/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/loop-invgen/down.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 22:39:04,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 22:39:04,558 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 22:39:04,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 22:39:04,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 22:39:04,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 22:39:04,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 22:39:04,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 22:39:04,577 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 22:39:04,578 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 22:39:04,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 22:39:04,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 22:39:04,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 22:39:04,579 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 22:39:04,579 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 22:39:04,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 22:39:04,579 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 22:39:04,580 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 22:39:04,580 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 22:39:04,580 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 22:39:04,580 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 22:39:04,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 22:39:04,581 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 22:39:04,581 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 22:39:04,581 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 22:39:04,581 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 22:39:04,582 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 22:39:04,582 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 22:39:04,582 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 22:39:04,582 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 22:39:04,583 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 22:39:04,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 22:39:04,583 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 22:39:04,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 22:39:04,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:39:04,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 22:39:04,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 22:39:04,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 22:39:04,584 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 22:39:04,584 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 22:39:04,585 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 22:39:04,585 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 22:39:04,585 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 22:39:04,585 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 22:39:04,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 22:39:04,586 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 22:39:04,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 22:39:04,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 22:39:04,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 22:39:04,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 22:39:04,770 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 22:39:04,779 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 22:39:04,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/down.i [2023-12-24 22:39:05,718 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 22:39:05,864 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 22:39:05,864 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/down.i [2023-12-24 22:39:05,869 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ebf64a10/f5877e24ffc443f2a85871aa41742505/FLAG4a2814415 [2023-12-24 22:39:05,881 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ebf64a10/f5877e24ffc443f2a85871aa41742505 [2023-12-24 22:39:05,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 22:39:05,884 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 22:39:05,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 22:39:05,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 22:39:05,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 22:39:05,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:39:05" (1/1) ... [2023-12-24 22:39:05,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0436ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:39:05, skipping insertion in model container [2023-12-24 22:39:05,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:39:05" (1/1) ... [2023-12-24 22:39:05,909 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 22:39:06,054 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/down.i[893,906] [2023-12-24 22:39:06,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:39:06,076 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 22:39:06,091 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/down.i[893,906] [2023-12-24 22:39:06,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:39:06,113 INFO L206 MainTranslator]: Completed translation [2023-12-24 22:39:06,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:39:06 WrapperNode [2023-12-24 22:39:06,114 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 22:39:06,115 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 22:39:06,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 22:39:06,115 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 22:39:06,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:39:06" (1/1) ... [2023-12-24 22:39:06,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:39:06" (1/1) ... [2023-12-24 22:39:06,134 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2023-12-24 22:39:06,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 22:39:06,135 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 22:39:06,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 22:39:06,135 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 22:39:06,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:39:06" (1/1) ... [2023-12-24 22:39:06,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:39:06" (1/1) ... [2023-12-24 22:39:06,143 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:39:06" (1/1) ... [2023-12-24 22:39:06,150 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]. [2023-12-24 22:39:06,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:39:06" (1/1) ... [2023-12-24 22:39:06,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:39:06" (1/1) ... [2023-12-24 22:39:06,153 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:39:06" (1/1) ... [2023-12-24 22:39:06,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:39:06" (1/1) ... [2023-12-24 22:39:06,156 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:39:06" (1/1) ... [2023-12-24 22:39:06,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:39:06" (1/1) ... [2023-12-24 22:39:06,157 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 22:39:06,158 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 22:39:06,158 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 22:39:06,158 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 22:39:06,158 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:39:06" (1/1) ... [2023-12-24 22:39:06,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:39:06,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 22:39:06,186 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) [2023-12-24 22:39:06,207 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 [2023-12-24 22:39:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 22:39:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 22:39:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 22:39:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 22:39:06,291 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 22:39:06,293 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 22:39:06,434 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 22:39:06,454 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 22:39:06,454 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-24 22:39:06,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:39:06 BoogieIcfgContainer [2023-12-24 22:39:06,455 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 22:39:06,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 22:39:06,456 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 22:39:06,458 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 22:39:06,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 10:39:05" (1/3) ... [2023-12-24 22:39:06,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b64ed46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:39:06, skipping insertion in model container [2023-12-24 22:39:06,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:39:06" (2/3) ... [2023-12-24 22:39:06,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b64ed46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:39:06, skipping insertion in model container [2023-12-24 22:39:06,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:39:06" (3/3) ... [2023-12-24 22:39:06,460 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i [2023-12-24 22:39:06,471 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 22:39:06,471 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 22:39:06,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 22:39:06,509 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;@30023dd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 22:39:06,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 22:39:06,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 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) [2023-12-24 22:39:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-24 22:39:06,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:39:06,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-24 22:39:06,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:39:06,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:39:06,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2138998487, now seen corresponding path program 1 times [2023-12-24 22:39:06,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:39:06,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99847118] [2023-12-24 22:39:06,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:39:06,530 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 [2023-12-24 22:39:06,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:39:06,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:39:06,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 22:39:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:39:06,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 22:39:06,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:39:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:06,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:39:06,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:39:06,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99847118] [2023-12-24 22:39:06,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99847118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:39:06,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:39:06,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 22:39:06,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379676516] [2023-12-24 22:39:06,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:39:06,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 22:39:06,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:39:06,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 22:39:06,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 22:39:06,640 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 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 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-12-24 22:39:06,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:39:06,695 INFO L93 Difference]: Finished difference Result 22 states and 32 transitions. [2023-12-24 22:39:06,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 22:39:06,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2023-12-24 22:39:06,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:39:06,702 INFO L225 Difference]: With dead ends: 22 [2023-12-24 22:39:06,702 INFO L226 Difference]: Without dead ends: 9 [2023-12-24 22:39:06,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 22:39:06,706 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:39:06,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:39:06,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-24 22:39:06,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-12-24 22:39:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2023-12-24 22:39:06,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-12-24 22:39:06,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-12-24 22:39:06,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:39:06,725 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-12-24 22:39:06,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-12-24 22:39:06,726 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-12-24 22:39:06,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-24 22:39:06,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:39:06,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:39:06,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 22:39:06,928 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 [2023-12-24 22:39:06,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:39:06,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:39:06,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1832997516, now seen corresponding path program 1 times [2023-12-24 22:39:06,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:39:06,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338216371] [2023-12-24 22:39:06,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:39:06,930 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 [2023-12-24 22:39:06,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:39:06,931 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:39:06,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 22:39:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:39:06,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 22:39:06,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:39:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:06,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:39:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:07,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:39:07,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338216371] [2023-12-24 22:39:07,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338216371] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:39:07,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:39:07,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-24 22:39:07,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008897192] [2023-12-24 22:39:07,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:39:07,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 22:39:07,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:39:07,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 22:39:07,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 22:39:07,040 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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) [2023-12-24 22:39:07,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:39:07,167 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2023-12-24 22:39:07,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 22:39:07,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 7 [2023-12-24 22:39:07,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:39:07,169 INFO L225 Difference]: With dead ends: 36 [2023-12-24 22:39:07,169 INFO L226 Difference]: Without dead ends: 34 [2023-12-24 22:39:07,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-24 22:39:07,172 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 24 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:39:07,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 28 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:39:07,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-24 22:39:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 15. [2023-12-24 22:39:07,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 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) [2023-12-24 22:39:07,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2023-12-24 22:39:07,183 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 7 [2023-12-24 22:39:07,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:39:07,183 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2023-12-24 22:39:07,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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) [2023-12-24 22:39:07,184 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2023-12-24 22:39:07,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-24 22:39:07,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:39:07,184 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:39:07,187 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 [2023-12-24 22:39:07,386 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 [2023-12-24 22:39:07,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:39:07,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:39:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash -609977531, now seen corresponding path program 1 times [2023-12-24 22:39:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:39:07,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755407202] [2023-12-24 22:39:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:39:07,389 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 [2023-12-24 22:39:07,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:39:07,390 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) [2023-12-24 22:39:07,391 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 [2023-12-24 22:39:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:39:07,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 22:39:07,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:39:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:07,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:39:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:07,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:39:07,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755407202] [2023-12-24 22:39:07,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755407202] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:39:07,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:39:07,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-24 22:39:07,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593312853] [2023-12-24 22:39:07,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:39:07,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 22:39:07,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:39:07,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 22:39:07,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 22:39:07,650 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 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) [2023-12-24 22:39:07,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:39:07,747 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2023-12-24 22:39:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 22:39:07,748 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 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 10 [2023-12-24 22:39:07,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:39:07,749 INFO L225 Difference]: With dead ends: 25 [2023-12-24 22:39:07,749 INFO L226 Difference]: Without dead ends: 15 [2023-12-24 22:39:07,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-12-24 22:39:07,750 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:39:07,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 25 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:39:07,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-24 22:39:07,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-24 22:39:07,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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) [2023-12-24 22:39:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2023-12-24 22:39:07,753 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2023-12-24 22:39:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:39:07,753 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2023-12-24 22:39:07,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 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) [2023-12-24 22:39:07,753 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2023-12-24 22:39:07,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-24 22:39:07,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:39:07,754 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-12-24 22:39:07,760 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 [2023-12-24 22:39:07,960 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 [2023-12-24 22:39:07,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:39:07,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:39:07,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1068387351, now seen corresponding path program 2 times [2023-12-24 22:39:07,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:39:07,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898869990] [2023-12-24 22:39:07,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:39:07,962 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 [2023-12-24 22:39:07,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:39:07,963 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) [2023-12-24 22:39:07,966 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 [2023-12-24 22:39:07,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:39:07,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:39:07,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 22:39:07,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:39:08,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:08,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:39:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:08,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:39:08,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898869990] [2023-12-24 22:39:08,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898869990] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:39:08,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:39:08,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-24 22:39:08,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959288272] [2023-12-24 22:39:08,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:39:08,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 22:39:08,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:39:08,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 22:39:08,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-24 22:39:08,149 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 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) [2023-12-24 22:39:08,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:39:08,918 INFO L93 Difference]: Finished difference Result 114 states and 131 transitions. [2023-12-24 22:39:08,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-24 22:39:08,918 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 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 10 [2023-12-24 22:39:08,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:39:08,919 INFO L225 Difference]: With dead ends: 114 [2023-12-24 22:39:08,919 INFO L226 Difference]: Without dead ends: 112 [2023-12-24 22:39:08,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=510, Invalid=1382, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 22:39:08,921 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 195 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:39:08,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 95 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 22:39:08,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-24 22:39:08,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 33. [2023-12-24 22:39:08,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 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) [2023-12-24 22:39:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2023-12-24 22:39:08,928 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 10 [2023-12-24 22:39:08,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:39:08,928 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2023-12-24 22:39:08,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 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) [2023-12-24 22:39:08,928 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2023-12-24 22:39:08,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-24 22:39:08,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:39:08,929 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-24 22:39:08,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 22:39:09,131 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 [2023-12-24 22:39:09,131 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:39:09,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:39:09,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1788411607, now seen corresponding path program 2 times [2023-12-24 22:39:09,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:39:09,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646525612] [2023-12-24 22:39:09,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:39:09,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:39:09,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:39:09,133 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) [2023-12-24 22:39:09,136 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 [2023-12-24 22:39:09,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:39:09,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:39:09,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 22:39:09,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:39:09,299 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:09,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:39:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:09,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:39:09,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646525612] [2023-12-24 22:39:09,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646525612] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:39:09,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:39:09,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-24 22:39:09,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119036869] [2023-12-24 22:39:09,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:39:09,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 22:39:09,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:39:09,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 22:39:09,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-12-24 22:39:09,631 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 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) [2023-12-24 22:39:09,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:39:09,837 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2023-12-24 22:39:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 22:39:09,838 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 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 14 [2023-12-24 22:39:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:39:09,838 INFO L225 Difference]: With dead ends: 45 [2023-12-24 22:39:09,838 INFO L226 Difference]: Without dead ends: 32 [2023-12-24 22:39:09,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2023-12-24 22:39:09,839 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:39:09,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 51 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:39:09,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-24 22:39:09,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-24 22:39:09,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 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) [2023-12-24 22:39:09,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2023-12-24 22:39:09,843 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 14 [2023-12-24 22:39:09,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:39:09,843 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2023-12-24 22:39:09,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 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) [2023-12-24 22:39:09,843 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2023-12-24 22:39:09,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-24 22:39:09,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:39:09,844 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:39:09,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 22:39:10,045 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 [2023-12-24 22:39:10,046 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:39:10,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:39:10,046 INFO L85 PathProgramCache]: Analyzing trace with hash -279357947, now seen corresponding path program 3 times [2023-12-24 22:39:10,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:39:10,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58214234] [2023-12-24 22:39:10,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:39:10,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:39:10,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:39:10,048 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) [2023-12-24 22:39:10,048 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 [2023-12-24 22:39:10,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-24 22:39:10,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:39:10,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 22:39:10,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:39:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:10,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:39:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:10,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:39:10,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58214234] [2023-12-24 22:39:10,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58214234] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:39:10,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:39:10,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2023-12-24 22:39:10,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145230389] [2023-12-24 22:39:10,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:39:10,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 22:39:10,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:39:10,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 22:39:10,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2023-12-24 22:39:10,383 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 20 states, 20 states have (on average 1.35) internal successors, (27), 19 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) [2023-12-24 22:39:11,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:39:11,703 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2023-12-24 22:39:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-24 22:39:11,703 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.35) internal successors, (27), 19 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 14 [2023-12-24 22:39:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:39:11,704 INFO L225 Difference]: With dead ends: 117 [2023-12-24 22:39:11,704 INFO L226 Difference]: Without dead ends: 112 [2023-12-24 22:39:11,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=716, Invalid=1834, Unknown=0, NotChecked=0, Total=2550 [2023-12-24 22:39:11,705 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 241 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:39:11,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 95 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 22:39:11,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-24 22:39:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 51. [2023-12-24 22:39:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.28) internal successors, (64), 50 states have internal predecessors, (64), 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) [2023-12-24 22:39:11,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2023-12-24 22:39:11,712 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 14 [2023-12-24 22:39:11,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:39:11,712 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2023-12-24 22:39:11,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.35) internal successors, (27), 19 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) [2023-12-24 22:39:11,712 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2023-12-24 22:39:11,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-24 22:39:11,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:39:11,713 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-12-24 22:39:11,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 22:39:11,915 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 [2023-12-24 22:39:11,915 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:39:11,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:39:11,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1321056265, now seen corresponding path program 3 times [2023-12-24 22:39:11,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:39:11,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042468889] [2023-12-24 22:39:11,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:39:11,916 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 [2023-12-24 22:39:11,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:39:11,917 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) [2023-12-24 22:39:11,917 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 [2023-12-24 22:39:11,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-24 22:39:11,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:39:11,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 22:39:11,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:39:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:12,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:39:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:12,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:39:12,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042468889] [2023-12-24 22:39:12,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042468889] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:39:12,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:39:12,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-24 22:39:12,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031411978] [2023-12-24 22:39:12,318 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:39:12,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 22:39:12,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:39:12,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 22:39:12,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-12-24 22:39:12,319 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 26 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 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) [2023-12-24 22:39:20,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:39:20,898 INFO L93 Difference]: Finished difference Result 427 states and 466 transitions. [2023-12-24 22:39:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2023-12-24 22:39:20,899 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 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 16 [2023-12-24 22:39:20,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:39:20,901 INFO L225 Difference]: With dead ends: 427 [2023-12-24 22:39:20,901 INFO L226 Difference]: Without dead ends: 425 [2023-12-24 22:39:20,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9802 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=5439, Invalid=19367, Unknown=0, NotChecked=0, Total=24806 [2023-12-24 22:39:20,908 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1355 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 22:39:20,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 275 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 22:39:20,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-24 22:39:20,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 86. [2023-12-24 22:39:20,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 85 states have internal predecessors, (106), 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) [2023-12-24 22:39:20,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2023-12-24 22:39:20,919 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 16 [2023-12-24 22:39:20,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:39:20,919 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2023-12-24 22:39:20,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 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) [2023-12-24 22:39:20,919 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2023-12-24 22:39:20,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-24 22:39:20,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:39:20,920 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2023-12-24 22:39:20,922 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 [2023-12-24 22:39:21,122 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 [2023-12-24 22:39:21,123 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:39:21,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:39:21,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1974514107, now seen corresponding path program 4 times [2023-12-24 22:39:21,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:39:21,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499760287] [2023-12-24 22:39:21,123 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:39:21,123 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 [2023-12-24 22:39:21,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:39:21,124 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) [2023-12-24 22:39:21,125 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 [2023-12-24 22:39:21,149 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:39:21,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:39:21,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 22:39:21,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:39:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:21,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:39:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:21,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:39:21,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499760287] [2023-12-24 22:39:21,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499760287] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:39:21,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:39:21,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-24 22:39:21,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590513774] [2023-12-24 22:39:21,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:39:21,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 22:39:21,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:39:21,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 22:39:21,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-12-24 22:39:21,848 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 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) [2023-12-24 22:39:22,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:39:22,098 INFO L93 Difference]: Finished difference Result 99 states and 118 transitions. [2023-12-24 22:39:22,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 22:39:22,098 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 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 [2023-12-24 22:39:22,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:39:22,098 INFO L225 Difference]: With dead ends: 99 [2023-12-24 22:39:22,098 INFO L226 Difference]: Without dead ends: 85 [2023-12-24 22:39:22,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2023-12-24 22:39:22,099 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:39:22,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 58 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:39:22,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-24 22:39:22,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-12-24 22:39:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2380952380952381) internal successors, (104), 84 states have internal predecessors, (104), 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) [2023-12-24 22:39:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2023-12-24 22:39:22,109 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 18 [2023-12-24 22:39:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:39:22,109 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2023-12-24 22:39:22,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 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) [2023-12-24 22:39:22,109 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2023-12-24 22:39:22,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-24 22:39:22,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:39:22,110 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-12-24 22:39:22,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 22:39:22,313 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 [2023-12-24 22:39:22,313 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:39:22,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:39:22,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2044778199, now seen corresponding path program 5 times [2023-12-24 22:39:22,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:39:22,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083916654] [2023-12-24 22:39:22,314 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:39:22,314 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 [2023-12-24 22:39:22,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:39:22,315 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) [2023-12-24 22:39:22,316 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 [2023-12-24 22:39:22,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-24 22:39:22,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:39:22,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 22:39:22,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:39:22,646 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:22,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:39:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:23,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:39:23,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083916654] [2023-12-24 22:39:23,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083916654] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:39:23,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:39:23,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 30 [2023-12-24 22:39:23,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917789147] [2023-12-24 22:39:23,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:39:23,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-24 22:39:23,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:39:23,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-24 22:39:23,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=756, Unknown=0, NotChecked=0, Total=930 [2023-12-24 22:39:23,344 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 30 states have internal predecessors, (42), 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) [2023-12-24 22:39:23,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:39:23,687 INFO L93 Difference]: Finished difference Result 101 states and 119 transitions. [2023-12-24 22:39:23,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 22:39:23,687 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 30 states have internal predecessors, (42), 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 [2023-12-24 22:39:23,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:39:23,687 INFO L225 Difference]: With dead ends: 101 [2023-12-24 22:39:23,687 INFO L226 Difference]: Without dead ends: 84 [2023-12-24 22:39:23,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 22:39:23,688 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:39:23,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 71 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:39:23,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-24 22:39:23,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-24 22:39:23,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.2289156626506024) internal successors, (102), 83 states have internal predecessors, (102), 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) [2023-12-24 22:39:23,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2023-12-24 22:39:23,694 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 22 [2023-12-24 22:39:23,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:39:23,694 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2023-12-24 22:39:23,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 30 states have internal predecessors, (42), 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) [2023-12-24 22:39:23,695 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2023-12-24 22:39:23,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-24 22:39:23,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:39:23,695 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 2, 2, 1, 1, 1, 1, 1] [2023-12-24 22:39:23,698 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 [2023-12-24 22:39:23,898 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 [2023-12-24 22:39:23,898 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:39:23,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:39:23,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1851249908, now seen corresponding path program 6 times [2023-12-24 22:39:23,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:39:23,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794042890] [2023-12-24 22:39:23,899 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:39:23,899 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 [2023-12-24 22:39:23,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:39:23,899 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) [2023-12-24 22:39:23,901 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 [2023-12-24 22:39:23,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-24 22:39:23,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:39:23,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 22:39:23,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:39:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:24,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:39:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:24,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:39:24,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794042890] [2023-12-24 22:39:24,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794042890] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:39:24,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:39:24,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2023-12-24 22:39:24,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171749315] [2023-12-24 22:39:24,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:39:24,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-24 22:39:24,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:39:24,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-24 22:39:24,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2023-12-24 22:39:24,676 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand has 32 states, 32 states have (on average 1.40625) internal successors, (45), 31 states have internal predecessors, (45), 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) [2023-12-24 22:39:30,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:39:30,454 INFO L93 Difference]: Finished difference Result 241 states and 274 transitions. [2023-12-24 22:39:30,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-12-24 22:39:30,455 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.40625) internal successors, (45), 31 states have internal predecessors, (45), 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 [2023-12-24 22:39:30,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:39:30,455 INFO L225 Difference]: With dead ends: 241 [2023-12-24 22:39:30,455 INFO L226 Difference]: Without dead ends: 236 [2023-12-24 22:39:30,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3201 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2786, Invalid=7516, Unknown=0, NotChecked=0, Total=10302 [2023-12-24 22:39:30,458 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 590 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:39:30,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 286 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 22:39:30,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-24 22:39:30,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 94. [2023-12-24 22:39:30,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.2795698924731183) internal successors, (119), 93 states have internal predecessors, (119), 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) [2023-12-24 22:39:30,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 119 transitions. [2023-12-24 22:39:30,467 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 119 transitions. Word has length 23 [2023-12-24 22:39:30,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:39:30,467 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 119 transitions. [2023-12-24 22:39:30,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.40625) internal successors, (45), 31 states have internal predecessors, (45), 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) [2023-12-24 22:39:30,467 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 119 transitions. [2023-12-24 22:39:30,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-24 22:39:30,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:39:30,468 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1] [2023-12-24 22:39:30,472 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 [2023-12-24 22:39:30,670 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 [2023-12-24 22:39:30,670 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:39:30,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:39:30,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1662550341, now seen corresponding path program 7 times [2023-12-24 22:39:30,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:39:30,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224142626] [2023-12-24 22:39:30,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:39:30,671 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 [2023-12-24 22:39:30,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:39:30,673 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) [2023-12-24 22:39:30,673 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 [2023-12-24 22:39:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:39:30,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 22:39:30,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:39:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:30,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:39:32,153 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 35 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:32,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:39:32,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224142626] [2023-12-24 22:39:32,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224142626] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:39:32,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:39:32,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18] total 31 [2023-12-24 22:39:32,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654156551] [2023-12-24 22:39:32,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:39:32,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-24 22:39:32,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:39:32,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-24 22:39:32,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2023-12-24 22:39:32,155 INFO L87 Difference]: Start difference. First operand 94 states and 119 transitions. Second operand has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 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) [2023-12-24 22:39:32,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:39:32,704 INFO L93 Difference]: Finished difference Result 113 states and 137 transitions. [2023-12-24 22:39:32,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 22:39:32,704 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 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 [2023-12-24 22:39:32,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:39:32,704 INFO L225 Difference]: With dead ends: 113 [2023-12-24 22:39:32,704 INFO L226 Difference]: Without dead ends: 93 [2023-12-24 22:39:32,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=291, Invalid=1269, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 22:39:32,705 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 57 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:39:32,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 91 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 22:39:32,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-24 22:39:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-12-24 22:39:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.2717391304347827) internal successors, (117), 92 states have internal predecessors, (117), 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) [2023-12-24 22:39:32,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 117 transitions. [2023-12-24 22:39:32,715 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 117 transitions. Word has length 26 [2023-12-24 22:39:32,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:39:32,715 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 117 transitions. [2023-12-24 22:39:32,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 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) [2023-12-24 22:39:32,716 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 117 transitions. [2023-12-24 22:39:32,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-24 22:39:32,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:39:32,716 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1] [2023-12-24 22:39:32,719 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 [2023-12-24 22:39:32,918 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 [2023-12-24 22:39:32,919 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:39:32,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:39:32,919 INFO L85 PathProgramCache]: Analyzing trace with hash 332088464, now seen corresponding path program 8 times [2023-12-24 22:39:32,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:39:32,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756613371] [2023-12-24 22:39:32,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:39:32,920 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 [2023-12-24 22:39:32,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:39:32,920 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) [2023-12-24 22:39:32,924 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 [2023-12-24 22:39:32,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:39:32,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:39:32,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 22:39:32,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:39:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:33,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:39:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:33,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:39:33,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756613371] [2023-12-24 22:39:33,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756613371] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:39:33,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:39:33,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-12-24 22:39:33,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377220957] [2023-12-24 22:39:33,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:39:33,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-24 22:39:33,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:39:33,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-24 22:39:33,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2023-12-24 22:39:33,458 INFO L87 Difference]: Start difference. First operand 93 states and 117 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 states have internal predecessors, (53), 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) [2023-12-24 22:39:49,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:39:49,784 INFO L93 Difference]: Finished difference Result 503 states and 543 transitions. [2023-12-24 22:39:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2023-12-24 22:39:49,785 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 states have internal predecessors, (53), 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 [2023-12-24 22:39:49,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:39:49,786 INFO L225 Difference]: With dead ends: 503 [2023-12-24 22:39:49,786 INFO L226 Difference]: Without dead ends: 501 [2023-12-24 22:39:49,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18493 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=9058, Invalid=35674, Unknown=0, NotChecked=0, Total=44732 [2023-12-24 22:39:49,793 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1589 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 22:39:49,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 322 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 22:39:49,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-12-24 22:39:49,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 121. [2023-12-24 22:39:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.2083333333333333) internal successors, (145), 120 states have internal predecessors, (145), 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) [2023-12-24 22:39:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 145 transitions. [2023-12-24 22:39:49,808 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 145 transitions. Word has length 27 [2023-12-24 22:39:49,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:39:49,808 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 145 transitions. [2023-12-24 22:39:49,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 states have internal predecessors, (53), 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) [2023-12-24 22:39:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 145 transitions. [2023-12-24 22:39:49,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-24 22:39:49,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:39:49,809 INFO L195 NwaCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1] [2023-12-24 22:39:49,816 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 (13)] Ended with exit code 0 [2023-12-24 22:39:50,012 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 [2023-12-24 22:39:50,012 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:39:50,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:39:50,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1595207084, now seen corresponding path program 4 times [2023-12-24 22:39:50,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:39:50,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496640179] [2023-12-24 22:39:50,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:39:50,013 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 [2023-12-24 22:39:50,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:39:50,014 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) [2023-12-24 22:39:50,014 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 [2023-12-24 22:39:50,073 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:39:50,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:39:50,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 22:39:50,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:39:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:50,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:39:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:39:51,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:39:51,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496640179] [2023-12-24 22:39:51,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496640179] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:39:51,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:39:51,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2023-12-24 22:39:51,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471045194] [2023-12-24 22:39:51,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:39:51,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-24 22:39:51,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:39:51,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-24 22:39:51,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 22:39:51,453 INFO L87 Difference]: Start difference. First operand 121 states and 145 transitions. Second operand has 52 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 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) [2023-12-24 22:43:09,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:09,481 INFO L93 Difference]: Finished difference Result 1813 states and 1899 transitions. [2023-12-24 22:43:09,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 651 states. [2023-12-24 22:43:09,481 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 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 29 [2023-12-24 22:43:09,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:09,486 INFO L225 Difference]: With dead ends: 1813 [2023-12-24 22:43:09,486 INFO L226 Difference]: Without dead ends: 1811 [2023-12-24 22:43:09,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 650 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200529 ImplicationChecksByTransitivity, 194.2s TimeCoverageRelationStatistics Valid=75275, Invalid=349177, Unknown=0, NotChecked=0, Total=424452 [2023-12-24 22:43:09,507 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 11288 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 2481 mSolverCounterSat, 2943 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11288 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 5424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2943 IncrementalHoareTripleChecker+Valid, 2481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:09,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11288 Valid, 1134 Invalid, 5424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2943 Valid, 2481 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-24 22:43:09,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2023-12-24 22:43:09,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 185. [2023-12-24 22:43:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.2445652173913044) internal successors, (229), 184 states have internal predecessors, (229), 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) [2023-12-24 22:43:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 229 transitions. [2023-12-24 22:43:09,547 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 229 transitions. Word has length 29 [2023-12-24 22:43:09,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:09,548 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 229 transitions. [2023-12-24 22:43:09,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 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) [2023-12-24 22:43:09,548 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 229 transitions. [2023-12-24 22:43:09,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-24 22:43:09,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:09,548 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1] [2023-12-24 22:43:09,552 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 [2023-12-24 22:43:09,750 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 [2023-12-24 22:43:09,750 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:09,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:09,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1080954583, now seen corresponding path program 9 times [2023-12-24 22:43:09,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:09,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751577546] [2023-12-24 22:43:09,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:43:09,751 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 [2023-12-24 22:43:09,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:09,752 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) [2023-12-24 22:43:09,753 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 [2023-12-24 22:43:09,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-24 22:43:09,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:43:09,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 22:43:09,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:10,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:43:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 24 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:11,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:11,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751577546] [2023-12-24 22:43:11,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751577546] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:43:11,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:43:11,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 34 [2023-12-24 22:43:11,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741460956] [2023-12-24 22:43:11,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:43:11,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-24 22:43:11,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:11,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-24 22:43:11,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1028, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 22:43:11,474 INFO L87 Difference]: Start difference. First operand 185 states and 229 transitions. Second operand has 35 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 34 states have internal predecessors, (58), 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) [2023-12-24 22:43:11,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:11,998 INFO L93 Difference]: Finished difference Result 207 states and 250 transitions. [2023-12-24 22:43:11,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 22:43:11,998 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 34 states have internal predecessors, (58), 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 30 [2023-12-24 22:43:11,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:11,998 INFO L225 Difference]: With dead ends: 207 [2023-12-24 22:43:11,998 INFO L226 Difference]: Without dead ends: 184 [2023-12-24 22:43:11,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=301, Invalid=1505, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 22:43:11,999 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 87 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:11,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 124 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 22:43:11,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-24 22:43:12,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-12-24 22:43:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.2404371584699454) internal successors, (227), 183 states have internal predecessors, (227), 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) [2023-12-24 22:43:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 227 transitions. [2023-12-24 22:43:12,033 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 227 transitions. Word has length 30 [2023-12-24 22:43:12,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:12,033 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 227 transitions. [2023-12-24 22:43:12,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 34 states have internal predecessors, (58), 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) [2023-12-24 22:43:12,033 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 227 transitions. [2023-12-24 22:43:12,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-24 22:43:12,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:12,034 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2023-12-24 22:43:12,037 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 [2023-12-24 22:43:12,236 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 [2023-12-24 22:43:12,236 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:12,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1424485307, now seen corresponding path program 10 times [2023-12-24 22:43:12,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:12,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850047375] [2023-12-24 22:43:12,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:43:12,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:43:12,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:12,238 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) [2023-12-24 22:43:12,253 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 [2023-12-24 22:43:12,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:43:12,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:43:12,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 22:43:12,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 7 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:12,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:43:14,703 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 70 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:14,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:14,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850047375] [2023-12-24 22:43:14,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850047375] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:43:14,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:43:14,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24] total 41 [2023-12-24 22:43:14,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585475121] [2023-12-24 22:43:14,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:43:14,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-24 22:43:14,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:14,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-24 22:43:14,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1465, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 22:43:14,705 INFO L87 Difference]: Start difference. First operand 184 states and 227 transitions. Second operand has 42 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 41 states have internal predecessors, (66), 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) [2023-12-24 22:43:15,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:15,637 INFO L93 Difference]: Finished difference Result 209 states and 251 transitions. [2023-12-24 22:43:15,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 22:43:15,637 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 41 states have internal predecessors, (66), 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 34 [2023-12-24 22:43:15,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:15,638 INFO L225 Difference]: With dead ends: 209 [2023-12-24 22:43:15,638 INFO L226 Difference]: Without dead ends: 183 [2023-12-24 22:43:15,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=465, Invalid=2187, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 22:43:15,639 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 81 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:15,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 159 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:43:15,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-24 22:43:15,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-12-24 22:43:15,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.2362637362637363) internal successors, (225), 182 states have internal predecessors, (225), 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) [2023-12-24 22:43:15,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 225 transitions. [2023-12-24 22:43:15,674 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 225 transitions. Word has length 34 [2023-12-24 22:43:15,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:15,674 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 225 transitions. [2023-12-24 22:43:15,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 41 states have internal predecessors, (66), 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) [2023-12-24 22:43:15,674 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 225 transitions. [2023-12-24 22:43:15,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-24 22:43:15,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:15,675 INFO L195 NwaCegarLoop]: trace histogram [25, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:43:15,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 22:43:15,880 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 [2023-12-24 22:43:15,880 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:15,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:15,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2141783099, now seen corresponding path program 11 times [2023-12-24 22:43:15,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:15,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954212519] [2023-12-24 22:43:15,881 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:43:15,881 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 [2023-12-24 22:43:15,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:15,882 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) [2023-12-24 22:43:15,883 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 [2023-12-24 22:43:15,951 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-12-24 22:43:15,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:43:15,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 22:43:15,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 327 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:16,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:43:18,360 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 327 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:18,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:18,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954212519] [2023-12-24 22:43:18,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954212519] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:43:18,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:43:18,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 31] total 59 [2023-12-24 22:43:18,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713472081] [2023-12-24 22:43:18,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:43:18,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-24 22:43:18,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:18,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-24 22:43:18,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=949, Invalid=2591, Unknown=0, NotChecked=0, Total=3540 [2023-12-24 22:43:18,362 INFO L87 Difference]: Start difference. First operand 183 states and 225 transitions. Second operand has 60 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 59 states have internal predecessors, (67), 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) [2023-12-24 22:43:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:59,396 INFO L93 Difference]: Finished difference Result 499 states and 569 transitions. [2023-12-24 22:43:59,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2023-12-24 22:43:59,396 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 59 states have internal predecessors, (67), 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 34 [2023-12-24 22:43:59,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:59,397 INFO L225 Difference]: With dead ends: 499 [2023-12-24 22:43:59,397 INFO L226 Difference]: Without dead ends: 494 [2023-12-24 22:43:59,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15002 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=12266, Invalid=32044, Unknown=0, NotChecked=0, Total=44310 [2023-12-24 22:43:59,400 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 2765 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 2911 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2765 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 3334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 2911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:59,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2765 Valid, 1201 Invalid, 3334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 2911 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-24 22:43:59,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-12-24 22:43:59,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 166. [2023-12-24 22:43:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.2969696969696969) internal successors, (214), 165 states have internal predecessors, (214), 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) [2023-12-24 22:43:59,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 214 transitions. [2023-12-24 22:43:59,491 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 214 transitions. Word has length 34 [2023-12-24 22:43:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:59,491 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 214 transitions. [2023-12-24 22:43:59,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 59 states have internal predecessors, (67), 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) [2023-12-24 22:43:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 214 transitions. [2023-12-24 22:43:59,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-24 22:43:59,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:59,491 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1] [2023-12-24 22:43:59,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-24 22:43:59,694 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 [2023-12-24 22:43:59,695 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:59,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash 10967337, now seen corresponding path program 12 times [2023-12-24 22:43:59,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:59,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671943489] [2023-12-24 22:43:59,695 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:43:59,695 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 [2023-12-24 22:43:59,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:59,696 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) [2023-12-24 22:43:59,697 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 [2023-12-24 22:43:59,751 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-12-24 22:43:59,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:43:59,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 22:43:59,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:44:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 8 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:44:00,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:44:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 71 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:44:02,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:44:02,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671943489] [2023-12-24 22:44:02,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671943489] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:44:02,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:44:02,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 26] total 45 [2023-12-24 22:44:02,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722762113] [2023-12-24 22:44:02,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:44:02,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-24 22:44:02,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:44:02,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-24 22:44:02,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1785, Unknown=0, NotChecked=0, Total=2070 [2023-12-24 22:44:02,425 INFO L87 Difference]: Start difference. First operand 166 states and 214 transitions. Second operand has 46 states, 46 states have (on average 1.608695652173913) internal successors, (74), 45 states have internal predecessors, (74), 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) [2023-12-24 22:44:03,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:44:03,207 INFO L93 Difference]: Finished difference Result 194 states and 241 transitions. [2023-12-24 22:44:03,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 22:44:03,207 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.608695652173913) internal successors, (74), 45 states have internal predecessors, (74), 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 38 [2023-12-24 22:44:03,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:44:03,207 INFO L225 Difference]: With dead ends: 194 [2023-12-24 22:44:03,207 INFO L226 Difference]: Without dead ends: 165 [2023-12-24 22:44:03,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=505, Invalid=2575, Unknown=0, NotChecked=0, Total=3080 [2023-12-24 22:44:03,208 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 82 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:44:03,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 192 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:44:03,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-24 22:44:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-12-24 22:44:03,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.2926829268292683) internal successors, (212), 164 states have internal predecessors, (212), 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) [2023-12-24 22:44:03,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 212 transitions. [2023-12-24 22:44:03,299 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 212 transitions. Word has length 38 [2023-12-24 22:44:03,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:44:03,299 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 212 transitions. [2023-12-24 22:44:03,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.608695652173913) internal successors, (74), 45 states have internal predecessors, (74), 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) [2023-12-24 22:44:03,299 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 212 transitions. [2023-12-24 22:44:03,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-24 22:44:03,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:44:03,299 INFO L195 NwaCegarLoop]: trace histogram [26, 3, 2, 2, 1, 1, 1, 1, 1] [2023-12-24 22:44:03,303 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 [2023-12-24 22:44:03,502 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 [2023-12-24 22:44:03,502 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:44:03,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:44:03,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1545256535, now seen corresponding path program 13 times [2023-12-24 22:44:03,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:44:03,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520158103] [2023-12-24 22:44:03,503 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:44:03,503 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 [2023-12-24 22:44:03,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:44:03,504 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) [2023-12-24 22:44:03,507 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 [2023-12-24 22:44:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:44:03,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 22:44:03,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:44:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:44:03,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:44:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:44:05,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:44:05,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520158103] [2023-12-24 22:44:05,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520158103] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:44:05,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:44:05,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2023-12-24 22:44:05,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643933151] [2023-12-24 22:44:05,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:44:05,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-24 22:44:05,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:44:05,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-24 22:44:05,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=837, Invalid=2469, Unknown=0, NotChecked=0, Total=3306 [2023-12-24 22:44:05,208 INFO L87 Difference]: Start difference. First operand 165 states and 212 transitions. Second operand has 58 states, 58 states have (on average 1.293103448275862) internal successors, (75), 57 states have internal predecessors, (75), 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) [2023-12-24 22:49:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:49:51,416 INFO L93 Difference]: Finished difference Result 2007 states and 2105 transitions. [2023-12-24 22:49:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 813 states. [2023-12-24 22:49:51,417 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.293103448275862) internal successors, (75), 57 states have internal predecessors, (75), 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 38 [2023-12-24 22:49:51,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:49:51,422 INFO L225 Difference]: With dead ends: 2007 [2023-12-24 22:49:51,422 INFO L226 Difference]: Without dead ends: 2005 [2023-12-24 22:49:51,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 812 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317019 ImplicationChecksByTransitivity, 339.8s TimeCoverageRelationStatistics Valid=113762, Invalid=548020, Unknown=0, NotChecked=0, Total=661782 [2023-12-24 22:49:51,460 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 14356 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 2989 mSolverCounterSat, 4005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14356 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 6994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4005 IncrementalHoareTripleChecker+Valid, 2989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:49:51,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14356 Valid, 1309 Invalid, 6994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4005 Valid, 2989 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-24 22:49:51,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2023-12-24 22:49:51,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 238. [2023-12-24 22:49:51,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.2025316455696202) internal successors, (285), 237 states have internal predecessors, (285), 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) [2023-12-24 22:49:51,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 285 transitions. [2023-12-24 22:49:51,666 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 285 transitions. Word has length 38 [2023-12-24 22:49:51,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:49:51,666 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 285 transitions. [2023-12-24 22:49:51,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.293103448275862) internal successors, (75), 57 states have internal predecessors, (75), 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) [2023-12-24 22:49:51,667 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 285 transitions. [2023-12-24 22:49:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-24 22:49:51,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:49:51,667 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1] [2023-12-24 22:49:51,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 22:49:51,871 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 [2023-12-24 22:49:51,871 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:49:51,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:49:51,871 INFO L85 PathProgramCache]: Analyzing trace with hash 359008069, now seen corresponding path program 14 times [2023-12-24 22:49:51,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:49:51,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641703804] [2023-12-24 22:49:51,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:49:51,872 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 [2023-12-24 22:49:51,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:49:51,873 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) [2023-12-24 22:49:51,874 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 [2023-12-24 22:49:51,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:49:51,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:49:51,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 22:49:51,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:49:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 9 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:49:52,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:49:55,384 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:49:55,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:49:55,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641703804] [2023-12-24 22:49:55,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641703804] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:49:55,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:49:55,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 31] total 52 [2023-12-24 22:49:55,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294713051] [2023-12-24 22:49:55,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:49:55,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-24 22:49:55,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:49:55,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-24 22:49:55,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=2344, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 22:49:55,386 INFO L87 Difference]: Start difference. First operand 238 states and 285 transitions. Second operand has 53 states, 53 states have (on average 1.5471698113207548) internal successors, (82), 52 states have internal predecessors, (82), 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) [2023-12-24 22:49:56,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:49:56,710 INFO L93 Difference]: Finished difference Result 269 states and 315 transitions. [2023-12-24 22:49:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 22:49:56,710 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.5471698113207548) internal successors, (82), 52 states have internal predecessors, (82), 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 42 [2023-12-24 22:49:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:49:56,711 INFO L225 Difference]: With dead ends: 269 [2023-12-24 22:49:56,711 INFO L226 Difference]: Without dead ends: 237 [2023-12-24 22:49:56,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=720, Invalid=3440, Unknown=0, NotChecked=0, Total=4160 [2023-12-24 22:49:56,712 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 105 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 22:49:56,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 208 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 22:49:56,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-24 22:49:56,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2023-12-24 22:49:56,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.1991525423728813) internal successors, (283), 236 states have internal predecessors, (283), 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) [2023-12-24 22:49:56,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 283 transitions. [2023-12-24 22:49:56,899 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 283 transitions. Word has length 42 [2023-12-24 22:49:56,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:49:56,899 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 283 transitions. [2023-12-24 22:49:56,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.5471698113207548) internal successors, (82), 52 states have internal predecessors, (82), 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) [2023-12-24 22:49:56,899 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 283 transitions. [2023-12-24 22:49:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-24 22:49:56,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:49:56,900 INFO L195 NwaCegarLoop]: trace histogram [27, 4, 3, 3, 1, 1, 1, 1, 1] [2023-12-24 22:49:56,902 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 [2023-12-24 22:49:57,102 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 [2023-12-24 22:49:57,103 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:49:57,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:49:57,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1229369659, now seen corresponding path program 15 times [2023-12-24 22:49:57,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:49:57,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382813315] [2023-12-24 22:49:57,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:49:57,103 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:49:57,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:49:57,104 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) [2023-12-24 22:49:57,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 22:49:57,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-12-24 22:49:57,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:49:57,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-24 22:49:57,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:49:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 393 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:49:57,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:50:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 393 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:50:00,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:50:00,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382813315] [2023-12-24 22:50:00,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382813315] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:50:00,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:50:00,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 34] total 65 [2023-12-24 22:50:00,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556108518] [2023-12-24 22:50:00,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:50:00,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-24 22:50:00,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:50:00,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-24 22:50:00,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1139, Invalid=3151, Unknown=0, NotChecked=0, Total=4290 [2023-12-24 22:50:00,185 INFO L87 Difference]: Start difference. First operand 237 states and 283 transitions. Second operand has 66 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 65 states have internal predecessors, (83), 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) [2023-12-24 22:50:54,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:50:54,998 INFO L93 Difference]: Finished difference Result 584 states and 660 transitions. [2023-12-24 22:50:54,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2023-12-24 22:50:54,998 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 65 states have internal predecessors, (83), 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 42 [2023-12-24 22:50:54,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:50:55,000 INFO L225 Difference]: With dead ends: 584 [2023-12-24 22:50:55,000 INFO L226 Difference]: Without dead ends: 579 [2023-12-24 22:50:55,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19443 ImplicationChecksByTransitivity, 54.6s TimeCoverageRelationStatistics Valid=14876, Invalid=42006, Unknown=0, NotChecked=0, Total=56882 [2023-12-24 22:50:55,002 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 3272 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 3224 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3272 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 3685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 3224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:50:55,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3272 Valid, 1299 Invalid, 3685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 3224 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-24 22:50:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2023-12-24 22:50:55,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 197. [2023-12-24 22:50:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.2857142857142858) internal successors, (252), 196 states have internal predecessors, (252), 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) [2023-12-24 22:50:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 252 transitions. [2023-12-24 22:50:55,224 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 252 transitions. Word has length 42 [2023-12-24 22:50:55,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:50:55,232 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 252 transitions. [2023-12-24 22:50:55,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 65 states have internal predecessors, (83), 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) [2023-12-24 22:50:55,233 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 252 transitions. [2023-12-24 22:50:55,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-24 22:50:55,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:50:55,233 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2023-12-24 22:50:55,239 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 (21)] Ended with exit code 0 [2023-12-24 22:50:55,433 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 [2023-12-24 22:50:55,434 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:50:55,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:50:55,434 INFO L85 PathProgramCache]: Analyzing trace with hash -632856279, now seen corresponding path program 16 times [2023-12-24 22:50:55,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:50:55,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266360227] [2023-12-24 22:50:55,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:50:55,434 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 [2023-12-24 22:50:55,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:50:55,435 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) [2023-12-24 22:50:55,436 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 [2023-12-24 22:50:55,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:50:55,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:50:55,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 22:50:55,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:50:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 10 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:50:55,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:50:59,683 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 145 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:50:59,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:50:59,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266360227] [2023-12-24 22:50:59,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266360227] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:50:59,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:50:59,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 33] total 56 [2023-12-24 22:50:59,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141932706] [2023-12-24 22:50:59,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:50:59,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-24 22:50:59,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:50:59,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-24 22:50:59,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=2740, Unknown=0, NotChecked=0, Total=3192 [2023-12-24 22:50:59,685 INFO L87 Difference]: Start difference. First operand 197 states and 252 transitions. Second operand has 57 states, 57 states have (on average 1.5789473684210527) internal successors, (90), 56 states have internal predecessors, (90), 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) [2023-12-24 22:51:01,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:51:01,364 INFO L93 Difference]: Finished difference Result 231 states and 285 transitions. [2023-12-24 22:51:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-24 22:51:01,365 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.5789473684210527) internal successors, (90), 56 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-24 22:51:01,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:51:01,365 INFO L225 Difference]: With dead ends: 231 [2023-12-24 22:51:01,365 INFO L226 Difference]: Without dead ends: 196 [2023-12-24 22:51:01,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=801, Invalid=4029, Unknown=0, NotChecked=0, Total=4830 [2023-12-24 22:51:01,366 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 121 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:51:01,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 223 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 22:51:01,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-24 22:51:01,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-12-24 22:51:01,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.2820512820512822) internal successors, (250), 195 states have internal predecessors, (250), 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) [2023-12-24 22:51:01,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 250 transitions. [2023-12-24 22:51:01,595 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 250 transitions. Word has length 46 [2023-12-24 22:51:01,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:51:01,595 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 250 transitions. [2023-12-24 22:51:01,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.5789473684210527) internal successors, (90), 56 states have internal predecessors, (90), 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) [2023-12-24 22:51:01,595 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 250 transitions. [2023-12-24 22:51:01,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-24 22:51:01,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:51:01,595 INFO L195 NwaCegarLoop]: trace histogram [28, 5, 4, 4, 1, 1, 1, 1, 1] [2023-12-24 22:51:01,600 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 [2023-12-24 22:51:01,796 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 [2023-12-24 22:51:01,796 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:51:01,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:51:01,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1955916201, now seen corresponding path program 17 times [2023-12-24 22:51:01,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:51:01,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068695742] [2023-12-24 22:51:01,797 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:51:01,797 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 [2023-12-24 22:51:01,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:51:01,797 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) [2023-12-24 22:51:01,800 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 [2023-12-24 22:51:01,887 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-12-24 22:51:01,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:51:01,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 22:51:01,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:51:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:02,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:51:04,836 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:04,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:51:04,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068695742] [2023-12-24 22:51:04,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068695742] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:51:04,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:51:04,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 34] total 65 [2023-12-24 22:51:04,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260084697] [2023-12-24 22:51:04,837 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:51:04,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-24 22:51:04,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:51:04,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-24 22:51:04,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1135, Invalid=3155, Unknown=0, NotChecked=0, Total=4290 [2023-12-24 22:51:04,838 INFO L87 Difference]: Start difference. First operand 196 states and 250 transitions. Second operand has 66 states, 66 states have (on average 1.378787878787879) internal successors, (91), 65 states have internal predecessors, (91), 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) [2023-12-24 22:52:02,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:52:02,562 INFO L93 Difference]: Finished difference Result 545 states and 623 transitions. [2023-12-24 22:52:02,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2023-12-24 22:52:02,563 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.378787878787879) internal successors, (91), 65 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-24 22:52:02,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:52:02,564 INFO L225 Difference]: With dead ends: 545 [2023-12-24 22:52:02,564 INFO L226 Difference]: Without dead ends: 540 [2023-12-24 22:52:02,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21954 ImplicationChecksByTransitivity, 57.3s TimeCoverageRelationStatistics Valid=16250, Invalid=46500, Unknown=0, NotChecked=0, Total=62750 [2023-12-24 22:52:02,567 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 3325 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 3275 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3325 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 3729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 3275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:52:02,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3325 Valid, 1292 Invalid, 3729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 3275 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 22:52:02,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2023-12-24 22:52:02,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 217. [2023-12-24 22:52:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.2824074074074074) internal successors, (277), 216 states have internal predecessors, (277), 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) [2023-12-24 22:52:02,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 277 transitions. [2023-12-24 22:52:02,887 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 277 transitions. Word has length 46 [2023-12-24 22:52:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:52:02,887 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 277 transitions. [2023-12-24 22:52:02,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.378787878787879) internal successors, (91), 65 states have internal predecessors, (91), 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) [2023-12-24 22:52:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 277 transitions. [2023-12-24 22:52:02,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-24 22:52:02,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:52:02,888 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1] [2023-12-24 22:52:02,891 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 [2023-12-24 22:52:03,088 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 [2023-12-24 22:52:03,088 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:52:03,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:52:03,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1125800517, now seen corresponding path program 18 times [2023-12-24 22:52:03,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:52:03,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67674691] [2023-12-24 22:52:03,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:52:03,089 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 [2023-12-24 22:52:03,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:52:03,090 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) [2023-12-24 22:52:03,091 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 [2023-12-24 22:52:03,165 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2023-12-24 22:52:03,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:52:03,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 22:52:03,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:52:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 11 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:52:03,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:52:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:52:07,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:52:07,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67674691] [2023-12-24 22:52:07,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67674691] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:52:07,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:52:07,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 37] total 62 [2023-12-24 22:52:07,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534971111] [2023-12-24 22:52:07,750 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:52:07,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-24 22:52:07,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:52:07,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-24 22:52:07,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=3340, Unknown=0, NotChecked=0, Total=3906 [2023-12-24 22:52:07,751 INFO L87 Difference]: Start difference. First operand 217 states and 277 transitions. Second operand has 63 states, 63 states have (on average 1.5555555555555556) internal successors, (98), 62 states have internal predecessors, (98), 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) [2023-12-24 22:52:09,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:52:09,644 INFO L93 Difference]: Finished difference Result 254 states and 313 transitions. [2023-12-24 22:52:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 22:52:09,644 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.5555555555555556) internal successors, (98), 62 states have internal predecessors, (98), 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 50 [2023-12-24 22:52:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:52:09,645 INFO L225 Difference]: With dead ends: 254 [2023-12-24 22:52:09,645 INFO L226 Difference]: Without dead ends: 216 [2023-12-24 22:52:09,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=982, Invalid=4870, Unknown=0, NotChecked=0, Total=5852 [2023-12-24 22:52:09,645 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 187 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:52:09,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 246 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 22:52:09,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-12-24 22:52:09,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-12-24 22:52:09,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.2790697674418605) internal successors, (275), 215 states have internal predecessors, (275), 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) [2023-12-24 22:52:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 275 transitions. [2023-12-24 22:52:09,959 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 275 transitions. Word has length 50 [2023-12-24 22:52:09,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:52:09,960 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 275 transitions. [2023-12-24 22:52:09,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.5555555555555556) internal successors, (98), 62 states have internal predecessors, (98), 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) [2023-12-24 22:52:09,960 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 275 transitions. [2023-12-24 22:52:09,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-24 22:52:09,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:52:09,960 INFO L195 NwaCegarLoop]: trace histogram [29, 6, 5, 5, 1, 1, 1, 1, 1] [2023-12-24 22:52:09,966 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 [2023-12-24 22:52:10,163 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 [2023-12-24 22:52:10,164 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:52:10,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:52:10,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1480982075, now seen corresponding path program 19 times [2023-12-24 22:52:10,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:52:10,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453755809] [2023-12-24 22:52:10,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:52:10,164 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 [2023-12-24 22:52:10,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:52:10,165 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) [2023-12-24 22:52:10,166 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 [2023-12-24 22:52:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:52:10,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 22:52:10,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:52:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:52:10,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:52:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:52:12,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:52:12,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453755809] [2023-12-24 22:52:12,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453755809] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:52:12,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:52:12,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2023-12-24 22:52:12,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672239301] [2023-12-24 22:52:12,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:52:12,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-24 22:52:12,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:52:12,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-24 22:52:12,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1005, Invalid=3027, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 22:52:12,272 INFO L87 Difference]: Start difference. First operand 216 states and 275 transitions. Second operand has 64 states, 64 states have (on average 1.546875) internal successors, (99), 63 states have internal predecessors, (99), 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) Received shutdown request... [2023-12-24 22:53:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2023-12-24 22:53:31,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13777 ImplicationChecksByTransitivity, 77.3s TimeCoverageRelationStatistics Valid=12297, Invalid=33285, Unknown=0, NotChecked=0, Total=45582 [2023-12-24 22:53:31,362 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 4167 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 1253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4167 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 4516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1253 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:53:31,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4167 Valid, 1169 Invalid, 4516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1253 Valid, 3263 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 22:53:31,363 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 22:53:31,363 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 22:53:31,363 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 22:53:31,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-12-24 22:53:31,564 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 [2023-12-24 22:53:31,564 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (216states) and FLOYD_HOARE automaton (currently 182 states, 64 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 214 known predicates. [2023-12-24 22:53:31,568 INFO L445 BasicCegarLoop]: Path program histogram: [19, 4, 1] [2023-12-24 22:53:31,569 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 22:53:31,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 10:53:31 BoogieIcfgContainer [2023-12-24 22:53:31,570 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 22:53:31,571 INFO L158 Benchmark]: Toolchain (without parser) took 865687.03ms. Allocated memory was 231.7MB in the beginning and 551.6MB in the end (delta: 319.8MB). Free memory was 169.9MB in the beginning and 267.4MB in the end (delta: -97.5MB). Peak memory consumption was 223.3MB. Max. memory is 8.0GB. [2023-12-24 22:53:31,571 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 231.7MB. Free memory is still 182.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 22:53:31,571 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.80ms. Allocated memory is still 231.7MB. Free memory was 169.8MB in the beginning and 158.5MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-24 22:53:31,571 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.16ms. Allocated memory is still 231.7MB. Free memory was 158.3MB in the beginning and 157.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 22:53:31,571 INFO L158 Benchmark]: Boogie Preprocessor took 22.05ms. Allocated memory is still 231.7MB. Free memory was 156.8MB in the beginning and 155.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 22:53:31,571 INFO L158 Benchmark]: RCFGBuilder took 297.13ms. Allocated memory was 231.7MB in the beginning and 318.8MB in the end (delta: 87.0MB). Free memory was 155.1MB in the beginning and 279.5MB in the end (delta: -124.3MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. [2023-12-24 22:53:31,572 INFO L158 Benchmark]: TraceAbstraction took 865114.14ms. Allocated memory was 318.8MB in the beginning and 551.6MB in the end (delta: 232.8MB). Free memory was 278.9MB in the beginning and 267.4MB in the end (delta: 11.5MB). Peak memory consumption was 243.8MB. Max. memory is 8.0GB. [2023-12-24 22:53:31,572 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 231.7MB. Free memory is still 182.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 226.80ms. Allocated memory is still 231.7MB. Free memory was 169.8MB in the beginning and 158.5MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.16ms. Allocated memory is still 231.7MB. Free memory was 158.3MB in the beginning and 157.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.05ms. Allocated memory is still 231.7MB. Free memory was 156.8MB in the beginning and 155.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 297.13ms. Allocated memory was 231.7MB in the beginning and 318.8MB in the end (delta: 87.0MB). Free memory was 155.1MB in the beginning and 279.5MB in the end (delta: -124.3MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. * TraceAbstraction took 865114.14ms. Allocated memory was 318.8MB in the beginning and 551.6MB in the end (delta: 232.8MB). Free memory was 278.9MB in the beginning and 267.4MB in the end (delta: 11.5MB). Peak memory consumption was 243.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (216states) and FLOYD_HOARE automaton (currently 182 states, 64 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 214 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 865.1s, OverallIterations: 24, TraceHistogramMax: 29, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 818.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43965 SdHoareTripleChecker+Valid, 23.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43965 mSDsluCounter, 9974 SdHoareTripleChecker+Invalid, 21.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9574 mSDsCounter, 10672 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24215 IncrementalHoareTripleChecker+Invalid, 34887 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10672 mSolverCounterUnsat, 400 mSDtfsCounter, 24215 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3859 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 3433 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622753 ImplicationChecksByTransitivity, 819.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=238occurred in iteration=18, InterpolantAutomatonStates: 2853, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 23 MinimizatonAttempts, 5446 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 38.4s InterpolantComputationTime, 672 NumberOfCodeBlocks, 672 NumberOfCodeBlocksAsserted, 112 NumberOfCheckSat, 1291 ConstructedInterpolants, 11 QuantifiedInterpolants, 10574 SizeOfPredicates, 83 NumberOfNonLiveVariables, 1779 ConjunctsInSsa, 548 ConjunctsInUnsatCore, 47 InterpolantComputations, 1 PerfectInterpolantSequences, 798/7176 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown