:17:04,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:04,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:04,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476951211] [2023-12-22 03:17:04,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476951211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:04,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:04,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:04,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86778803] [2023-12-22 03:17:04,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:04,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:04,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:04,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:04,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:04,831 INFO L87 Difference]: Start difference. First operand 2084 states and 3202 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 03:17:04,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:04,867 INFO L93 Difference]: Finished difference Result 3128 states and 4788 transitions. [2023-12-22 03:17:04,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:04,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2023-12-22 03:17:04,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:04,873 INFO L225 Difference]: With dead ends: 3128 [2023-12-22 03:17:04,873 INFO L226 Difference]: Without dead ends: 2118 [2023-12-22 03:17:04,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 03:17:04,874 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 50 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:04,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 153 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:04,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2023-12-22 03:17:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 2116. [2023-12-22 03:17:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 2115 states have (on average 1.5139479905437352) internal successors, (3202), 2115 states have internal predecessors, (3202), 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 03:17:04,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 3202 transitions. [2023-12-22 03:17:04,921 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 3202 transitions. Word has length 23 [2023-12-22 03:17:04,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:04,921 INFO L495 AbstractCegarLoop]: Abstraction has 2116 states and 3202 transitions. [2023-12-22 03:17:04,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 03:17:04,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 3202 transitions. [2023-12-22 03:17:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-22 03:17:04,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:04,923 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] [2023-12-22 03:17:04,934 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 03:17:05,125 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 03:17:05,125 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:05,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:05,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1540835189, now seen corresponding path program 1 times [2023-12-22 03:17:05,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:05,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448945148] [2023-12-22 03:17:05,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:05,126 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 03:17:05,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:05,127 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 03:17:05,129 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 03:17:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:05,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:05,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:05,161 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 03:17:05,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:05,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:05,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448945148] [2023-12-22 03:17:05,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448945148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:05,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:05,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:05,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128471799] [2023-12-22 03:17:05,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:05,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:05,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:05,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:05,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:05,162 INFO L87 Difference]: Start difference. First operand 2116 states and 3202 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 03:17:05,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:05,216 INFO L93 Difference]: Finished difference Result 3720 states and 5732 transitions. [2023-12-22 03:17:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:05,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2023-12-22 03:17:05,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:05,226 INFO L225 Difference]: With dead ends: 3720 [2023-12-22 03:17:05,226 INFO L226 Difference]: Without dead ends: 3718 [2023-12-22 03:17:05,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 03:17:05,227 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 35 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:05,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 124 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:05,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2023-12-22 03:17:05,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 3076. [2023-12-22 03:17:05,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3076 states, 3075 states have (on average 1.4679674796747968) internal successors, (4514), 3075 states have internal predecessors, (4514), 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 03:17:05,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 4514 transitions. [2023-12-22 03:17:05,318 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 4514 transitions. Word has length 23 [2023-12-22 03:17:05,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:05,319 INFO L495 AbstractCegarLoop]: Abstraction has 3076 states and 4514 transitions. [2023-12-22 03:17:05,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 03:17:05,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 4514 transitions. [2023-12-22 03:17:05,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-22 03:17:05,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:05,322 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] [2023-12-22 03:17:05,339 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 03:17:05,524 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 03:17:05,525 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:05,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:05,525 INFO L85 PathProgramCache]: Analyzing trace with hash 529717939, now seen corresponding path program 1 times [2023-12-22 03:17:05,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:05,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061384624] [2023-12-22 03:17:05,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:05,525 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 03:17:05,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:05,527 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 03:17:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:05,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:05,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:05,565 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 03:17:05,574 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 03:17:05,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:05,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:05,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061384624] [2023-12-22 03:17:05,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061384624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:05,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:05,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:05,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589151003] [2023-12-22 03:17:05,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:05,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:05,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:05,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:05,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:05,576 INFO L87 Difference]: Start difference. First operand 3076 states and 4514 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 03:17:05,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:05,646 INFO L93 Difference]: Finished difference Result 7112 states and 10468 transitions. [2023-12-22 03:17:05,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:05,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2023-12-22 03:17:05,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:05,656 INFO L225 Difference]: With dead ends: 7112 [2023-12-22 03:17:05,657 INFO L226 Difference]: Without dead ends: 4102 [2023-12-22 03:17:05,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 03:17:05,660 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 47 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:05,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 160 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:05,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2023-12-22 03:17:05,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4100. [2023-12-22 03:17:05,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4100 states, 4099 states have (on average 1.4525494022932424) internal successors, (5954), 4099 states have internal predecessors, (5954), 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 03:17:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 5954 transitions. [2023-12-22 03:17:05,778 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 5954 transitions. Word has length 23 [2023-12-22 03:17:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:05,778 INFO L495 AbstractCegarLoop]: Abstraction has 4100 states and 5954 transitions. [2023-12-22 03:17:05,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 03:17:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 5954 transitions. [2023-12-22 03:17:05,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-22 03:17:05,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:05,781 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] [2023-12-22 03:17:05,794 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 03:17:05,984 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 03:17:05,984 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:05,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:05,984 INFO L85 PathProgramCache]: Analyzing trace with hash 521465673, now seen corresponding path program 1 times [2023-12-22 03:17:05,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:05,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915625730] [2023-12-22 03:17:05,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:05,985 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 03:17:05,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:06,002 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 03:17:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:06,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:06,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:06,028 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 03:17:06,038 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 03:17:06,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:06,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:06,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915625730] [2023-12-22 03:17:06,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915625730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:06,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:06,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:06,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008990163] [2023-12-22 03:17:06,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:06,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:06,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:06,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:06,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:06,040 INFO L87 Difference]: Start difference. First operand 4100 states and 5954 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 03:17:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:06,104 INFO L93 Difference]: Finished difference Result 6152 states and 8900 transitions. [2023-12-22 03:17:06,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:06,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2023-12-22 03:17:06,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:06,114 INFO L225 Difference]: With dead ends: 6152 [2023-12-22 03:17:06,114 INFO L226 Difference]: Without dead ends: 4166 [2023-12-22 03:17:06,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 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 03:17:06,117 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 49 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:06,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 149 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:06,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2023-12-22 03:17:06,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 4164. [2023-12-22 03:17:06,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4164 states, 4163 states have (on average 1.430218592361278) internal successors, (5954), 4163 states have internal predecessors, (5954), 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 03:17:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4164 states to 4164 states and 5954 transitions. [2023-12-22 03:17:06,270 INFO L78 Accepts]: Start accepts. Automaton has 4164 states and 5954 transitions. Word has length 24 [2023-12-22 03:17:06,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:06,270 INFO L495 AbstractCegarLoop]: Abstraction has 4164 states and 5954 transitions. [2023-12-22 03:17:06,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 03:17:06,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 5954 transitions. [2023-12-22 03:17:06,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-22 03:17:06,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:06,273 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] [2023-12-22 03:17:06,277 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 03:17:06,475 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 03:17:06,475 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:06,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:06,476 INFO L85 PathProgramCache]: Analyzing trace with hash -758398005, now seen corresponding path program 1 times [2023-12-22 03:17:06,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:06,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076937613] [2023-12-22 03:17:06,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:06,476 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 03:17:06,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:06,479 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 03:17:06,481 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 03:17:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:06,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:06,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:17:06,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:06,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:06,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076937613] [2023-12-22 03:17:06,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076937613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:06,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:06,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:06,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723372743] [2023-12-22 03:17:06,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:06,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:06,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:06,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:06,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:06,516 INFO L87 Difference]: Start difference. First operand 4164 states and 5954 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 03:17:06,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:06,612 INFO L93 Difference]: Finished difference Result 7176 states and 10436 transitions. [2023-12-22 03:17:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:06,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2023-12-22 03:17:06,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:06,634 INFO L225 Difference]: With dead ends: 7176 [2023-12-22 03:17:06,635 INFO L226 Difference]: Without dead ends: 7174 [2023-12-22 03:17:06,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 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 03:17:06,637 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 32 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:06,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 122 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:06,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7174 states. [2023-12-22 03:17:06,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7174 to 6148. [2023-12-22 03:17:06,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 1.3850658857979503) internal successors, (8514), 6147 states have internal predecessors, (8514), 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 03:17:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 8514 transitions. [2023-12-22 03:17:06,798 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 8514 transitions. Word has length 24 [2023-12-22 03:17:06,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:06,799 INFO L495 AbstractCegarLoop]: Abstraction has 6148 states and 8514 transitions. [2023-12-22 03:17:06,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 03:17:06,799 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 8514 transitions. [2023-12-22 03:17:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-22 03:17:06,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:06,806 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] [2023-12-22 03:17:06,823 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 03:17:07,008 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 03:17:07,008 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:07,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:07,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1769515255, now seen corresponding path program 1 times [2023-12-22 03:17:07,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:07,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436197815] [2023-12-22 03:17:07,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:07,009 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 03:17:07,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:07,011 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 03:17:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:07,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:07,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:07,034 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 03:17:07,047 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 03:17:07,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:07,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:07,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436197815] [2023-12-22 03:17:07,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436197815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:07,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:07,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:07,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761181855] [2023-12-22 03:17:07,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:07,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:07,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:07,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:07,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:07,049 INFO L87 Difference]: Start difference. First operand 6148 states and 8514 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 03:17:07,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:07,196 INFO L93 Difference]: Finished difference Result 14088 states and 19524 transitions. [2023-12-22 03:17:07,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:07,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2023-12-22 03:17:07,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:07,206 INFO L225 Difference]: With dead ends: 14088 [2023-12-22 03:17:07,206 INFO L226 Difference]: Without dead ends: 8070 [2023-12-22 03:17:07,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 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 03:17:07,212 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 46 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:07,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 161 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:07,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8070 states. [2023-12-22 03:17:07,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8070 to 8068. [2023-12-22 03:17:07,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8068 states, 8067 states have (on average 1.36481963555225) internal successors, (11010), 8067 states have internal predecessors, (11010), 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 03:17:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8068 states to 8068 states and 11010 transitions. [2023-12-22 03:17:07,417 INFO L78 Accepts]: Start accepts. Automaton has 8068 states and 11010 transitions. Word has length 24 [2023-12-22 03:17:07,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:07,417 INFO L495 AbstractCegarLoop]: Abstraction has 8068 states and 11010 transitions. [2023-12-22 03:17:07,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 03:17:07,417 INFO L276 IsEmpty]: Start isEmpty. Operand 8068 states and 11010 transitions. [2023-12-22 03:17:07,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-22 03:17:07,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:07,422 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] [2023-12-22 03:17:07,430 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 03:17:07,624 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 03:17:07,624 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:07,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:07,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2035286264, now seen corresponding path program 1 times [2023-12-22 03:17:07,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:07,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015778699] [2023-12-22 03:17:07,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:07,625 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 03:17:07,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:07,626 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 03:17:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:07,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:07,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:07,645 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 03:17:07,656 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 03:17:07,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:07,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:07,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015778699] [2023-12-22 03:17:07,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015778699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:07,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:07,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:07,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860704782] [2023-12-22 03:17:07,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:07,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:07,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:07,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:07,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:07,658 INFO L87 Difference]: Start difference. First operand 8068 states and 11010 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 03:17:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:07,746 INFO L93 Difference]: Finished difference Result 12104 states and 16452 transitions. [2023-12-22 03:17:07,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:07,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2023-12-22 03:17:07,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:07,755 INFO L225 Difference]: With dead ends: 12104 [2023-12-22 03:17:07,755 INFO L226 Difference]: Without dead ends: 8198 [2023-12-22 03:17:07,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 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 03:17:07,759 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 48 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:07,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 145 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:07,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8198 states. [2023-12-22 03:17:07,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8198 to 8196. [2023-12-22 03:17:07,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8196 states, 8195 states have (on average 1.3435021354484442) internal successors, (11010), 8195 states have internal predecessors, (11010), 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 03:17:07,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8196 states to 8196 states and 11010 transitions. [2023-12-22 03:17:07,942 INFO L78 Accepts]: Start accepts. Automaton has 8196 states and 11010 transitions. Word has length 25 [2023-12-22 03:17:07,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:07,942 INFO L495 AbstractCegarLoop]: Abstraction has 8196 states and 11010 transitions. [2023-12-22 03:17:07,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 03:17:07,942 INFO L276 IsEmpty]: Start isEmpty. Operand 8196 states and 11010 transitions. [2023-12-22 03:17:07,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-22 03:17:07,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:07,947 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] [2023-12-22 03:17:07,961 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 03:17:08,149 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 03:17:08,149 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:08,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:08,150 INFO L85 PathProgramCache]: Analyzing trace with hash 979817354, now seen corresponding path program 1 times [2023-12-22 03:17:08,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:08,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707349105] [2023-12-22 03:17:08,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:08,150 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 03:17:08,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:08,151 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 03:17:08,153 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 03:17:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:08,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:08,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:08,189 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 03:17:08,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:08,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:08,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707349105] [2023-12-22 03:17:08,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707349105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:08,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:08,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:08,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729045008] [2023-12-22 03:17:08,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:08,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:08,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:08,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:08,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:08,190 INFO L87 Difference]: Start difference. First operand 8196 states and 11010 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 03:17:08,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:08,370 INFO L93 Difference]: Finished difference Result 13832 states and 18820 transitions. [2023-12-22 03:17:08,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:08,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2023-12-22 03:17:08,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:08,410 INFO L225 Difference]: With dead ends: 13832 [2023-12-22 03:17:08,411 INFO L226 Difference]: Without dead ends: 13830 [2023-12-22 03:17:08,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 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 03:17:08,413 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 29 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:08,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 120 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:08,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13830 states. [2023-12-22 03:17:08,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13830 to 12292. [2023-12-22 03:17:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12292 states, 12291 states have (on average 1.3019282401757384) internal successors, (16002), 12291 states have internal predecessors, (16002), 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 03:17:08,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12292 states to 12292 states and 16002 transitions. [2023-12-22 03:17:08,652 INFO L78 Accepts]: Start accepts. Automaton has 12292 states and 16002 transitions. Word has length 25 [2023-12-22 03:17:08,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:08,652 INFO L495 AbstractCegarLoop]: Abstraction has 12292 states and 16002 transitions. [2023-12-22 03:17:08,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 03:17:08,652 INFO L276 IsEmpty]: Start isEmpty. Operand 12292 states and 16002 transitions. [2023-12-22 03:17:08,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-22 03:17:08,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:08,662 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] [2023-12-22 03:17:08,675 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 03:17:08,864 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 03:17:08,864 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:08,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:08,865 INFO L85 PathProgramCache]: Analyzing trace with hash -31299896, now seen corresponding path program 1 times [2023-12-22 03:17:08,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:08,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423743584] [2023-12-22 03:17:08,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:08,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:17:08,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:08,868 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 03:17:08,869 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 03:17:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:08,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:08,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:08,922 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 03:17:08,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:08,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:08,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423743584] [2023-12-22 03:17:08,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423743584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:08,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:08,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:08,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688895869] [2023-12-22 03:17:08,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:08,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:08,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:08,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:08,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:08,924 INFO L87 Difference]: Start difference. First operand 12292 states and 16002 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 03:17:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:09,165 INFO L93 Difference]: Finished difference Result 27912 states and 36228 transitions. [2023-12-22 03:17:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:09,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2023-12-22 03:17:09,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:09,183 INFO L225 Difference]: With dead ends: 27912 [2023-12-22 03:17:09,183 INFO L226 Difference]: Without dead ends: 15878 [2023-12-22 03:17:09,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 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 03:17:09,193 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 45 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:09,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 162 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:09,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15878 states. [2023-12-22 03:17:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15878 to 15876. [2023-12-22 03:17:09,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15876 states, 15875 states have (on average 1.2740787401574802) internal successors, (20226), 15875 states have internal predecessors, (20226), 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 03:17:09,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15876 states to 15876 states and 20226 transitions. [2023-12-22 03:17:09,555 INFO L78 Accepts]: Start accepts. Automaton has 15876 states and 20226 transitions. Word has length 25 [2023-12-22 03:17:09,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:09,555 INFO L495 AbstractCegarLoop]: Abstraction has 15876 states and 20226 transitions. [2023-12-22 03:17:09,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 03:17:09,556 INFO L276 IsEmpty]: Start isEmpty. Operand 15876 states and 20226 transitions. [2023-12-22 03:17:09,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-22 03:17:09,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:09,565 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] [2023-12-22 03:17:09,580 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 03:17:09,768 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 03:17:09,768 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:09,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:09,768 INFO L85 PathProgramCache]: Analyzing trace with hash 309782654, now seen corresponding path program 1 times [2023-12-22 03:17:09,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:09,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056091252] [2023-12-22 03:17:09,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:09,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:17:09,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:09,770 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 03:17:09,771 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 03:17:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:09,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:09,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:09,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:17:09,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:09,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:09,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056091252] [2023-12-22 03:17:09,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056091252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:09,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:09,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:09,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794055570] [2023-12-22 03:17:09,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:09,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:09,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:09,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:09,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:09,809 INFO L87 Difference]: Start difference. First operand 15876 states and 20226 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 03:17:10,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:10,125 INFO L93 Difference]: Finished difference Result 23816 states and 30212 transitions. [2023-12-22 03:17:10,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:10,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-12-22 03:17:10,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:10,142 INFO L225 Difference]: With dead ends: 23816 [2023-12-22 03:17:10,143 INFO L226 Difference]: Without dead ends: 16134 [2023-12-22 03:17:10,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 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 03:17:10,150 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 47 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:10,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 141 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:10,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16134 states. [2023-12-22 03:17:10,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16134 to 16132. [2023-12-22 03:17:10,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16132 states, 16131 states have (on average 1.2538590291984377) internal successors, (20226), 16131 states have internal predecessors, (20226), 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 03:17:10,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16132 states to 16132 states and 20226 transitions. [2023-12-22 03:17:10,609 INFO L78 Accepts]: Start accepts. Automaton has 16132 states and 20226 transitions. Word has length 26 [2023-12-22 03:17:10,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:10,609 INFO L495 AbstractCegarLoop]: Abstraction has 16132 states and 20226 transitions. [2023-12-22 03:17:10,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 03:17:10,609 INFO L276 IsEmpty]: Start isEmpty. Operand 16132 states and 20226 transitions. [2023-12-22 03:17:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-22 03:17:10,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:10,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:17:10,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-22 03:17:10,821 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 03:17:10,821 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:10,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:10,822 INFO L85 PathProgramCache]: Analyzing trace with hash -970081024, now seen corresponding path program 1 times [2023-12-22 03:17:10,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:10,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527062960] [2023-12-22 03:17:10,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:10,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:17:10,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:10,838 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:17:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:10,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:10,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:10,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-22 03:17:10,888 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 03:17:10,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:10,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:10,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527062960] [2023-12-22 03:17:10,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527062960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:10,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:10,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:10,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119786837] [2023-12-22 03:17:10,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:10,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:10,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:10,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:10,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:10,890 INFO L87 Difference]: Start difference. First operand 16132 states and 20226 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 03:17:11,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:11,273 INFO L93 Difference]: Finished difference Result 26632 states and 33540 transitions. [2023-12-22 03:17:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:11,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-12-22 03:17:11,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:11,299 INFO L225 Difference]: With dead ends: 26632 [2023-12-22 03:17:11,300 INFO L226 Difference]: Without dead ends: 26630 [2023-12-22 03:17:11,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 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 03:17:11,305 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 26 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:11,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 118 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:11,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26630 states. [2023-12-22 03:17:11,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26630 to 24580. [2023-12-22 03:17:11,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24580 states, 24579 states have (on average 1.2186826152406527) internal successors, (29954), 24579 states have internal predecessors, (29954), 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 03:17:11,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24580 states to 24580 states and 29954 transitions. [2023-12-22 03:17:11,769 INFO L78 Accepts]: Start accepts. Automaton has 24580 states and 29954 transitions. Word has length 26 [2023-12-22 03:17:11,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:11,769 INFO L495 AbstractCegarLoop]: Abstraction has 24580 states and 29954 transitions. [2023-12-22 03:17:11,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 03:17:11,769 INFO L276 IsEmpty]: Start isEmpty. Operand 24580 states and 29954 transitions. [2023-12-22 03:17:11,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-22 03:17:11,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:11,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:17:11,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-22 03:17:11,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:17:11,988 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:11,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:11,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1981198274, now seen corresponding path program 1 times [2023-12-22 03:17:11,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:11,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349290784] [2023-12-22 03:17:11,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:11,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:17:11,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:11,991 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:17:11,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-22 03:17:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:12,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:12,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:12,023 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 03:17:12,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:12,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:12,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349290784] [2023-12-22 03:17:12,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349290784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:12,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:12,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:12,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787288468] [2023-12-22 03:17:12,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:12,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:12,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:12,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:12,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:12,025 INFO L87 Difference]: Start difference. First operand 24580 states and 29954 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 03:17:12,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:12,630 INFO L93 Difference]: Finished difference Result 55304 states and 66820 transitions. [2023-12-22 03:17:12,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:12,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-12-22 03:17:12,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:12,660 INFO L225 Difference]: With dead ends: 55304 [2023-12-22 03:17:12,661 INFO L226 Difference]: Without dead ends: 31238 [2023-12-22 03:17:12,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 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 03:17:12,681 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 44 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:12,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 163 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:12,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31238 states. [2023-12-22 03:17:13,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31238 to 31236. [2023-12-22 03:17:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31236 states, 31235 states have (on average 1.180278533696174) internal successors, (36866), 31235 states have internal predecessors, (36866), 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 03:17:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31236 states to 31236 states and 36866 transitions. [2023-12-22 03:17:13,512 INFO L78 Accepts]: Start accepts. Automaton has 31236 states and 36866 transitions. Word has length 26 [2023-12-22 03:17:13,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:13,512 INFO L495 AbstractCegarLoop]: Abstraction has 31236 states and 36866 transitions. [2023-12-22 03:17:13,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 03:17:13,512 INFO L276 IsEmpty]: Start isEmpty. Operand 31236 states and 36866 transitions. [2023-12-22 03:17:13,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-22 03:17:13,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:13,527 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] [2023-12-22 03:17:13,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-12-22 03:17:13,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:17:13,729 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:13,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:13,729 INFO L85 PathProgramCache]: Analyzing trace with hash -7524579, now seen corresponding path program 1 times [2023-12-22 03:17:13,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:13,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246129576] [2023-12-22 03:17:13,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:13,730 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 03:17:13,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:13,731 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:17:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:13,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:13,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:13,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-22 03:17:13,776 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 03:17:13,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:13,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:13,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246129576] [2023-12-22 03:17:13,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246129576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:13,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:13,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:13,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594029349] [2023-12-22 03:17:13,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:13,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:13,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:13,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:13,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:13,778 INFO L87 Difference]: Start difference. First operand 31236 states and 36866 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 03:17:14,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:14,272 INFO L93 Difference]: Finished difference Result 46856 states and 55044 transitions. [2023-12-22 03:17:14,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:14,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2023-12-22 03:17:14,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:14,428 INFO L225 Difference]: With dead ends: 46856 [2023-12-22 03:17:14,428 INFO L226 Difference]: Without dead ends: 31750 [2023-12-22 03:17:14,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 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 03:17:14,438 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 46 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:14,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 137 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31750 states. [2023-12-22 03:17:14,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31750 to 31748. [2023-12-22 03:17:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31748 states, 31747 states have (on average 1.1612435820707467) internal successors, (36866), 31747 states have internal predecessors, (36866), 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 03:17:15,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31748 states to 31748 states and 36866 transitions. [2023-12-22 03:17:15,024 INFO L78 Accepts]: Start accepts. Automaton has 31748 states and 36866 transitions. Word has length 27 [2023-12-22 03:17:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:15,025 INFO L495 AbstractCegarLoop]: Abstraction has 31748 states and 36866 transitions. [2023-12-22 03:17:15,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 03:17:15,025 INFO L276 IsEmpty]: Start isEmpty. Operand 31748 states and 36866 transitions. [2023-12-22 03:17:15,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-22 03:17:15,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:15,037 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] [2023-12-22 03:17:15,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-12-22 03:17:15,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:17:15,239 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:15,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:15,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1287388257, now seen corresponding path program 1 times [2023-12-22 03:17:15,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:15,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637789934] [2023-12-22 03:17:15,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:15,240 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 03:17:15,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:15,241 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:17:15,241 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 (31)] Waiting until timeout for monitored process [2023-12-22 03:17:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:15,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:15,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:15,270 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 03:17:15,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:15,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:15,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637789934] [2023-12-22 03:17:15,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637789934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:15,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:15,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:15,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942655985] [2023-12-22 03:17:15,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:15,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:15,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:15,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:15,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:15,271 INFO L87 Difference]: Start difference. First operand 31748 states and 36866 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 03:17:16,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:16,096 INFO L93 Difference]: Finished difference Result 92166 states and 104451 transitions. [2023-12-22 03:17:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:16,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2023-12-22 03:17:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:16,128 INFO L225 Difference]: With dead ends: 92166 [2023-12-22 03:17:16,128 INFO L226 Difference]: Without dead ends: 31748 [2023-12-22 03:17:16,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 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 03:17:16,150 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 43 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:16,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 135 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:16,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31748 states. [2023-12-22 03:17:17,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31748 to 31748. [2023-12-22 03:17:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31748 states, 31747 states have (on average 1.0967335496267363) internal successors, (34818), 31747 states have internal predecessors, (34818), 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 03:17:17,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31748 states to 31748 states and 34818 transitions. [2023-12-22 03:17:17,092 INFO L78 Accepts]: Start accepts. Automaton has 31748 states and 34818 transitions. Word has length 27 [2023-12-22 03:17:17,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:17,092 INFO L495 AbstractCegarLoop]: Abstraction has 31748 states and 34818 transitions. [2023-12-22 03:17:17,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 03:17:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 31748 states and 34818 transitions. [2023-12-22 03:17:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-22 03:17:17,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:17:17,108 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] [2023-12-22 03:17:17,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-22 03:17:17,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:17:17,310 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:17:17,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:17:17,311 INFO L85 PathProgramCache]: Analyzing trace with hash -276271007, now seen corresponding path program 1 times [2023-12-22 03:17:17,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:17:17,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613456476] [2023-12-22 03:17:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:17:17,311 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 03:17:17,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:17:17,312 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:17:17,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-22 03:17:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:17:17,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:17:17,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:17:17,346 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 03:17:17,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:17:17,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:17:17,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613456476] [2023-12-22 03:17:17,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613456476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:17:17,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:17:17,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:17:17,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654033240] [2023-12-22 03:17:17,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:17:17,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:17:17,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:17:17,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:17:17,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:17:17,348 INFO L87 Difference]: Start difference. First operand 31748 states and 34818 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 03:17:17,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:17:17,990 INFO L93 Difference]: Finished difference Result 31748 states and 34818 transitions. [2023-12-22 03:17:17,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:17:17,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2023-12-22 03:17:17,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:17:17,990 INFO L225 Difference]: With dead ends: 31748 [2023-12-22 03:17:17,990 INFO L226 Difference]: Without dead ends: 0 [2023-12-22 03:17:17,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 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 03:17:17,997 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 20 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:17:17,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 75 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:17:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-22 03:17:17,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-22 03:17:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 03:17:17,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-22 03:17:17,998 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2023-12-22 03:17:17,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:17:17,998 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-22 03:17:17,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 03:17:17,998 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-22 03:17:17,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-22 03:17:18,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 03:17:18,002 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 (32)] Forceful destruction successful, exit code 0 [2023-12-22 03:17:18,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:17:18,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-22 03:17:18,213 INFO L899 garLoopResultBuilder]: For program point L159-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,213 INFO L899 garLoopResultBuilder]: For program point L93-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,213 INFO L899 garLoopResultBuilder]: For program point L85-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,213 INFO L899 garLoopResultBuilder]: For program point L77-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,213 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 6 179) no Hoare annotation was computed. [2023-12-22 03:17:18,213 INFO L899 garLoopResultBuilder]: For program point L135(line 135) no Hoare annotation was computed. [2023-12-22 03:17:18,213 INFO L899 garLoopResultBuilder]: For program point L160(line 160) no Hoare annotation was computed. [2023-12-22 03:17:18,213 INFO L899 garLoopResultBuilder]: For program point L119-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,213 INFO L899 garLoopResultBuilder]: For program point L144-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L902 garLoopResultBuilder]: At program point L169-1(lines 44 174) the Hoare annotation is: true [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L120(line 120) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L145(line 145) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L46(lines 46 48) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L129-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L154-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L113-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L105-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L130(line 130) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L97-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L89-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L81-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L139-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L73(lines 73 75) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L73-2(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L164-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2023-12-22 03:17:18,214 INFO L899 garLoopResultBuilder]: For program point L165(line 165) no Hoare annotation was computed. [2023-12-22 03:17:18,215 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-22 03:17:18,215 INFO L899 garLoopResultBuilder]: For program point L124-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,215 INFO L899 garLoopResultBuilder]: For program point L149-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,215 INFO L899 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2023-12-22 03:17:18,215 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 7 179) no Hoare annotation was computed. [2023-12-22 03:17:18,215 INFO L899 garLoopResultBuilder]: For program point L150(line 150) no Hoare annotation was computed. [2023-12-22 03:17:18,215 INFO L899 garLoopResultBuilder]: For program point L175(lines 7 179) no Hoare annotation was computed. [2023-12-22 03:17:18,215 INFO L899 garLoopResultBuilder]: For program point L109-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,215 INFO L899 garLoopResultBuilder]: For program point L134-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,215 INFO L899 garLoopResultBuilder]: For program point L101-1(lines 44 174) no Hoare annotation was computed. [2023-12-22 03:17:18,217 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, 1, 1, 1, 1, 1] [2023-12-22 03:17:18,218 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 03:17:18,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:17:18 BoogieIcfgContainer [2023-12-22 03:17:18,223 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 03:17:18,224 INFO L158 Benchmark]: Toolchain (without parser) took 19367.36ms. Allocated memory was 189.8MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 149.9MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 587.6MB. Max. memory is 8.0GB. [2023-12-22 03:17:18,224 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 03:17:18,224 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.24ms. Allocated memory is still 189.8MB. Free memory was 149.9MB in the beginning and 137.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-22 03:17:18,224 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.66ms. Allocated memory is still 189.8MB. Free memory was 137.7MB in the beginning and 135.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-22 03:17:18,224 INFO L158 Benchmark]: Boogie Preprocessor took 39.20ms. Allocated memory is still 189.8MB. Free memory was 135.9MB in the beginning and 133.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-22 03:17:18,224 INFO L158 Benchmark]: RCFGBuilder took 399.99ms. Allocated memory is still 189.8MB. Free memory was 133.8MB in the beginning and 117.7MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-22 03:17:18,224 INFO L158 Benchmark]: TraceAbstraction took 18705.69ms. Allocated memory was 189.8MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 117.1MB in the beginning and 2.8GB in the end (delta: -2.7GB). Peak memory consumption was 555.1MB. Max. memory is 8.0GB. [2023-12-22 03:17:18,225 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 193.24ms. Allocated memory is still 189.8MB. Free memory was 149.9MB in the beginning and 137.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.66ms. Allocated memory is still 189.8MB. Free memory was 137.7MB in the beginning and 135.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.20ms. Allocated memory is still 189.8MB. Free memory was 135.9MB in the beginning and 133.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 399.99ms. Allocated memory is still 189.8MB. Free memory was 133.8MB in the beginning and 117.7MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 18705.69ms. Allocated memory was 189.8MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 117.1MB in the beginning and 2.8GB in the end (delta: -2.7GB). Peak memory consumption was 555.1MB. 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 - PositiveResult [Line: 177]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.6s, OverallIterations: 31, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1398 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1398 mSDsluCounter, 4489 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1802 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 198 IncrementalHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 2687 mSDtfsCounter, 198 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 658 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31748occurred in iteration=29, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.1s AutomataMinimizationTime, 31 MinimizatonAttempts, 6176 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2050 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 689 NumberOfCodeBlocks, 689 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 658 ConstructedInterpolants, 0 QuantifiedInterpolants, 1461 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1513 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-12-22 03:17:18,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...